Belviq vs. Qsymia

Are Belviq and Qsymia the Same Thing?

Belviq (lorcaserin hydrochloride) and Qsymia (phentermine and topiramate extended-release) are used for chronic weight management in adults with a body mass index (BMI) of 30 or greater (obese) as an addition to a reduced-calorie diet and exercise.

Belviq is also approved for use by adults with a BMI of 27 or greater (overweight) and who have at least one weight-related condition such as high blood pressure (hypertension), type 2 diabetes, or high cholesterol (dyslipidemia).

Belviq and Qsymia belong to different drug classes. Belviq is a serotonin 2C receptor agonist and Qsymia is a combination appetite suppressant/stimulant and seizure medication.

What Are Possible Side Effects of Belviq?

Common side effects of Belviq include:

What Are Possible Side Effects of Qsymia?

Common side effects of Qsymia include:

What Is Belviq?

Belviq (lorcaserin hydrochloride) is a serotonin 2C receptor agonist indicated for the treatment of chronic weight management in adults with a body mass index (BMI) of 30 or greater (obese) as an addition to a reduced-calorie diet and exercise. Belviq is also approved for use by adults with a BMI of 27 or greater (overweight) and who have at least one weight-related condition such as high blood pressure (hypertension), type 2 diabetes, or high cholesterol (dyslipidemia).

What Is Qsymia?

Qsymia (phentermine and topiramate extended-release) is a combination appetite suppressant/stimulant and seizure medication indicated as an adjunct to a reduced-calorie diet and increased physical activity for chronic weight management in overweight and obese adults.

SLIDESHOW

Surprising Causes of Weight Gain See Slideshow

What Drugs Interact With Belviq?

Belviq may interact with antidepressants, including selective serotonin reuptake inhibitors (SSRIs), serotonin-norepinephrine reuptake inhibitors (SNRIs), monoamine oxidase inhibitors (MAOIs), triptans, bupropion, dextromethorphan, or St. John's Wort. Tell your doctor all medications you use.

What Drugs Interact With Qsymia?

Other medications may interact with Qsymia. Tell your doctor all medications you use.

How Should Belviq Be Taken?

Belviq is taken orally. The recommended dosage of Belviq is one 10mg tablets taken twice per day. Belviq should be discontinued if 5% weight loss is not achieved by week 12 of therapy.

How Should Qsymia Be Taken?

Dosing of Qsymia is based on the body mass index (BMI) of the patient. Start treatment with Qsymia 3.75 mg/23 mg (phentermine 3.75 mg/topiramate 23 mg extended-release) daily for 14 days; after 14 days increase to the recommended dose of Qsymia 7.5 mg/46 mg (phentermine 7.5 mg/topiramate 46 mg extended-release) once daily. Weight loss should be evaluated 12 weeks after the start of treatment.

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References
Medical Editor: John P. Cunha, DO, FACOEP

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