RIMA are in essence MAOI with a reversible mechanism of interaction (Wiki if you need details). Read up [Harmalas] MAOI Drug Interaction Disclaimer over in FAQ before you do anything. Safety 1st.
In general reversible MAOI are safer than non-reversible. Remember though that they are still MAOI. NEVER mix with SSRI and be cautious about what you eat.
I had major issues with Syrian Rue as well. Even small doses give me gastrointestinal issues (including projectile vomit once ;-) ).
My solution was Moclobemide (my doc didn't even ask questions, mild depression was my reasoning). It comes under multiple brand names (Aurorix, Clobemix etc). 150mg works for me well, 300mg inhibits the enzyme almost completely. Wait at least an hour after taking MAOI for it to act properly.
Ps. If you do go the doctor route use the visit to ask any questions you have concerning MAOI.
Be inquisitive and always question things...