diff --git a/controllers/login_handler.go b/controllers/login_handler.go
index 1508003..05a066f 100644
--- a/controllers/login_handler.go
+++ b/controllers/login_handler.go
@@ -26,12 +26,12 @@ func NewLoginHandler(r gin.IRouter, us entities.LoginUseCase, secretKey []byte)
 }
 
 func (l *LoginHandler) Login(c *gin.Context) {
-	// username and password are in the json body
+	// username is in the json body
 	var u entities.LoginPayload
 	if err := c.ShouldBindJSON(&u); err != nil {
 		// Use type assertion to check if err is of type validator.ValidationErrors
 		if _, ok := err.(validator.ValidationErrors); ok {
-			c.JSON(http.StatusBadRequest, gin.H{"error": "Username or password must be a non-empty string!"})
+			c.JSON(http.StatusBadRequest, gin.H{"error": "Username must be a non-empty string!"})
 			return // exit on first error
 		} else {
 			// Handle other types of errors (e.g., JSON binding errors)
diff --git a/controllers/prescription_handler.go b/controllers/prescription_handler.go
index 68f8c40..671ae20 100644
--- a/controllers/prescription_handler.go
+++ b/controllers/prescription_handler.go
@@ -9,6 +9,7 @@ import (
 
 	"sothea-backend/controllers/middleware"
 	"sothea-backend/entities"
+	"sothea-backend/repository/postgres"
 	db "sothea-backend/repository/sqlc"
 )
 
@@ -187,6 +188,16 @@ func (h *PrescriptionHandler) AddLine(c *gin.Context) {
 	ctx := c.Request.Context()
 	created, err := h.Usecase.AddLine(ctx, &line)
 	if err != nil {
+		if stockErr, ok := err.(*postgres.InsufficientStockError); ok {
+			c.JSON(http.StatusBadRequest, gin.H{
+				"error":           stockErr.Error(),
+				"code":            stockErr.Code(),
+				"drug_id":         stockErr.DrugID,
+				"total_required":  stockErr.TotalRequired,
+				"total_available": stockErr.TotalAvailable,
+			})
+			return
+		}
 		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 		return
 	}
@@ -224,6 +235,16 @@ func (h *PrescriptionHandler) UpdateLine(c *gin.Context) {
 	ctx := c.Request.Context()
 	updated, err := h.Usecase.UpdateLine(ctx, &line)
 	if err != nil {
+		if stockErr, ok := err.(*postgres.InsufficientStockError); ok {
+			c.JSON(http.StatusBadRequest, gin.H{
+				"error":           stockErr.Error(),
+				"code":            stockErr.Code(),
+				"drug_id":         stockErr.DrugID,
+				"total_required":  stockErr.TotalRequired,
+				"total_available": stockErr.TotalAvailable,
+			})
+			return
+		}
 		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 		return
 	}
@@ -286,6 +307,16 @@ func (h *PrescriptionHandler) SetLineAllocations(c *gin.Context) {
 	ctx := c.Request.Context()
 	out, err := h.Usecase.SetLineAllocations(ctx, lineID, allocs)
 	if err != nil {
+		if stockErr, ok := err.(*postgres.InsufficientStockError); ok {
+			c.JSON(http.StatusBadRequest, gin.H{
+				"error":           stockErr.Error(),
+				"code":            stockErr.Code(),
+				"drug_id":         stockErr.DrugID,
+				"total_required":  stockErr.TotalRequired,
+				"total_available": stockErr.TotalAvailable,
+			})
+			return
+		}
 		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 		return
 	}
diff --git a/db/queries/prescriptions.sql b/db/queries/prescriptions.sql
index f035fe3..4d000ba 100644
--- a/db/queries/prescriptions.sql
+++ b/db/queries/prescriptions.sql
@@ -7,12 +7,14 @@ RETURNING id, created_at, updated_at;
 
 -- name: GetPrescriptionHeader :one
 SELECT p.id, p.patient_id, p.vid, p.notes,
-       p.created_by, p.created_at, p.updated_at,
+       p.created_by, p.created_at, p.updated_at, p.updated_by,
        p.is_dispensed, p.dispensed_by, p.dispensed_at,
        uc.name AS creator_name,
+       uu.name AS updater_name,
        ud.name AS dispenser_name
 FROM prescriptions p
 LEFT JOIN users uc ON uc.id = p.created_by
+LEFT JOIN users uu ON uu.id = p.updated_by
 LEFT JOIN users ud ON ud.id = p.dispensed_by
 WHERE p.id = $1;
 
@@ -23,8 +25,9 @@ SELECT
   pl.frequency_code,
   pl.duration, pl.duration_unit,
   pl.total_to_dispense, pl.is_packed, pl.packed_by, pl.packed_at,
-  u1.name AS packer_name,
-  u2.name AS updater_name,
+  u_packer.name AS packer_name,
+  u_updater.name AS updater_name,
+  u_creator.name AS creator_name,
   d.generic_name AS drug_name,
   d.route_code AS route_code,
   d.dispense_unit AS dispense_unit,
@@ -36,8 +39,9 @@ SELECT
   END AS display_strength
 FROM prescription_lines pl
 LEFT JOIN drugs d ON d.id = pl.drug_id
-LEFT JOIN users u1 ON u1.id = pl.packed_by
-LEFT JOIN users u2 ON u2.id = pl.updated_by
+LEFT JOIN users u_packer ON u_packer.id = pl.packed_by
+LEFT JOIN users u_updater ON u_updater.id = pl.updated_by
+LEFT JOIN users u_creator ON u_creator.id = pl.created_by
 WHERE pl.prescription_id = $1
 ORDER BY pl.id;
 
diff --git a/db/queries/users.sql b/db/queries/users.sql
index 710f3eb..dcbc382 100644
--- a/db/queries/users.sql
+++ b/db/queries/users.sql
@@ -1,9 +1,9 @@
 -- name: GetUserByUsername :one
-SELECT id, username, password_hash
+SELECT id, username
 FROM users
 WHERE username = $1;
 
 -- name: GetUserByID :one
-SELECT id, username, password_hash
+SELECT id, username
 FROM users
 WHERE id = $1;
diff --git a/db/schema/patients.sql b/db/schema/patients.sql
index 88ca397..f878333 100644
--- a/db/schema/patients.sql
+++ b/db/schema/patients.sql
@@ -8,7 +8,12 @@ CREATE TABLE patient_details
   gender         VARCHAR(1) NOT NULL,
   village        TEXT       NOT NULL,
   contact_no     TEXT       NOT NULL,
-  drug_allergies TEXT
+  drug_allergies TEXT,
+
+  created_at          TIMESTAMPTZ NOT NULL DEFAULT now(),
+  created_by          BIGINT REFERENCES users(id),
+  updated_at          TIMESTAMPTZ,
+  updated_by          BIGINT REFERENCES users(id)
 );
 
 CREATE TABLE admin
@@ -20,6 +25,12 @@ CREATE TABLE admin
   pregnant              BOOLEAN NOT NULL,
   last_menstrual_period DATE,
   sent_to_id            BOOLEAN NOT NULL,
+
+  created_at          TIMESTAMPTZ NOT NULL DEFAULT now(),
+  created_by          BIGINT REFERENCES users(id),
+  updated_at          TIMESTAMPTZ,
+  updated_by          BIGINT REFERENCES users(id),
+
   PRIMARY KEY (id, vid) -- Composite primary key
 );
 
@@ -43,6 +54,12 @@ CREATE TABLE past_medical_history
     sexually_transmitted_disease BOOLEAN,                               -- Allow NULL for 'Nil' option
     specified_stds               TEXT,
     others                       TEXT,
+
+    created_at          TIMESTAMPTZ NOT NULL DEFAULT now(),
+    created_by          BIGINT REFERENCES users(id),
+    updated_at          TIMESTAMPTZ,
+    updated_by          BIGINT REFERENCES users(id),
+
     PRIMARY KEY (id, vid),                                               -- Composite primary key
     CONSTRAINT fk_admin FOREIGN KEY (id, vid) REFERENCES admin (id, vid) ON DELETE CASCADE -- Foreign key referencing the composite key in admin
 );
@@ -57,6 +74,12 @@ CREATE TABLE social_history
     cigarettes_per_day      INTEGER,
     alcohol_history         BOOLEAN NOT NULL,
     how_regular             VARCHAR(1),
+
+    created_at          TIMESTAMPTZ NOT NULL DEFAULT now(),
+    created_by          BIGINT REFERENCES users(id),
+    updated_at          TIMESTAMPTZ,
+    updated_by          BIGINT REFERENCES users(id),
+
     PRIMARY KEY (id, vid),                                               -- Composite primary key
     CONSTRAINT fk_admin FOREIGN KEY (id, vid) REFERENCES admin (id, vid) ON DELETE CASCADE -- Foreign key referencing the composite key in admin
 );
@@ -78,6 +101,12 @@ CREATE TABLE vital_statistics
     avg_hr                    NUMERIC(5, 1) NOT NULL,
     rand_blood_glucose_mmol_l  NUMERIC(5, 1),
     icope_high_bp             BOOLEAN,
+
+    created_at          TIMESTAMPTZ NOT NULL DEFAULT now(),
+    created_by          BIGINT REFERENCES users(id),
+    updated_at          TIMESTAMPTZ,
+    updated_by          BIGINT REFERENCES users(id),
+
     PRIMARY KEY (id, vid),                                               -- Composite primary key
     CONSTRAINT fk_admin FOREIGN KEY (id, vid) REFERENCES admin (id, vid) ON DELETE CASCADE -- Foreign key referencing the composite key in admin
 );
@@ -95,6 +124,12 @@ CREATE TABLE height_and_weight
 
     icope_lost_weight_past_months BOOLEAN,
     icope_no_desire_to_eat BOOLEAN,
+
+    created_at          TIMESTAMPTZ NOT NULL DEFAULT now(),
+    created_by          BIGINT REFERENCES users(id),
+    updated_at          TIMESTAMPTZ,
+    updated_by          BIGINT REFERENCES users(id),
+
     PRIMARY KEY (id, vid),                                               -- Composite primary key
     CONSTRAINT fk_admin FOREIGN KEY (id, vid) REFERENCES admin (id, vid) ON DELETE CASCADE -- Foreign key referencing the composite key in admin
 );
@@ -112,6 +147,11 @@ CREATE TABLE visual_acuity
     icope_eye_problem BOOLEAN,
     icope_treated_for_diabetes_or_bp BOOLEAN,
 
+    created_at          TIMESTAMPTZ NOT NULL DEFAULT now(),
+    created_by          BIGINT REFERENCES users(id),
+    updated_at          TIMESTAMPTZ,
+    updated_by          BIGINT REFERENCES users(id),
+
     PRIMARY KEY (id, vid),                                               -- Composite primary key
     CONSTRAINT fk_admin FOREIGN KEY (id, vid) REFERENCES admin (id, vid) ON DELETE CASCADE -- Foreign key referencing the composite key in admin
 );
@@ -130,6 +170,11 @@ CREATE TABLE dental
     icope_pain_in_mouth  BOOLEAN,
     dental_notes         TEXT,
 
+    created_at          TIMESTAMPTZ NOT NULL DEFAULT now(),
+    created_by          BIGINT REFERENCES users(id),
+    updated_at          TIMESTAMPTZ,
+    updated_by          BIGINT REFERENCES users(id),
+
     PRIMARY KEY (id, vid),                                               -- Composite primary key
     CONSTRAINT fk_admin FOREIGN KEY (id, vid) REFERENCES admin (id, vid) ON DELETE CASCADE -- Foreign key referencing the composite key in admin
 );
@@ -146,6 +191,11 @@ CREATE TABLE fall_risk
     fall_risk_score INTEGER NOT NULL,
     icope_complete_chair_stands BOOLEAN,
     icope_chair_stands_time BOOLEAN,
+
+    created_at          TIMESTAMPTZ NOT NULL DEFAULT now(),
+    created_by          BIGINT REFERENCES users(id),
+    updated_at          TIMESTAMPTZ,
+    updated_by          BIGINT REFERENCES users(id),
                           
     PRIMARY KEY (id, vid),                                               -- Composite primary key
     CONSTRAINT fk_admin FOREIGN KEY (id, vid) REFERENCES admin (id, vid) ON DELETE CASCADE -- Foreign key referencing the composite key in admin
@@ -170,6 +220,12 @@ CREATE TABLE doctors_consultation
     referral_needed    BOOLEAN NOT NULL,
     referral_loc       TEXT,
     remarks            TEXT,
+
+    created_at          TIMESTAMPTZ NOT NULL DEFAULT now(),
+    created_by          BIGINT REFERENCES users(id),
+    updated_at          TIMESTAMPTZ,
+    updated_by          BIGINT REFERENCES users(id),
+
     PRIMARY KEY (id, vid),                                               -- Composite primary key
     CONSTRAINT fk_admin FOREIGN KEY (id, vid) REFERENCES admin (id, vid) -- Foreign key referencing the composite key in admin
 );
@@ -183,6 +239,12 @@ CREATE TABLE physiotherapy
     objective_assessment       TEXT,                                     -- Objective Assessment (Open Ended)
     intervention               TEXT,                                     -- Intervention (Open Ended)
     evaluation                 TEXT,                                     -- Evaluation (Open Ended)
+
+    created_at          TIMESTAMPTZ NOT NULL DEFAULT now(),
+    created_by          BIGINT REFERENCES users(id),
+    updated_at          TIMESTAMPTZ,
+    updated_by          BIGINT REFERENCES users(id),
+
     PRIMARY KEY (id, vid),                                               -- Composite primary key
     CONSTRAINT fk_admin FOREIGN KEY (id, vid) REFERENCES admin (id, vid) -- Foreign key referencing the composite key in admin
-);
\ No newline at end of file
+);
diff --git a/db/schema/users.sql b/db/schema/users.sql
index 9c489a9..67b981e 100644
--- a/db/schema/users.sql
+++ b/db/schema/users.sql
@@ -1,11 +1,10 @@
 /*******************
-    Add usernames and passwords
+    Add usernames
  */
 CREATE TABLE users (
   id            BIGSERIAL PRIMARY KEY,
   username      TEXT NOT NULL UNIQUE,
   name          TEXT,
-  password_hash TEXT NOT NULL,
   created_at    TIMESTAMPTZ NOT NULL DEFAULT now(),
   updated_at    TIMESTAMPTZ NOT NULL DEFAULT now()
 );
diff --git a/entities/models.go b/entities/models.go
index cb3b672..c38f98b 100644
--- a/entities/models.go
+++ b/entities/models.go
@@ -77,11 +77,15 @@ type DrugStock struct {
 
 type Prescription struct {
 	db.Prescription
-	Lines []PrescriptionLine `json:"lines"`
+	DispenserName *string            `json:"dispenser_name"`
+	Lines         []PrescriptionLine `json:"lines"`
 }
 
 type PrescriptionLine struct {
 	db.PrescriptionLine
+	PackerName   *string                    `json:"packer_name"`
+	UpdaterName  *string                    `json:"updater_name"`
+	CreatorName  *string                    `json:"creator_name"`
 	Allocations  []db.PrescriptionBatchItem `json:"allocations"`
 	DispenseUnit string                     `json:"dispense_unit,omitempty"`
 }
@@ -106,7 +110,6 @@ type SetAllocReq struct {
 
 type LoginPayload struct {
 	Username string `json:"username" binding:"required"`
-	Password string `json:"password" binding:"required"`
 }
 
 // ---------------- Interfaces ----------------
diff --git a/repository/postgres/postgres_patient.go b/repository/postgres/postgres_patient.go
index ab70078..5f108a0 100644
--- a/repository/postgres/postgres_patient.go
+++ b/repository/postgres/postgres_patient.go
@@ -472,9 +472,8 @@ func (p *postgresPatientRepository) GetDBUser(ctx context.Context, username stri
 		return nil, err
 	}
 	return &db.User{
-		ID:           row.ID,
-		Username:     row.Username,
-		PasswordHash: row.PasswordHash,
+		ID:       row.ID,
+		Username: row.Username,
 	}, nil
 }
 
diff --git a/repository/postgres/postgres_prescription_errors.go b/repository/postgres/postgres_prescription_errors.go
index 0882c86..ccfadfe 100644
--- a/repository/postgres/postgres_prescription_errors.go
+++ b/repository/postgres/postgres_prescription_errors.go
@@ -5,11 +5,11 @@ import (
 	"errors"
 	"fmt"
 
-	"github.com/lib/pq"
+	"github.com/jackc/pgx/v5/pgconn"
 )
 
 type InsufficientStockError struct {
-	PresentationID int64 `json:"presentation+id"`
+	DrugID         int64 `json:"drug_id"`
 	TotalRequired  int64 `json:"total_required"`
 	TotalAvailable int64 `json:"total_available"`
 }
@@ -20,14 +20,17 @@ func (e *InsufficientStockError) Error() string {
 func (e *InsufficientStockError) Code() string { return "INSUFFICIENT_STOCK" }
 
 func mapPrescriptionSQLError(err error) error {
-	var pe *pq.Error
+	var pe *pgconn.PgError
 	if !errors.As(err, &pe) {
 		return err
 	}
 	// 23514 = check_violation; you raised with CONSTRAINT 'ck_insufficient_stock'
-	if string(pe.Code) == "23514" && pe.Constraint == "ck_insufficient_stock" {
+	if pe.Code == "23514" && pe.ConstraintName == "ck_insufficient_stock" {
 		var d InsufficientStockError
-		_ = json.Unmarshal([]byte(pe.Detail), &d)
+		if err := json.Unmarshal([]byte(pe.Detail), &d); err != nil {
+			// If unmarshaling fails, return the original error with detail
+			return fmt.Errorf("insufficient stock: %s", pe.Detail)
+		}
 		return &d
 	}
 	return err
diff --git a/repository/postgres/postgres_prescriptions.go b/repository/postgres/postgres_prescriptions.go
index 6c16833..e0dd4c8 100644
--- a/repository/postgres/postgres_prescriptions.go
+++ b/repository/postgres/postgres_prescriptions.go
@@ -105,6 +105,7 @@ func (r *postgresPrescriptionRepository) GetPrescriptionByID(ctx context.Context
 			DispensedBy: header.DispensedBy,
 			DispensedAt: header.DispensedAt,
 		},
+		DispenserName: header.DispenserName,
 	}
 
 	lineRows, err := q.ListPrescriptionLines(ctx, id)
@@ -131,6 +132,9 @@ func (r *postgresPrescriptionRepository) GetPrescriptionByID(ctx context.Context
 				PackedBy:        row.PackedBy,
 				PackedAt:        row.PackedAt,
 			},
+			PackerName:  row.PackerName,
+			UpdaterName: row.UpdaterName,
+			CreatorName: row.CreatorName,
 		}
 		lines = append(lines, l)
 		lineIDs = append(lineIDs, row.ID)
diff --git a/repository/sqlc/db.go b/repository/sqlc/db.go
index b4a3b78..9d485b5 100644
--- a/repository/sqlc/db.go
+++ b/repository/sqlc/db.go
@@ -1,6 +1,6 @@
 // Code generated by sqlc. DO NOT EDIT.
 // versions:
-//   sqlc v1.27.0
+//   sqlc v1.30.0
 
 package db
 
diff --git a/repository/sqlc/models.go b/repository/sqlc/models.go
index 63dec70..837f140 100644
--- a/repository/sqlc/models.go
+++ b/repository/sqlc/models.go
@@ -1,6 +1,6 @@
 // Code generated by sqlc. DO NOT EDIT.
 // versions:
-//   sqlc v1.27.0
+//   sqlc v1.30.0
 
 package db
 
@@ -268,12 +268,11 @@ type Unit struct {
 }
 
 type User struct {
-	ID           int64     `json:"id"`
-	Username     string    `json:"username"`
-	Name         *string   `json:"name"`
-	PasswordHash string    `json:"password_hash"`
-	CreatedAt    time.Time `json:"created_at"`
-	UpdatedAt    time.Time `json:"updated_at"`
+	ID        int64     `json:"id"`
+	Username  string    `json:"username"`
+	Name      *string   `json:"name"`
+	CreatedAt time.Time `json:"created_at"`
+	UpdatedAt time.Time `json:"updated_at"`
 }
 
 type VisualAcuity struct {
diff --git a/repository/sqlc/patient.sql.go b/repository/sqlc/patient.sql.go
index 3dc2778..b4fab9b 100644
--- a/repository/sqlc/patient.sql.go
+++ b/repository/sqlc/patient.sql.go
@@ -1,6 +1,6 @@
 // Code generated by sqlc. DO NOT EDIT.
 // versions:
-//   sqlc v1.27.0
+//   sqlc v1.30.0
 // source: patient.sql
 
 package db
diff --git a/repository/sqlc/pharmacy.sql.go b/repository/sqlc/pharmacy.sql.go
index fbb7a85..e49f985 100644
--- a/repository/sqlc/pharmacy.sql.go
+++ b/repository/sqlc/pharmacy.sql.go
@@ -1,6 +1,6 @@
 // Code generated by sqlc. DO NOT EDIT.
 // versions:
-//   sqlc v1.27.0
+//   sqlc v1.30.0
 // source: pharmacy.sql
 
 package db
diff --git a/repository/sqlc/prescriptions.sql.go b/repository/sqlc/prescriptions.sql.go
index c75a131..b0ef2d5 100644
--- a/repository/sqlc/prescriptions.sql.go
+++ b/repository/sqlc/prescriptions.sql.go
@@ -1,6 +1,6 @@
 // Code generated by sqlc. DO NOT EDIT.
 // versions:
-//   sqlc v1.27.0
+//   sqlc v1.30.0
 // source: prescriptions.sql
 
 package db
@@ -196,12 +196,14 @@ func (q *Queries) GetPrescriptionDispensed(ctx context.Context, id int64) (bool,
 
 const getPrescriptionHeader = `-- name: GetPrescriptionHeader :one
 SELECT p.id, p.patient_id, p.vid, p.notes,
-       p.created_by, p.created_at, p.updated_at,
+       p.created_by, p.created_at, p.updated_at, p.updated_by,
        p.is_dispensed, p.dispensed_by, p.dispensed_at,
        uc.name AS creator_name,
+       uu.name AS updater_name,
        ud.name AS dispenser_name
 FROM prescriptions p
 LEFT JOIN users uc ON uc.id = p.created_by
+LEFT JOIN users uu ON uu.id = p.updated_by
 LEFT JOIN users ud ON ud.id = p.dispensed_by
 WHERE p.id = $1
 `
@@ -214,10 +216,12 @@ type GetPrescriptionHeaderRow struct {
 	CreatedBy     *int64     `json:"created_by"`
 	CreatedAt     time.Time  `json:"created_at"`
 	UpdatedAt     *time.Time `json:"updated_at"`
+	UpdatedBy     *int64     `json:"updated_by"`
 	IsDispensed   bool       `json:"is_dispensed"`
 	DispensedBy   *int64     `json:"dispensed_by"`
 	DispensedAt   *time.Time `json:"dispensed_at"`
 	CreatorName   *string    `json:"creator_name"`
+	UpdaterName   *string    `json:"updater_name"`
 	DispenserName *string    `json:"dispenser_name"`
 }
 
@@ -232,10 +236,12 @@ func (q *Queries) GetPrescriptionHeader(ctx context.Context, id int64) (GetPresc
 		&i.CreatedBy,
 		&i.CreatedAt,
 		&i.UpdatedAt,
+		&i.UpdatedBy,
 		&i.IsDispensed,
 		&i.DispensedBy,
 		&i.DispensedAt,
 		&i.CreatorName,
+		&i.UpdaterName,
 		&i.DispenserName,
 	)
 	return i, err
@@ -448,8 +454,9 @@ SELECT
   pl.frequency_code,
   pl.duration, pl.duration_unit,
   pl.total_to_dispense, pl.is_packed, pl.packed_by, pl.packed_at,
-  u1.name AS packer_name,
-  u2.name AS updater_name,
+  u_packer.name AS packer_name,
+  u_updater.name AS updater_name,
+  u_creator.name AS creator_name,
   d.generic_name AS drug_name,
   d.route_code AS route_code,
   d.dispense_unit AS dispense_unit,
@@ -461,8 +468,9 @@ SELECT
   END AS display_strength
 FROM prescription_lines pl
 LEFT JOIN drugs d ON d.id = pl.drug_id
-LEFT JOIN users u1 ON u1.id = pl.packed_by
-LEFT JOIN users u2 ON u2.id = pl.updated_by
+LEFT JOIN users u_packer ON u_packer.id = pl.packed_by
+LEFT JOIN users u_updater ON u_updater.id = pl.updated_by
+LEFT JOIN users u_creator ON u_creator.id = pl.created_by
 WHERE pl.prescription_id = $1
 ORDER BY pl.id
 `
@@ -484,6 +492,7 @@ type ListPrescriptionLinesRow struct {
 	PackedAt        *time.Time  `json:"packed_at"`
 	PackerName      *string     `json:"packer_name"`
 	UpdaterName     *string     `json:"updater_name"`
+	CreatorName     *string     `json:"creator_name"`
 	DrugName        *string     `json:"drug_name"`
 	RouteCode       *string     `json:"route_code"`
 	DispenseUnit    *string     `json:"dispense_unit"`
@@ -516,6 +525,7 @@ func (q *Queries) ListPrescriptionLines(ctx context.Context, prescriptionID int6
 			&i.PackedAt,
 			&i.PackerName,
 			&i.UpdaterName,
+			&i.CreatorName,
 			&i.DrugName,
 			&i.RouteCode,
 			&i.DispenseUnit,
diff --git a/repository/sqlc/users.sql.go b/repository/sqlc/users.sql.go
index 0c63f07..f6693c6 100644
--- a/repository/sqlc/users.sql.go
+++ b/repository/sqlc/users.sql.go
@@ -1,6 +1,6 @@
 // Code generated by sqlc. DO NOT EDIT.
 // versions:
-//   sqlc v1.27.0
+//   sqlc v1.30.0
 // source: users.sql
 
 package db
@@ -10,39 +10,37 @@ import (
 )
 
 const getUserByID = `-- name: GetUserByID :one
-SELECT id, username, password_hash
+SELECT id, username
 FROM users
 WHERE id = $1
 `
 
 type GetUserByIDRow struct {
-	ID           int64  `json:"id"`
-	Username     string `json:"username"`
-	PasswordHash string `json:"password_hash"`
+	ID       int64  `json:"id"`
+	Username string `json:"username"`
 }
 
 func (q *Queries) GetUserByID(ctx context.Context, id int64) (GetUserByIDRow, error) {
 	row := q.db.QueryRow(ctx, getUserByID, id)
 	var i GetUserByIDRow
-	err := row.Scan(&i.ID, &i.Username, &i.PasswordHash)
+	err := row.Scan(&i.ID, &i.Username)
 	return i, err
 }
 
 const getUserByUsername = `-- name: GetUserByUsername :one
-SELECT id, username, password_hash
+SELECT id, username
 FROM users
 WHERE username = $1
 `
 
 type GetUserByUsernameRow struct {
-	ID           int64  `json:"id"`
-	Username     string `json:"username"`
-	PasswordHash string `json:"password_hash"`
+	ID       int64  `json:"id"`
+	Username string `json:"username"`
 }
 
 func (q *Queries) GetUserByUsername(ctx context.Context, username string) (GetUserByUsernameRow, error) {
 	row := q.db.QueryRow(ctx, getUserByUsername, username)
 	var i GetUserByUsernameRow
-	err := row.Scan(&i.ID, &i.Username, &i.PasswordHash)
+	err := row.Scan(&i.ID, &i.Username)
 	return i, err
 }
diff --git a/sql/1_users_setup.sql b/sql/1_users_setup.sql
index 3182144..d34dea5 100644
--- a/sql/1_users_setup.sql
+++ b/sql/1_users_setup.sql
@@ -4,22 +4,38 @@
 DROP TABLE IF EXISTS users;
 
 /*******************
-    Add usernames and passwords
+    Add usernames
  */
 CREATE TABLE users (
   id            BIGSERIAL PRIMARY KEY,
   username      TEXT NOT NULL UNIQUE,
   name          TEXT,
-  password_hash TEXT NOT NULL,
   created_at    TIMESTAMPTZ NOT NULL DEFAULT now(),
   updated_at    TIMESTAMPTZ NOT NULL DEFAULT now()
 );
 
 -- Insert the users
-INSERT INTO users (username, name, password_hash)
-VALUES ('admin', 'admin', '$2a$10$Y/FMxVZsuiPcVutd0O3kfuWEyWyqZUb4HC5yXF7.xVxNCt9GUfOPe');
-INSERT INTO users (username, name, password_hash)
-VALUES ('user', 'user', '$2a$10$cqFdRzsZVwGF6fI4N.YEYOOEZL7B/93RmEZRkVPVHHqyBMfNwy48i');
+INSERT INTO users (username, name)
+VALUES 
+  ('admin', 'admin'),
+  ('user', 'user'),
+  ('reg', 'Reg'),
+  ('reg_id', 'Reg (ID)'),
+  ('va', 'VA'),
+  ('fall_risk', 'Fall Risk'),
+  ('dental', 'Dental'),
+  ('physiotherapy', 'Physiotherapy'),
+  ('pharmacy_packer', 'Pharmacy packer'),
+  ('pharmacy_dispenser', 'Pharmacy dispenser'),
+  ('dr_ron', 'Dr Ron'),
+  ('dr_joseph', 'Dr Joseph'),
+  ('dr_hh', 'Dr HH'),
+  ('dr_kevan', 'Dr Kevan'),
+  ('dr_sherryl', 'Dr Sherryl'),
+  ('dr_jonathan', 'Dr Jonathan'),
+  ('dr_lauren', 'Dr Lauren'),
+  ('dr_celeste', 'Dr Celeste'),
+  ('dr_barbara', 'Dr Barbara');
 
 --------------------------------------------------------------------------------
 -- GLOBAL AUDIT HELPERS (used by ALL other tables; keep them in this file)
diff --git a/sql/2_patients_setup.sql b/sql/2_patients_setup.sql
index f3ad864..8f00129 100644
--- a/sql/2_patients_setup.sql
+++ b/sql/2_patients_setup.sql
@@ -25,7 +25,12 @@ CREATE TABLE IF NOT EXISTS patient_details
   gender         VARCHAR(1) NOT NULL,
   village        TEXT       NOT NULL,
   contact_no     TEXT       NOT NULL,
-  drug_allergies TEXT
+  drug_allergies TEXT,
+
+  created_at          TIMESTAMPTZ NOT NULL DEFAULT now(),
+  created_by          BIGINT REFERENCES users(id),
+  updated_at          TIMESTAMPTZ,
+  updated_by          BIGINT REFERENCES users(id)
 );
 
 CREATE TABLE IF NOT EXISTS admin
@@ -37,6 +42,12 @@ CREATE TABLE IF NOT EXISTS admin
   pregnant              BOOLEAN NOT NULL,
   last_menstrual_period DATE,
   sent_to_id            BOOLEAN NOT NULL,
+
+  created_at          TIMESTAMPTZ NOT NULL DEFAULT now(),
+  created_by          BIGINT REFERENCES users(id),
+  updated_at          TIMESTAMPTZ,
+  updated_by          BIGINT REFERENCES users(id),
+
   PRIMARY KEY (id, vid)         -- Composite primary key
 );
 
@@ -60,6 +71,12 @@ CREATE TABLE IF NOT EXISTS past_medical_history
     sexually_transmitted_disease BOOLEAN,                               -- Allow NULL for 'Nil' option
     specified_stds               TEXT,
     others                       TEXT,
+
+    created_at          TIMESTAMPTZ NOT NULL DEFAULT now(),
+    created_by          BIGINT REFERENCES users(id),
+    updated_at          TIMESTAMPTZ,
+    updated_by          BIGINT REFERENCES users(id),
+  
     PRIMARY KEY (id, vid),                                               -- Composite primary key
     CONSTRAINT fk_admin FOREIGN KEY (id, vid) REFERENCES admin (id, vid) ON DELETE CASCADE -- Foreign key referencing the composite key in admin
 );
@@ -74,6 +91,12 @@ CREATE TABLE IF NOT EXISTS social_history
     cigarettes_per_day      INTEGER,
     alcohol_history         BOOLEAN NOT NULL,
     how_regular             VARCHAR(1),
+
+    created_at          TIMESTAMPTZ NOT NULL DEFAULT now(),
+    created_by          BIGINT REFERENCES users(id),
+    updated_at          TIMESTAMPTZ,
+    updated_by          BIGINT REFERENCES users(id),
+
     PRIMARY KEY (id, vid),                                               -- Composite primary key
     CONSTRAINT fk_admin FOREIGN KEY (id, vid) REFERENCES admin (id, vid) ON DELETE CASCADE -- Foreign key referencing the composite key in admin
 );
@@ -95,6 +118,12 @@ CREATE TABLE IF NOT EXISTS vital_statistics
     avg_hr                    NUMERIC(5, 1) NOT NULL,
     rand_blood_glucose_mmol_l  NUMERIC(5, 1),
     icope_high_bp             BOOLEAN,
+
+    created_at          TIMESTAMPTZ NOT NULL DEFAULT now(),
+    created_by          BIGINT REFERENCES users(id),
+    updated_at          TIMESTAMPTZ,
+    updated_by          BIGINT REFERENCES users(id),
+
     PRIMARY KEY (id, vid),                                               -- Composite primary key
     CONSTRAINT fk_admin FOREIGN KEY (id, vid) REFERENCES admin (id, vid) ON DELETE CASCADE -- Foreign key referencing the composite key in admin
 );
@@ -112,6 +141,12 @@ CREATE TABLE IF NOT EXISTS height_and_weight
 
     icope_lost_weight_past_months BOOLEAN,
     icope_no_desire_to_eat BOOLEAN,
+
+    created_at          TIMESTAMPTZ NOT NULL DEFAULT now(),
+    created_by          BIGINT REFERENCES users(id),
+    updated_at          TIMESTAMPTZ,
+    updated_by          BIGINT REFERENCES users(id),
+
     PRIMARY KEY (id, vid),                                               -- Composite primary key
     CONSTRAINT fk_admin FOREIGN KEY (id, vid) REFERENCES admin (id, vid) ON DELETE CASCADE -- Foreign key referencing the composite key in admin
 );
@@ -129,6 +164,11 @@ CREATE TABLE IF NOT EXISTS visual_acuity
     icope_eye_problem BOOLEAN,
     icope_treated_for_diabetes_or_bp BOOLEAN,
 
+    created_at          TIMESTAMPTZ NOT NULL DEFAULT now(),
+    created_by          BIGINT REFERENCES users(id),
+    updated_at          TIMESTAMPTZ,
+    updated_by          BIGINT REFERENCES users(id),
+
     PRIMARY KEY (id, vid),                                               -- Composite primary key
     CONSTRAINT fk_admin FOREIGN KEY (id, vid) REFERENCES admin (id, vid) ON DELETE CASCADE -- Foreign key referencing the composite key in admin
 );
@@ -147,6 +187,11 @@ CREATE TABLE IF NOT EXISTS dental
     icope_pain_in_mouth  BOOLEAN,
     dental_notes         TEXT,
 
+    created_at          TIMESTAMPTZ NOT NULL DEFAULT now(),
+    created_by          BIGINT REFERENCES users(id),
+    updated_at          TIMESTAMPTZ,
+    updated_by          BIGINT REFERENCES users(id),
+
     PRIMARY KEY (id, vid),                                               -- Composite primary key
     CONSTRAINT fk_admin FOREIGN KEY (id, vid) REFERENCES admin (id, vid) ON DELETE CASCADE -- Foreign key referencing the composite key in admin
 );
@@ -163,6 +208,11 @@ CREATE TABLE IF NOT EXISTS fall_risk
     fall_risk_score INTEGER NOT NULL,
     icope_complete_chair_stands BOOLEAN,
     icope_chair_stands_time BOOLEAN,
+
+    created_at          TIMESTAMPTZ NOT NULL DEFAULT now(),
+    created_by          BIGINT REFERENCES users(id),
+    updated_at          TIMESTAMPTZ,
+    updated_by          BIGINT REFERENCES users(id),
                           
     PRIMARY KEY (id, vid),                                               -- Composite primary key
     CONSTRAINT fk_admin FOREIGN KEY (id, vid) REFERENCES admin (id, vid) ON DELETE CASCADE -- Foreign key referencing the composite key in admin
@@ -187,6 +237,12 @@ CREATE TABLE IF NOT EXISTS doctors_consultation
     referral_needed    BOOLEAN NOT NULL,
     referral_loc       TEXT,
     remarks            TEXT,
+
+    created_at          TIMESTAMPTZ NOT NULL DEFAULT now(),
+    created_by          BIGINT REFERENCES users(id),
+    updated_at          TIMESTAMPTZ,
+    updated_by          BIGINT REFERENCES users(id),
+
     PRIMARY KEY (id, vid),                                               -- Composite primary key
     CONSTRAINT fk_admin FOREIGN KEY (id, vid) REFERENCES admin (id, vid) -- Foreign key referencing the composite key in admin
 );
@@ -200,10 +256,108 @@ CREATE TABLE IF NOT EXISTS physiotherapy
     objective_assessment       TEXT,                                     -- Objective Assessment (Open Ended)
     intervention               TEXT,                                     -- Intervention (Open Ended)
     evaluation                 TEXT,                                     -- Evaluation (Open Ended)
+
+    created_at          TIMESTAMPTZ NOT NULL DEFAULT now(),
+    created_by          BIGINT REFERENCES users(id),
+    updated_at          TIMESTAMPTZ,
+    updated_by          BIGINT REFERENCES users(id),
+
     PRIMARY KEY (id, vid),                                               -- Composite primary key
     CONSTRAINT fk_admin FOREIGN KEY (id, vid) REFERENCES admin (id, vid) -- Foreign key referencing the composite key in admin
 );
 
+/*******************
+    Create audit triggers for all tables
+********************/
+
+CREATE TRIGGER trg_patient_details_audit
+BEFORE INSERT OR UPDATE ON patient_details
+FOR EACH ROW EXECUTE FUNCTION set_audit_fields();
+
+CREATE TRIGGER trg_patient_details_log
+AFTER INSERT OR UPDATE OR DELETE ON patient_details
+FOR EACH ROW EXECUTE FUNCTION audit_row();
+
+CREATE TRIGGER trg_admin_audit
+BEFORE INSERT OR UPDATE ON admin
+FOR EACH ROW EXECUTE FUNCTION set_audit_fields();
+
+CREATE TRIGGER trg_admin_log
+AFTER INSERT OR UPDATE OR DELETE ON admin
+FOR EACH ROW EXECUTE FUNCTION audit_row();
+
+CREATE TRIGGER trg_past_medical_history_audit
+BEFORE INSERT OR UPDATE ON past_medical_history
+FOR EACH ROW EXECUTE FUNCTION set_audit_fields();
+
+CREATE TRIGGER trg_past_medical_history_log
+AFTER INSERT OR UPDATE OR DELETE ON past_medical_history
+FOR EACH ROW EXECUTE FUNCTION audit_row();
+
+CREATE TRIGGER trg_social_history_audit
+BEFORE INSERT OR UPDATE ON social_history
+FOR EACH ROW EXECUTE FUNCTION set_audit_fields();
+
+CREATE TRIGGER trg_social_history_log
+AFTER INSERT OR UPDATE OR DELETE ON social_history
+FOR EACH ROW EXECUTE FUNCTION audit_row();
+
+CREATE TRIGGER trg_vital_statistics_audit
+BEFORE INSERT OR UPDATE ON vital_statistics
+FOR EACH ROW EXECUTE FUNCTION set_audit_fields();
+
+CREATE TRIGGER trg_vital_statistics_log
+AFTER INSERT OR UPDATE OR DELETE ON vital_statistics
+FOR EACH ROW EXECUTE FUNCTION audit_row();
+
+CREATE TRIGGER trg_height_and_weight_audit
+BEFORE INSERT OR UPDATE ON height_and_weight
+FOR EACH ROW EXECUTE FUNCTION set_audit_fields();
+
+CREATE TRIGGER trg_height_and_weight_log
+AFTER INSERT OR UPDATE OR DELETE ON height_and_weight
+FOR EACH ROW EXECUTE FUNCTION audit_row();
+
+CREATE TRIGGER trg_visual_acuity_audit
+BEFORE INSERT OR UPDATE ON visual_acuity
+FOR EACH ROW EXECUTE FUNCTION set_audit_fields();
+
+CREATE TRIGGER trg_visual_acuity_log
+AFTER INSERT OR UPDATE OR DELETE ON visual_acuity
+FOR EACH ROW EXECUTE FUNCTION audit_row();
+
+CREATE TRIGGER trg_dental_audit
+BEFORE INSERT OR UPDATE ON dental
+FOR EACH ROW EXECUTE FUNCTION set_audit_fields();
+
+CREATE TRIGGER trg_dental_log
+AFTER INSERT OR UPDATE OR DELETE ON dental
+FOR EACH ROW EXECUTE FUNCTION audit_row();
+
+CREATE TRIGGER trg_fall_risk_audit
+BEFORE INSERT OR UPDATE ON fall_risk
+FOR EACH ROW EXECUTE FUNCTION set_audit_fields();
+
+CREATE TRIGGER trg_fall_risk_log
+AFTER INSERT OR UPDATE OR DELETE ON fall_risk
+FOR EACH ROW EXECUTE FUNCTION audit_row();
+
+CREATE TRIGGER trg_doctors_consultation_audit
+BEFORE INSERT OR UPDATE ON doctors_consultation
+FOR EACH ROW EXECUTE FUNCTION set_audit_fields();
+
+CREATE TRIGGER trg_doctors_consultation_log
+AFTER INSERT OR UPDATE OR DELETE ON doctors_consultation
+FOR EACH ROW EXECUTE FUNCTION audit_row();
+
+CREATE TRIGGER trg_physiotherapy_audit
+BEFORE INSERT OR UPDATE ON physiotherapy
+FOR EACH ROW EXECUTE FUNCTION set_audit_fields();
+
+CREATE TRIGGER trg_physiotherapy_log
+AFTER INSERT OR UPDATE OR DELETE ON physiotherapy
+FOR EACH ROW EXECUTE FUNCTION audit_row();
+
 -- Auto-increment VID per patient
 CREATE OR REPLACE FUNCTION set_entry_id() RETURNS TRIGGER AS
 $$
diff --git a/sql/4_prescription_setup.sql b/sql/4_prescription_setup.sql
index 0188119..2d6fe0f 100644
--- a/sql/4_prescription_setup.sql
+++ b/sql/4_prescription_setup.sql
@@ -196,13 +196,13 @@ BEGIN
    WHERE b.drug_id = p_drug_id;
 
   IF available < need_extra THEN
-    RAISE EXCEPTION 'insufficient stock: total needed %, available %', p_required, available + need_extra
+    RAISE EXCEPTION 'insufficient stock: total needed %, available %', p_required, available
       USING ERRCODE   = '23514',                 -- check_violation
             CONSTRAINT = 'ck_insufficient_stock',
             DETAIL     = json_build_object(
                             'drug_id', p_drug_id,
                             'total_required', p_required,
-                            'total_available', available + allocated 
+                            'total_available', available
                           )::text;
   END IF;
 END;
diff --git a/usecases/login_ucase.go b/usecases/login_ucase.go
index 6d6a075..eed6001 100644
--- a/usecases/login_ucase.go
+++ b/usecases/login_ucase.go
@@ -6,8 +6,6 @@ import (
 
 	"sothea-backend/controllers/middleware"
 	"sothea-backend/entities"
-
-	"golang.org/x/crypto/bcrypt"
 )
 
 type loginUsecase struct {
@@ -34,11 +32,6 @@ func (l *loginUsecase) Login(ctx context.Context, user entities.LoginPayload) (s
 		return "", err
 	}
 
-	err = bcrypt.CompareHashAndPassword([]byte(dbUser.PasswordHash), []byte(user.Password))
-	if err != nil {
-		return "", entities.ErrLoginFailed
-	}
-
 	token, err := middleware.CreateToken(dbUser.ID, user.Username, l.secretKey)
 	if err != nil {
 		return "", err