You do not want to get any moisture onto the other remaining pills in the bottle as they will turn to powder. Also, once
this bottle is opened
, the shelf life
decreases. I get 25 pills per bottle and have had to only open one bottle so far. They are fairly cheap to buy. I buy a package with 4 little bottles in it.
Also, yes, you can feel lightheaded and also get a headache after taking a nitro but this sure is better than these %^%&^$^%$& stomach attacks.