Sounds like it’s a bit like playing Russian Roulette when you try synthetic drugs.
Dont ever let your doctor prescribe Ultram or Tramadol to you. Its synthetic morphine chemically bonded with an anti depressant drug very similar to Effexor.
Very bad 5 years for me back before the Docs finally admitted that it could, maybe, possibly, occasionally be slightly addictive to some people.
Russian Roulette is exactly right!