Something to be aware of is that it can cause genital physical deformities in male offspring.
> Boys were more likely to be born with genital birth defects if their fathers took the commonly prescribed diabetes drug metformin in the three months before conception, according to a new study by Stanford Medicine investigators and their collaborators in Denmark.
It does often cause significant gastrointestinal problems. Same as weight loss drugs. A lot of people think these drugs are free lunch but they are not.
Hmm, that is a very long time to suffer the side effects. The information leaflets often say to discontinue much sooner.
Well, if your doctor was okay with it, then who are internet strangers to judge? If you had the usual non-tolerance GI problems (more frequent than in 1 in 10 patients), I can only admire the perseverance. It takes a lot of self-care from keeping close to a toilet to hydration.
My wife had this problem when she started metformin. After 2 weeks of diarrhea she tried a different approach, she purposely skipped her medication every other day for a week. The she gradually started taking it every day. The problems went away over night. Her doctor was baffled which is…funny.
I think some drugs are more easily tolerated by the body if they are gradually introduced.