One thing that works for me that my roommate taught me was chewing gum. Get a good/yummy sugar free gum and chew away. I have learned that it controls my munchies almost everytime!!
Another thing that worked was blowpops. I know these are nothing but sugar so I am not sure if you want to use these to cure your munchies since you are trying to lose weight and all but they work good too since you are kinda eating something and then afterwards you have the gum to chew on. Plus as long as you don't bite it the blowpop will last a while which will most likely get you through you munchie phase (depending on how long your munchie phase lasts)

I hoped I helped!!