Overview and Quick Facts

  • Active ingredient: Venlafaxine (extended-release)
  • Therapeutic class: SNRI antidepressant
  • Primary uses: Major depressive disorder, generalized anxiety disorder, social anxiety disorder, panic disorder
  • Common strengths: 37.5 mg, 75 mg, 150 mg XR capsules or tablets
  • Also called: Effexor XR (brand), venlafaxine ER/XR (generic)
  • Related conditions for this page: Anxiety, depression, panic symptoms

Effexor XR helps balance brain chemicals that influence mood and anxiety. It is taken once daily and should be swallowed whole. For safety tips on combining Effexor XR with other medicines, see Interactions.

Before You Start

Tell your health care provider about your health history and everything you take, including over-the-counter products and supplements. This helps prevent serious reactions such as serotonin syndrome or increased bleeding risk.

Share the following with your clinician:

  • Any history of bipolar disorder or mania
  • Current or past seizures
  • Eye pressure problems such as glaucoma
  • Kidney or liver disease
  • High cholesterol or treatment for high cholesterol
  • High blood pressure, heart rhythm issues, or recent heart attack
  • Eating disorders, anorexia, or significant weight loss
  • Thyroid disorders
  • Suicidal thoughts, prior suicide attempts, or worsening depression
  • Allergies to venlafaxine or other medicines, foods, dyes, or preservatives
  • Pregnancy, plans to become pregnant, or breastfeeding

Use in children and adolescents requires special consideration. Discuss risks and benefits with a pediatric specialist. For ongoing safety checks during therapy, see What To Watch For.

How To Take Effexor XR

  • Swallow the capsule or extended-release tablet whole with water; do not crush, split, or chew.
  • Take with food, at about the same time each day.
  • Do not change your dose or stop suddenly without medical advice. Your clinician may taper the dose to avoid withdrawal symptoms.
  • Typical strengths available: 37.5 mg, 75 mg, 150 mg. Your exact dose depends on your diagnosis and response.

Note: This prescription is for you only. Do not share it with anyone else.

Missed Dose

If you forget a dose, take it when remembered unless it is close to your next scheduled dose. If it is almost time for the next dose, skip the missed one and resume your regular schedule. Do not take extra doses to make up for a missed dose.

Overdose

Call emergency services or a poison control center right away if you may have taken too much. Overdose can cause severe symptoms such as abnormal heart rhythm, severe drowsiness, seizures, or changes in blood pressure.

Drug and Food Interactions

Some combinations can be dangerous. Always provide a full list of medicines and supplements to every health care professional you see. Items below are examples and not a complete list.

Do NOT combine with these:

  • MAO inhibitors: phenelzine (Nardil), tranylcypromine (Parnate), isocarboxazid (Marplan), selegiline (Eldepryl, EMSAM). Allow at least 14 days between an MAOI and venlafaxine.
  • Linezolid or methylene blue given systemically (risk of serotonin syndrome)
  • Nefazodone
  • St. John's wort or tryptophan supplements
  • Medicines marketed for appetite or weight loss
  • Duloxetine (another SNRI) unless directed by a specialist
  • Procarbazine

May interact or require dose changes/monitoring:

  • SSRIs, SNRIs, tricyclics, antipsychotics, or other psychiatric medicines
  • Migraine triptans: sumatriptan, rizatriptan, eletriptan, zolmitriptan, naratriptan, almotriptan, frovatriptan
  • Tramadol or dextromethorphan (raise serotonin syndrome risk)
  • Blood thinners and antiplatelets: warfarin, apixaban, enoxaparin, dalteparin, aspirin, clopidogrel; plus NSAIDs like ibuprofen or naproxen (higher bleeding risk)
  • Cimetidine (can increase venlafaxine levels)
  • Medicines for blood pressure or heart rhythm
  • Ritonavir or other strong CYP inhibitors
  • Amphetamine or dextroamphetamine

Alcohol can intensify drowsiness or dizziness and is best avoided. If you develop restlessness, agitation, sweating, tremor, fast heart rate, confusion, or muscle stiffness, seek urgent help for possible serotonin syndrome and review this list again at Interactions.

What To Watch For During Treatment

  • It may take 2 to 4 weeks to feel clear improvement; some symptoms can improve sooner.
  • Monitor blood pressure and heart rate, as venlafaxine can raise both in some patients.
  • Watch for mood or behavior changes, including worsening depression or suicidal thoughts, especially when starting or changing the dose.
  • Drowsiness, dizziness, or blurred vision can occur. Do not drive or operate machinery until you know how you respond.
  • Standing up slowly can help reduce lightheadedness or fainting, particularly in older adults.
  • Dry mouth is common; try sugar-free gum or candy and maintain good hydration.
  • Avoid self-treating colds, coughs, or allergies without asking your clinician; certain ingredients can interact.

Possible Side Effects

Seek medical advice for side effects that concern you. Some effects are serious and need urgent care.

Serious - contact a clinician at once:

  • Seizures
  • Allergic reaction: rash, hives, itching, swelling of face, lips, or tongue
  • New or worsening suicidal thoughts or unusual behavior changes
  • Hallucinations or loss of contact with reality
  • Vision changes or eye pain
  • Trouble passing urine or major change in urine amount
  • Unusual bleeding or bruising
  • Shortness of breath or breathing problems

Common - often improve with time:

  • Nausea or reduced appetite
  • Constipation
  • Tremor
  • Increased sweating
  • Changes in sexual desire or performance
  • Mild weight loss

This is not a full list of side effects. Report persistent or severe symptoms to your health care professional.

Storage

  • Keep out of reach of children.
  • Store in a dry place at 20 to 25 C (68 to 77 F).
  • Do not use after the expiration date; dispose of properly.

For tips on safe disposal, ask a pharmacist or see FDA drug take-back options. To review how to take your dose properly, return to How To Take Effexor XR.

Alternatives and Similar Medicines

Response to antidepressants varies. If Effexor XR is not a good fit, clinicians may consider alternatives with similar or different mechanisms.

Similar class (SNRIs):

  • Desvenlafaxine (Pristiq) - metabolite of venlafaxine; once daily
  • Duloxetine (Cymbalta) - also treats some pain conditions such as neuropathy
  • Levomilnacipran (Fetzima) - primarily for major depression

Other common antidepressants:

  • SSRIs: sertraline, escitalopram, fluoxetine, paroxetine, citalopram
  • Atypicals: bupropion (may be more activating, less sexual side effects), mirtazapine (often more sedating, can increase appetite)
  • Tricyclics and MAOIs: usually second-line due to side effect profiles and interaction concerns

Choice depends on symptoms, prior response, side effect preferences, other health conditions, and potential interactions. Discuss with your prescriber; see also Prices in USD for a cost comparison.

Typical Prices in the USA (USD)

Approximate out-of-pocket retail prices for a 30-day supply (may vary by pharmacy, location, dose, insurance, and coupons):

  • Venlafaxine XR generic (75 mg to 150 mg): about $8 to $25
  • Effexor XR brand: about $350 to $500
  • Desvenlafaxine generic: roughly $15 to $60; Pristiq brand: $400 to $550
  • Duloxetine generic: about $4 to $20; Cymbalta brand: $350 to $550
  • SSRIs (sertraline, fluoxetine, escitalopram, citalopram) generics: about $3 to $15
  • Bupropion XL generic: about $5 to $20
  • Mirtazapine generic: about $4 to $15

Tip: Prices can drop substantially with discount programs or mail-order pharmacies. Always compare pharmacies and ask about generics.

Short FAQs

What is Effexor XR?

An extended-release form of venlafaxine, an SNRI used for depression and anxiety conditions.

How long until it works?

Some people notice changes within 1 to 2 weeks; full effect may take 4 to 6 weeks. Continue as prescribed and follow up with your clinician.

Can I stop suddenly?

No. Sudden discontinuation can cause withdrawal symptoms. Work with your prescriber on a slow taper. See How To Take Effexor XR.

What should I avoid?

Avoid alcohol and do not combine with MAOIs, St. John's wort, or certain other serotonergic medicines. Review the full list at Interactions.