When Phentermine stops working it usually leads to a stimulant induced psychosis episode and sometimes depression.
Phentermine is nearly the same as Qsymia although the difference between the medication Qsymia (phentermine / topiramate ER) and phentermine (Adipex-P) is that Qsymia (phentermine / topiramate ER) contains an additional medication, topiramate, to help with weight loss.
Phentermine/topiramate (Qsymia) combines a centrally acting appetite suppressant (phentermine) with an antiepileptic agent (topiramate) in an extended-release capsule.
You do need a prescription for Qsymia as Qsymia is by prescription only and not over the counter.
The best time to take Qsymia is in the morning with or without food.
Also when taking Qsymia be sure to drink plenty of water everyday to prevent dehydration as well as kidney stones.
Qsymia does begin working immediately after you begin taking it.
Qsymia is said to reduce your appetite which gives you all day control of your hunger.
The side effects of Qsymia include.
Numbness or tingling in the hands, arms, feet, or face (paraesthesia)
Dizziness.
Changes in the way foods taste or loss of taste (dysgeusia)
Trouble sleeping (insomnia)
Constipation.
Dry mouth.