What it is
A peptide (bremelanotide) that works in the brain on desire, not on blood flow. Approved in the US for low desire in women.
How it helps
Raises desire and arousal, which tadalafil does not touch.
What to watch for
Nausea is common, plus flushing and a short rise in blood pressure, so avoid it with high blood pressure. Frequent use can darken skin.
These are compounds to research, not a protocol to copy. Education and my opinion, not medical advice. Talk to a doctor, especially before combining anything with prescription medication. Shop links are affiliate links: tapping one opens the store and copies my code.