I use Aggrenox (blood thinner) and Losartan (blood pressure) and my hair is thinning. If I use women's Rogaine will there be any side effects, or problems with the medications? Glo ## Hello, Glo! How are you? I didn't find any interactions or problems listed, but it's always best to double check such information to be sure. However, you may be better served to speak to your doctor about switching off of the Losartan to a different medication, it has been known to cause hair thinning and hair loss in some people that take it. Additional side effects, as listed by the FDA may possibly include nausea, dizziness, headache, increased urination and hypotension. Is there anything else I can help with?