What happens if I miss a dose (Effexor, Effexor XR)?
Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.
What happens if I overdose (Effexor, Effexor XR)?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.
Overdose symptoms may include vomiting, fast heart rate, blurred vision, extreme drowsiness, or seizure (convulsions).
What should I avoid while taking venlafaxine (Effexor, Effexor XR)?
Avoid drinking alcohol, which can increase some of the side effects of venlafaxine.
Venlafaxine may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert.
What other drugs will affect venlafaxine (Effexor, Effexor XR)?
Before using venlafaxine, tell your doctor if you regularly use other medicines that make you sleepy (such as cold or allergy medicine, sedatives, narcotic pain medicine, sleeping pills, muscle relaxers, and medicine for seizures or anxiety). They can add to sleepiness caused by venlafaxine.
Ask your doctor before taking any medicine for pain, arthritis, fever, or swelling. This includes aspirin, ibuprofen (Advil, Motrin), naproxen (Aleve, Naprosyn), diclofenac (Voltaren), indomethacin, piroxicam (Feldene), nabumetone (Relafen), etodolac (Lodine), and others. Taking any of these drugs with venlafaxine may cause you to bruise or bleed easily.
Tell your doctor about all other medications you use, especially:
- cimetidine (Tagamet, Tagamet HB);
- ketoconazole (Nizoral);
- linezolid (Zyvox);
- lithium (Eskalith, LithoBid);
- haloperidol (Haldol) or risperidone (Risperdal);
- tramadol (Ultram, Ultracet);
- tryptophan (sometimes called L-tryptophan);
- warfarin (Coumadin);
- almotriptan (Axert), frovatriptan (Frova), sumatriptan (Imitrex), naratriptan (Amerge), rizatriptan (Maxalt), or zolmitriptan (Zomig); or
- any other antidepressants such as amitriptyline (Elavil), amoxapine (Asendin), citalopram (Celexa), clomipramine (Anafranil), desipramine (Norpramin), escitalopram (Lexapro), fluoxetine (Prozac), fluvoxamine (Luvox), imipramine (Tofranil), nortriptyline (Pamelor), paroxetine (Paxil), protriptyline (Vivactil), sertraline (Zoloft), or trimipramine (Surmontil).
This list is not complete and there are many other drugs that can interact with venlafaxine. Tell your doctor about all medications you use. This includes prescription, over-the-counter, vitamin, and herbal products. Do not start a new medication without telling your doctor.
Where can I get more information?
Your pharmacist can provide more information about venlafaxine.
Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.
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