I’ve read reports online that cholesterol lowering drugs can cause hair loss. I believe statins might be one of the types of drugs in question. I do not know if the hair loss is permanent however. If you have lessened your loss with lower dosages that’s good news. I would definitely follow up with your doctor and even ask a doctor that specializes in hair loss. I would also research to see if there are other types of drugs that you can take for cholesterol without side effects. Good luck