What is Phentermine-topiramate?

Category: Prescription Drugs

Most popular types: Qsymia


This product combines the appetite suppressant phentermine with the anti-convulsant topiramate to aid in weight management. This combination is intended to be used in conjunction with a reduced-calorie diet and increased physical activity for weight management in obese or overweight individuals.

Side effects

Side effects as an overall problem

Side effects as an overall problem
Severity Evaluations
Severe 3
Moderate 0
Mild 1
None 2

Commonly reported side effects and conditions associated with Phentermine-topiramate

Side effect Patients
Anxiety attacks 1
Erectile dysfunction 1
Fatigue 1
Feeling hot/overheating 1
Fever/chills 1


Based on patients currently taking Phentermine-topiramate

Dosage Patients
2 x 3.75-23 mg daily 1

Why patients stopped taking Phentermine-topiramate

Multiple reasons could be selected

Reason Patients
Did not seem to work 1
Side effects too severe 1
See 1 patient who's stopped taking Phentermine-topiramate


Currently taking Phentermine-topiramate

Duration Patients
2 - 5 years 1

Stopped taking Phentermine-topiramate

Duration Patients
1 - 6 months 1
Adherence Evaluations
Always 6
Usually 0
Sometimes 0
Never taken as prescribed 0
Burden Evaluations
Very hard to take 1
Somewhat hard to take 0
A little hard to take 0
Not at all hard to take 5
Cost per month
Cost per month Evaluations
$200+ 1
$100-199 1
$50-99 0
$25-49 2
< $25 1
Not specified 1

What people switch to and from

Patients started taking Phentermine-topiramate after stopping:

Treatment Patients
Lorcaserin (Belviq) 1

Patients stopped taking Phentermine-topiramate and switched to:

Treatment Patients
Liraglutide (Victoza) 1
Lorcaserin (Belviq) 1
Last updated:

1 patient evaluation for Phentermine-topiramate

Mar 13, 2015 (Started Oct 15, 2014)

  • Effectiveness
    Major (for tremor(s))
  • Side effects
    Severe (fatigue, erectile dysfunction, dizziness with nausea, whole body ache, nausea and vomiting, fever/chills)
  • Adherence
  • Burden
    Very hard to take
Dosage: 25 mg Daily
Advice & Tips: Ramp up the dosage slowly, like 25mg per day each month.
Cost: < $25 monthly

  • 0 helpful marks
Last updated:
Showing 1 of 1 patient evaluation for Phentermine-topiramate