Hi what???
I have the same problem, i tend to sweat lots if its warm, but more so if i'm embarassed or stressed.
I don't know if your using your deodorant wrongly or anything. But I use a stronger product called Driclor. You apply it just before you go to sleep, then in the morning wash it off, and use normal deodorant as usual, and it does help alot.
But be warned:
* make sure your underarms are fully dry before applying.
*don't use straight after shaving.
*It can stain, so wear an old tshirt to sleep in.
There will be other products, but thats just an example.
Hope that helps.xx