sibutramine (Meridia)

What is sibutramine, and how does it work (mechanism of action)?

Sibutramine is a medication that assists with weight-loss by altering neurotransmitters within the brain. Neurotransmitters are chemicals that are produced and released by nerves in order to communicate with other nerves. Released neurotransmitters may attach to other nerves or they may be taken up again by the nerves that release them, a process termed reuptake. Sibutramine blocks the reuptake of the neurotransmitters dopamine, norepinephrine, and serotonin. Blocking the reuptake of neurotransmitters alters the balance of neurotransmitters within the nerve cells and thereby affect nerve function and interaction.

Patients taking sibutramine may achieve a 5-10% reduction from their baseline weight. Additionally, sibutramine-assisted weight loss has been accompanied by improvement in blood lipids (e.g, cholesterol). Sibutramine was approved by the FDA in 1997.

What brand names are available for sibutramine?

Meridia

Is sibutramine available as a generic drug?

GENERIC AVAILABLE: No

Do I need a prescription for sibutramine?

Yes

What are the side effects of sibutramine?

In general, sibutramine is well-tolerated. The most common side effects have been:

Abnormal liver tests have been reported in 1 in 60 persons who receive sibutramine.

Other important side effects include:

However, it has not been established that sibutramine caused these events. If any of these events occur during treatment, sibutramine probably should be discontinued.

Medically Reviewed by a Doctor on 10/12/2015
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