desvenlafaxine (Pristiq, Khedezla)

  • Pharmacy Author:
    Omudhome Ogbru, PharmD

    Dr. Ogbru received his Doctorate in Pharmacy from the University of the Pacific School of Pharmacy in 1995. He completed a Pharmacy Practice Residency at the University of Arizona/University Medical Center in 1996. He was a Professor of Pharmacy Practice and a Regional Clerkship Coordinator for the University of the Pacific School of Pharmacy from 1996-99.

  • Medical and Pharmacy Editor: Jay W. Marks, MD
    Jay W. Marks, MD

    Jay W. Marks, MD

    Jay W. Marks, MD, is a board-certified internist and gastroenterologist. He graduated from Yale University School of Medicine and trained in internal medicine and gastroenterology at UCLA/Cedars-Sinai Medical Center in Los Angeles.

  • Medical and Pharmacy Editor: William C. Shiel Jr., MD, FACP, FACR
    William C. Shiel Jr., MD, FACP, FACR

    William C. Shiel Jr., MD, FACP, FACR

    Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.

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GENERIC NAME: desvenlafaxine

BRAND NAME: Pristiq, Khedezla

DRUG CLASS AND MECHANISM: Desvenlafaxine is an oral drug that is used for treating depression. It is in a class of antidepressant drugs called selective serotonin and norepinephrine reuptake inhibitors (SNRI); a class that also contains venlafaxine (Effexor) and duloxetine (Cymbalta). (Desvenlafaxine is an active metabolite of venlafaxine, that is, it is a product of venlafaxine that is manufactured by the body from venlafaxine.) Desvenlafaxine affects neurotransmitters, the chemicals that nerves within the brain make and release in order to communicate with each other. Neurotransmitters either travel across the space between nerves and attach to receptors on the surface of nearby nerves or they attach to receptors on the surface of the nerves that produced them, to be taken up by the nerve and released again (a process referred to as re-uptake).

Many experts believe that an imbalance among neurotransmitters is the cause of depression. Serotonin and norepinephrine are two neurotransmitters released by nerves in the brain. Desvenlafaxine works by preventing the reuptake of serotonin and epinephrine by nerves after they have been released. Since uptake is an important mechanism for removing released neurotransmitters and terminating their actions on adjacent nerves, the reduced uptake caused by desvenlafaxine increases the effect of serotonin and norepinephrine in the brain. The FDA approved desvenlafaxine in February 2008.

PRESCRIPTION: Yes

GENERIC AVAILABLE: Yes

PREPARATIONS: Tablets (extended release): 50 and 100 mg

STORAGE: Tablets should be kept at room temperature, 20 C and 25 C (68 F and 77 F).

Medically Reviewed by a Doctor on 8/6/2014

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