I think we should always be cautious taking drugs we don't 'need' as would be the case for using telmisartan without the indication of high blood pressure.
Of course, the bias in medicine gives much more emphasis to
treating disease than
preventing disease.
While using a drug prophylactically -- in other words a drug you don't need -- to prevent something that may happen in the future seems like a good idea in many cases, it can introduce unwanted side effects on its own.
I'll highlight a couple that
@Type-IIx and
@PeterBond have pointed out. From
@Type-IIx's thread:
"1a. potassium dysregulation, e.g. hyperkalemia (increased potassium retention despite its direct action), and 1b. electrolyte imbalance
[...]
"3. severe hypotension for those with salt/electrolyte depletion or prolonged diuretic use"
While for most people, this may not be a concern, for competitive (precontest) bodybuilders, it could be a huge unknown variable to add additional drugs that influence electrolyte balance into the equation.
It's not like even the bodybuilding precontest "expert" coaches have a handle on managing this. They're even recommending stupid things like drinking Pedialyte.
I'm linking to the following article just to show the problems that already exist with diuretics that may have been combined with other drugs that affect potassium balance. There is NO connection to telmisartan and I am NOT trying to make one.
https://www.washingtonpost.com/investigations/interactive/2022/bodybuilding-extreme-training/
So caution is still advised.
I think there is a lot of unnecessary hysteria regarding many drugs. Most people will never have any of the worst side effects of any medication. Even fewer with 'safer' drugs. Yeah, telmisartan (and also metformin) are among the safest drugs that are often recommended prophylactically -- probably only a few drugs like vaccines are safer (but I'm not even going to go there lol).
But just because most people don't have problems, never assume you will react like most people.
I never had a problem with telmisartan. But as an n=1 example, metformin dropped my hematocrit from 50+% to low 40s.