"nothing for 10 days or so, then no appetite at all.  started exercising, feeling better about myself (it&#039;s a mood enhancer), and lost 20 pounds in 35 days.  side effects are dry mouth, slight forgetfulness and possibly some tinnitus, but that&#039;s it.  really working well for me!  get the free trial from belviq then their discount card after that.  i love the minor side effects, phentermine and topamax were just awful, topamax the worst.  phentermine is great if you want to feel like a character in &quot;breaking bad.&quot;"