Hi, Regain, Bontress, and Follihair is commonly used medications to treat male pattern baldness, but like all medications, they can have side effects. Here are some of the potential side effects of each medication: * Regain (Minoxidil) lotion: - Scalp itching, redness, or irritation - Dryness or flaking of the scalp - Increased hair loss initially - Dizziness, lightheadedness, or fainting when standing up - Rapid or irregular heartbeat * Bontress (Bimatoprost) lotion: - Eye irritation or redness if it comes in contact with the eyes - Skin irritation or allergic reactions at the application site - Hair growth in unintended areas like the cheeks or forehead * Follihair (a combination of biotin, vitamins, and minerals) capsule: - Nausea or upset stomach - Diarrhea or constipation - Skin rash or hives - Unusual tiredness or weakness It s important to note that these side effects may not affect everyone, and some people may experience different or no side effects at all. Regarding Finpecia, it contains finasteride, which is known to have potential side effects like: * Sexual dysfunction (e.g., decreased libido, erectile dysfunction) * Breast enlargement or tenderness * Depression or anxiety * Increased risk of high-grade prostate cancer If you have concerns about the side effects of your medications, it s important to discuss them with your healthcare provider. They can help you weigh the benefits and risks of each medication and decide on the best treatment plan for your individual needs. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Priyanka, General & Family Physician