Desvenlafaxine Succinate ER Side Effects
What should I watch for?
Tell your doctor if your symptoms do not get better or if they get worse. Visit your doctor or health care professional for regular checks on your progress. Because it may take several weeks to see the full effects of this medicine, it is important to continue your treatment as prescribed by your doctor.
Patients and their families should watch out for new or worsening thoughts of suicide or depression. Also watch out for sudden changes in feelings such as feeling anxious, agitated, panicky, irritable, hostile, aggressive, impulsive, severely restless, overly excited and hyperactive, or not being able to sleep. If this happens, especially at the beginning of treatment or after a change in dose, call your health care professional.
This medicine can cause an increase in blood pressure. Check with your doctor for instructions on monitoring your blood pressure while taking this medicine.
You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol may interfere with the effect of this medicine. Avoid alcoholic drinks.
Your mouth may get dry. Chewing sugarless gum, sucking hard candy and drinking plenty of water will help. Contact your doctor if the problem does not go away or is severe.
Common and Rare Side Effects
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur:
dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
fast, pounding, or irregular pulse
numbness or tingling in the arms or legs
shakiness in the legs, arms, hands, or feet
trouble thinking, speaking, or walking
Incidence not known
Blistering, peeling, or loosening of the skin
blood in the stool or urine
dilated or enlarged pupils (black part of the eye)
joint pain, stiffness, or swelling
large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
loss of bladder control
muscle spasm or jerking of all extremities
red skin lesions, often with a purple center
red, irritated eyes
sores, ulcers, or white spots in the mouth or on the lips
sudden loss of consciousness
swelling of the eyelids, face, lips, hands, or feet
talking, feeling, or acting with excitement
trouble breathing or swallowing
unusual tiredness or weakness
Get emergency help immediately if any of the following symptoms of overdose occur:
Symptoms of overdose
feeling of constant movement of self or surroundings
irregular heartbeat recurrent
muscle cramp or stiffness
sensation of spinning
yellow eyes or skin
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
inability to have an orgasm
inability to have or keep an erection
increased sensitivity of the eyes to light
loss of sexual ability, desire, drive, or performance
sleepiness or unusual drowsiness
Change in taste
continuous ringing, buzzing, or other unexplained noise in the ears
fear or nervousness
lack or loss of strength
loss of taste
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.