Injected Botox on hands for hyperhidrosis but it's worsened

The Botox may not have taken effect at 3 days.  If at two weeks there is still more sweat than what you hoped for, you may need additional units injected.  The only consideration in the hands is that a greater number of units could also cause more weakness than desired in the hand muscles.  Although you can get compensatory sweating after treatment, that usually occurs elsewhere and not in the treated area.  

It can take up to two weeks to see the result of your Botox treatment.  You only had 50 units so if you are still sweating excessively at that time, you would require additional treatment.

Botox normally can take easily up to a week to work for the sweating. Give yourself a little more time and good luck from New York City