@aturtles the bottle I have is 5000mcg per capsule!!!

Is this a really really high dose???
The simplest answer is that we don't know.
Some of my research turns up these relevant quotes:
"The maximum safe dose of biotin is unknown."
"Because it is generally safe and well-tolerated many people take as high as 10000mcg [10mg] a day with no documented side effects."
"...according to the National Institute of Health, doses as high as 200mg have been used without significant adverse effects."
200mg. That's a lot more than 5mg.
I myself currently take 600mcg/day (included in my Jarrow Formulas sustained release ALA 2x) but I would have no hesitations going up to 5mg a day -- indeed, it's on my list of things to try again. (I make changes one at a time so I can isolate results.)
The cautious approach would be to take only some of the capsule -- break it open; as I recall it doesn't taste like much -- and start with somewhat less, perhaps an estimated 1mg, 2x day, just to see if you have any problems tolerating it, then titrate up over days.
I didn't have any problems with the 5mg, but YMMV, etc; see my disclaimer.
Hope this helps.