diff --git a/src/entity/emr/emr_compounding_medicine.ts b/src/entity/emr/emr_compounding_medicine.ts
index e1a3ee4..6b7f871 100644
--- a/src/entity/emr/emr_compounding_medicine.ts
+++ b/src/entity/emr/emr_compounding_medicine.ts
@@ -5,10 +5,14 @@ import {
     CreateDateColumn,
     UpdateDateColumn,
     DeleteDateColumn,
-    OneToMany
+    OneToMany,
+    ManyToOne,
+    JoinColumn
 } from "typeorm";
 
-import {EmrCompoundingMedicineItem} from "./emr_compounding_medicine_item";
+import { EmrCompoundingMedicineItem } from "./emr_compounding_medicine_item";
+import { UsageTime } from "../pharmacy/usage_time";
+import { UsageInstructions } from "../pharmacy/usage_instructions";
 
 @Entity("emr_compounding_medicine", { schema: "emr" })
 export class EmrCompoundingMedicine {
@@ -30,11 +34,13 @@ export class EmrCompoundingMedicine {
     @Column({ nullable: true, type: "text" })
     compounding_notes: string;
 
-    @Column({ nullable: true, type: "text" })
-    usage_time: string;
+    @ManyToOne(() => UsageTime, { onDelete: "CASCADE" })
+    @JoinColumn()
+    usagetime: UsageTime;
 
-    @Column({ nullable: true, type: "text" })
-    usage_instructions: string;
+    @ManyToOne(() => UsageInstructions, { onDelete: "CASCADE" })
+    @JoinColumn()
+    usageinstructions: UsageInstructions;
 
     @Column()
     @CreateDateColumn()