I'm on low dose aspirin b/c I have a stent. Can PRP treatment for hair loss still be effective? From what I've read (but I'm no scientist!) you would have to stay off aspirin for 10 -14 days to allow the platelets to regenerate, but I doubt my cardiologist would be happy about that. I don't want to go through the discomfort and expense of the PRP treatment if the aspirin will prevent the desired outcome! (Aspirin is the only platelet-inhibitor I take.)