Yes.
THH gets destroyed by MAO-A in the gut, that’s why it’s more potent when snorted or taken sublingually. That’s also why it’s an MAO-A inhibitor because it rapidly uses up all the MAO-A enzymes.
In fact, taking an MAOI 20 minutes before taking THH will make it work even better orally. I’ve heard that taking 100 mg of harmaline 20 minutes before taking 200 mg of THH will make the THH become “active”. I’m not sure what that means. I assume it becomes psychedelic like it does at the 350 mg dose when taken alone.
When, ayahuasca is taken by the natives, they usually take it several times over and over, so that should make the THH become “active”.
Has anyone tried taking harmaline and then THH 20 minutes later?