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Doctor insights on: Does Effexor Cause Constipation

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I've been on 75 mg of Effexor (venlafaxine) for gad for 3 wks. Some side-effects (constipation, lowered appetite), but no reduction in anxiety. Give it more time?

I've been on 75 mg of Effexor (venlafaxine) for gad for 3 wks. Some side-effects (constipation, lowered appetite), but no reduction in anxiety. Give it more time?

They say 6-8 wks: The time to maximal symptom reduction varies greatly. Early relief may be mostly placebo effect, but the great bulk of users agree that full function can be as long as 6-8 weeks. So, if you can tolerate the side effects, give it more time. But do talk with your doctor so both of you know what's happening and what to expect. Consider a talk therapist too since many mds have so little time. Best! ...Read more

Dr. Krishna Kumar
518 doctors shared insights

Venlafaxine (Definition)

It belong to classification of snri antidepressant also help anxiety start slow go slow its approved for depression and anxiety disorder there are some common side effects important never stop suddenly always taper slowly if you ever ...Read more


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Besides constipation, only side-effect of Effexor (venlafaxine) (150mg for GAD) is vivid, anxiety-provoking dreams. Gone from 1 biweekly to daily! Lower dose?

Besides constipation, only side-effect of Effexor (venlafaxine) (150mg for GAD) is vivid, anxiety-provoking dreams. Gone from  1 biweekly to daily! Lower dose?

Anxiety, Aging: I understand your Anxiety. At age 65, many people go through Anxiety due to aging, medical problems, loss of loved ones, loneliness, neglect from children, retirement and finances. Effexor (venlafaxine) can cause constipation and abnormal dreams. Sprycel and Flomax can cause insomnia. Lack of effectiveness with Effexor (venlafaxine) 150mg/day indicates need to see a Psychiatrist for Therapy, other medications, Relaxation. ...Read more

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Is it possible to be weaned off the Effexor and get my body back to normal? I have been taking Effexor for years. A doctor recently increased my dosage to 300mg from 75mg. I have major digestive issues (constipation), i can't loose weight no matter what i

Is it possible to be weaned off the Effexor and get my body back to normal? I have been taking Effexor for years. A doctor recently increased my dosage to 300mg from 75mg. I have major digestive issues (constipation), i can't loose weight no matter what i

Serotonin : Serotonin discontinuation symptoms, associated with abrupt discontinuation of Effexor (venlafaxine) , could be related to it`s short half life. In most cases, this may be minimized by slowly tapering the dosage. Another strategy would be using a low dosage of a long acting ssri like fluoxetine.. The physical symptoms include problems with balance, gastrointestinal and flu-like symptoms, and sensory and sleep disturbances. Psychological symptoms include anxiety and/or agitation, crying spells, irritability and aggressiveness. ...Read more

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I take the generic for Effexor (venlafaxine) XR experience lots of side effects, dry mouth, sweating , muscle weakness, constipation. How can I prevent them?

I take the generic for Effexor (venlafaxine) XR experience lots of side effects, dry mouth, sweating , muscle weakness, constipation. How can I prevent them?

Side effects: I would discuss this with your dr as soon as possible and try to determine an alternative to the medication or a treatment for the symptoms that is compatible with the medication. ...Read more

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Ever since i started taking the generic for Effexor (venlafaxine) xr, i've been getting constipated all the time. I haven't changed my diet either. Help!

Talk to doctor: In my practice, most antidepressants, including Effexor (venlafaxine) xr, don't usually cause constipation. You need to carefully discuss this with your treating physician. There may be other general medical illnesses going on, medication interactions, and so on. Treatments for constipation are very effective once the causes are determined. Talk to your doctor. ...Read more

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Can Effexor (venlafaxine) XR cause trouble maintaining an erection?

Can Effexor (venlafaxine) XR cause trouble maintaining an erection?

Unfortunately yes: As in the range of 6% of men while have some element of erection issue and up to 20% of men can have an abnormality in ejaculation(as in delayed ejaculation or inability to ejaculate at all). ...Read more

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Could long term use of Effexor (venlafaxine) cause severe gastrointestinal problems?

Could long term use of Effexor (venlafaxine) cause severe gastrointestinal problems?

To date,: there are no long term effects of effexor (venlafaxine). It can cause GI effects- these are not severe symptoms, usually go away, and are limited to diarrhea or conversely in some patients, constipation; nausea, and rarely vomiting. Again it's usually early on. If you're suffering from severe gastrointestinal problems, you need to see your Primary care provider to have this checked. Good luck! ...Read more

Effexor (Definition)

Venlafaxine is a non-tricyclic which is a kind of serotonin-norepinephrine reuptake inhibiting drug (atypical anti-psychotic ...Read more


Dr. Eric Kaplan
2,390 doctors shared insights

Constipation (Definition)

Constipation is difficulty passing ...Read more