“Over a 1 week period I tapered down, then went cold turkey.”
Years ago I was able to cold turkey Librium, no problem, but more recently did a six-month taper of another prescription drug, non-benzo and non-opiate, but one that is notorious for discontinuation syndrome. Six months wasn’t excessively long.
some people need a long long time to taper off of some meds, particularly long standing ones.
Many work neurologically and some people have reactive systems.