1:24 AM
kotesh
Drugs used during pregnancy can have temporary or permanent effects on the fetus. Therefore many physicians would prefer not to prescribe for pregnant women, the major concern being over teratogenicity of the drugs.
Drugs have been classified into categories A,B,C,D and X based on the Food and Drug Administration (FDA) rating system to provide therapeutic guidance based on potential benefits and fetal risks. Drugs like multivitaminsthalidomide with proven fetal risks that outweigh all benefits are classified as Category X that have demonstrated no fetal risks after controlled studies in humans are classified as Category A. On the other hand drugs like 
