Drugs to avoid during Pregnancy

The time of pregnancy is a crucial one, so be careful of what sort of drugs you are taking in. Here is an expert take on drugs that  should not be taken during pregnancy.

Dr Loveleena Nadir
PregnancyWritten by: Dr Loveleena NadirPublished at: Sep 21, 2012
Drugs to avoid during Pregnancy

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.


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