Lot of perspiration from my armpits. What can i do?

I sweat a lot from my armpits it all started 3 yrs ago. I eat fairly good. Dont drink a lot of soda, also i use rightguard deo. I have tried centri dri and it didnt work. I dont like the idea that it ruins my clothes. If there is something you would suggest running away from doctors. All of it would be greatly appreciated. Thanks.