Hello. Thank you for writing to us The medicine that you have been taking is actually an Oral antibiotic i.e Azithromycin and has no role whatsoever in hair loss. The most likely cause of nausea is this wrong medication for hair loss. I would suggest you to discontinue this tablet. Hair loss can be due to various reasons like telogen effluvium, androgenetic alopecia, seborrheic dermatitis etc I suggest you to visit a dermatologist in your vicinity for an accurate assessment of the reason for hair loss and for the needful. Treatment for hair loss can be with Oral and/ or topical medications and that is goverened by the actual reason for hair loss e.g minoxidil and oral finasteride are approved medications of hair fall in males; Telogen effluvium is commonly due to Iron deficiency. Biotin deficiency can also lead to hair fall and the same can be supplemented in patients of telogen effluvium Regards