Yeah. Most drug store MAOIs are non-reversible MAOIs that affect both MAO-A and MAO-B and are EXTREMELY DANGEROUS! Eating aged cheese while taking a full blown pharmaceutical MAOI can KILL YOU! That's no joke. Harmala alkaloids are not full blown MAOI compounds. They are RIMAs, which means they are short acting, only affect MAO-A, and are reversible (meaning tyramine can displace them). It's a whole different ballgame. The only pharmaceutical MAOI that I know of that's popular that's a RIMA is moclobemide. That one is about as safe as harmine, harmline, THH, etc., because it's a RIMA, but all the others out there are super dangerous.