What causes severe headaches after taaking Fol123 pills?
Patient: i am taking fol123 pills for the past 4 days. Yesterday night onwards I am having severe headache and today vomitting (only once). My doctor prescribed this pill since I had irregular periods and bi-lateral cyst. Advice me the above side effects will be there on consuming this pills Doctor: Hello,  Fol123 pills is not known to cause any headache but there may be individual variation.  If you don't tolerate the drug, you need to discontinue it and take some other preparation of omega-3 fatty acid, Folic acid   & Vitamin B12, if these are really indicated.  Hope I have answered your query. Let me know if I can assist you further.  Take care  Regards, Dr Tushar Kanti Biswas, Internal Medicine Specialist