stopping sweaty armpits

Try using arm and hammer baking soda deorderant it works.
And if that does not work than that means your sweat glands are over loaded. And if this keeps on happening (is this severe?) you need to go to the doctors to get subscribed to a better deorderant that is helpful to you and your body.
And the best thing to do is stop drinking all those liquids, like if your an alcohol drinker thats probably why! Or your body is lacking of water.

I had my sweat glands removed when I was about 18.....For the same reason as you..Profuse , excessive sweating (only in my armpits. It worked like a charm, but my doctor told me they could grow back. It is now 25 yrs later, and they are back, but I have it under control with antiperspirant.
Try asking your doctor about removal of the glands, or maybe today they have a new way of dealing with this.
Hope this helps!!

Theres this stuff called certain dri, you put it on at night...Its amazing, you dont sweat at all. You can get it at your drugstore.

I used Driclor. Stings like hell but it works. Wash armpits 2 hours before you go to bed then apply Driclor which comes as a roll on. Once I had put it on it soon started to itch but I stuck it out and in the morning you wash it off! Probably best to do it at weekend so you don't have to put deodrant on for a day as it will be sore or put that sensitive deo on, the white stuff! Try and put some more driclor on after a few days once armpits have recovered! It does work! You can go back using normal deodrant after that. It last for months before you have to use driclor again! It even lasted over a year for me! Good luck!