diff --git a/rmd/sqlScripts.Rmd b/rmd/sqlScripts.Rmd
index 32a51d1..929c86c 100644
--- a/rmd/sqlScripts.Rmd
+++ b/rmd/sqlScripts.Rmd
@@ -290,7 +290,8 @@ FROM @TARGET_CDMV5_SCHEMA.DRUG_EXPOSURE d
 INNER JOIN @TARGET_CDMV5_SCHEMA.CONCEPT_ANCESTOR ca ON ca.DESCENDANT_CONCEPT_ID = d.DRUG_CONCEPT_ID
 INNER JOIN @TARGET_CDMV5_SCHEMA.CONCEPT c ON ca.ANCESTOR_CONCEPT_ID = c.CONCEPT_ID
 WHERE c.DOMAIN_ID = 'Drug'
-	AND c.CONCEPT_CLASS_ID = 'Ingredient';
+	AND c.CONCEPT_CLASS_ID = 'Ingredient'
+	AND c.STANDARD_CONCEPT = 'S';
 
 /* / */