diff --git a/Impala/OMOP_CDM_ddl_Impala.sql b/Impala/OMOP_CDM_ddl_Impala.sql
index 1702d2d..d442a6d 100644
--- a/Impala/OMOP_CDM_ddl_Impala.sql
+++ b/Impala/OMOP_CDM_ddl_Impala.sql
@@ -372,8 +372,6 @@ CREATE TABLE drug_exposure (
  days_supply INTEGER,
  sig STRING, -- TEXT
  route_concept_id INTEGER,
- effective_drug_dose DOUBLE, -- NUMERIC
- dose_unit_concept_id INTEGER,
  lot_number VARCHAR(50),
  provider_id INTEGER,
  visit_occurrence_id INTEGER,
diff --git a/Impala/OMOP_Parquet_v5.2.sql b/Impala/OMOP_Parquet_v5.2.sql
index a262c3b..d84a36b 100644
--- a/Impala/OMOP_Parquet_v5.2.sql
+++ b/Impala/OMOP_Parquet_v5.2.sql
@@ -254,8 +254,6 @@ SELECT
  days_supply,
  sig, -- TEXT
  route_concept_id,
- effective_drug_dose, -- NUMERIC
- dose_unit_concept_id,
  lot_number,
  provider_id,
  visit_occurrence_id,
diff --git a/Oracle/OMOP CDM ddl - Oracle.sql b/Oracle/OMOP CDM ddl - Oracle.sql
index 6fb019e..2a6d434 100644
--- a/Oracle/OMOP CDM ddl - Oracle.sql	
+++ b/Oracle/OMOP CDM ddl - Oracle.sql	
@@ -355,8 +355,6 @@ CREATE TABLE drug_exposure
      days_supply					INTEGER			NULL , 
      sig							CLOB	NULL , 
 	 route_concept_id				INTEGER			NULL ,
-	 effective_drug_dose			FLOAT			NULL ,
-	 dose_unit_concept_id			INTEGER			NULL ,
 	 lot_number						VARCHAR(50)		NULL ,
      provider_id					INTEGER			NULL , 
      visit_occurrence_id			INTEGER			NULL , 
diff --git a/PostgreSQL/OMOP CDM ddl - PostgreSQL.sql b/PostgreSQL/OMOP CDM ddl - PostgreSQL.sql
index 686c78d..790ce1a 100644
--- a/PostgreSQL/OMOP CDM ddl - PostgreSQL.sql	
+++ b/PostgreSQL/OMOP CDM ddl - PostgreSQL.sql	
@@ -355,8 +355,6 @@ CREATE TABLE drug_exposure
      days_supply					INTEGER			NULL , 
      sig							TEXT	NULL , 
 	 route_concept_id				INTEGER			NULL ,
-	 effective_drug_dose			NUMERIC			NULL ,
-	 dose_unit_concept_id			INTEGER			NULL ,
 	 lot_number						VARCHAR(50)		NULL ,
      provider_id					INTEGER			NULL , 
      visit_occurrence_id			INTEGER			NULL , 
diff --git a/README.md b/README.md
index cc49e5c..0d54b9c 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,8 @@ Release Notes for v5.2.0
 This version is based on the CDM working group proposals:
 * [#71](https://github.com/OHDSI/CommonDataModel/issues/71) 
   * Adds the field VERBATIM_END_DATE to DRUG_EXPOSURE and makes DRUG_EXPOSURE_END_DATE a required field
-
+* [#73](https://github.com/OHDSI/CommonDataModel/issues/73) 
+  * Removes EFFECTIVE_DRUG_DOSE and DOSE_UNIT_CONCEPT_ID from DRUG_EXPOSURE
 and is **backwards compatibile with v5.0.1**. The proposed and accepted changes include adding a datetime field to every table that had a date column and adding field DENOMINATOR_VALUE to the DRUG_STRENGTH table. These were the new columns added:
 
 
diff --git a/Sql Server/OMOP CDM ddl - SQL Server.sql b/Sql Server/OMOP CDM ddl - SQL Server.sql
index f3ad7bf..67f2109 100644
--- a/Sql Server/OMOP CDM ddl - SQL Server.sql	
+++ b/Sql Server/OMOP CDM ddl - SQL Server.sql	
@@ -355,8 +355,6 @@ CREATE TABLE drug_exposure
   days_supply					INTEGER			NULL ,
   sig							VARCHAR(MAX)	NULL ,
   route_concept_id				INTEGER			NULL ,
-  effective_drug_dose			FLOAT			NULL ,
-  dose_unit_concept_id			INTEGER			NULL ,
   lot_number					VARCHAR(50)		NULL ,
   provider_id					INTEGER			NULL ,
   visit_occurrence_id			INTEGER			NULL ,