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Drugs to avoid during Pregnancy

By  , Expert Content
Sep 21, 2012
4.8 / 5(4 Ratings)

Drugs to avoid during Pregnancy


On principle, unnecessary medication is avoided during pregnancy, especially during the first trimester because organogenesis is taking place. [Read: First Trimester Pregnancy Symptoms]


Drugs are categorized according to their safety profile during various trimesters of pregnancy.


“A” Category Drugs have been found to be safe during pregnancy, even in the first trimester.


[Read: Pregnancy Tips for First Trimester]


Example: Vitamin B6, Folic Acid & Thyroid medication

“B” Category Drugs have been used frequently without causing damage or side effects



  • Antipyretics like Accetaminophen
  • Antidiabetics like Amoxicillin and cephalosporins
  • Anticonvulsants like Magnesium Sulphate
  • Prednisolone
  • Famotidine


“C” Category Drugs to be used only if necessary


Drugs to be avoided are:

  • Ciprofloxacin
  • Fluconazole


“D” Category Drugs may affect the fetus



  • Alcohol
  • Lithium
  • Phenytoin


[Read: Drinking Alcohol during Pregnancy]


“X” Category Drugs cause birth defects



  • Thalidomide
  • Salicylates and Asprin in last trimester increases the risk of bleeding


The contributor, Dr. Loveleena Nadir is Sr. Consultant, Obs & Gynae at Fortis La Femme.


Read more articles on During Pregnancy



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