Effexor Oral : Uses, Side Effects, Interactions

Effexor Tablet

GENERIC NAME(S): Venlafaxine


Venlafaxine, sold under the brand name Effexor among others. Effexor is used to treat depression. It can improve the level of your mood and energy, and can help restore your interest in daily life. Effexor is known as a serotonin-norepinephrine reuptake inhibitor (SNRI). It helps in restoring the balance of some natural substances (serotonin and norepinephrine) in the brain.

How To Use Effexor Tablet

Before starting the use of Effexor or Venlafaxine, read the medication guide provided by your pharmacist and every time you get a refill. If you have any questions, ask your doctor or pharmacist.

Take this medicine guided by your doctor, usually daily with food 2 to 3 times.

Dosage is based on your medical condition and treatment response. To reduce your risk of side effects, your doctor may direct you to start this medication on low dose and gradually increase your dose. Follow your doctor’s instructions carefully. Take this medication regularly to get the most benefit of it. To help you remember, take it every day at the same time.

It is important to continue Effexor, even if you feel OK. Do not stop taking this medicine without consultation with your doctor. When this medicine suddenly stops, some conditions may get worse. Apart from this, you can experience symptoms such as delusions, mood swings, headache, fatigue, changes in sleep and brief emotions similar to electric shock. You may need to reduce your dose gradually to reduce side effects. Report any new or deteriorating symptoms instantly.

It may take several weeks to realize the benefits of this drug. Tell your doctor if your condition persists or worsens.

Side Effects

See also the warning section.

Nausea, drowsiness, dizziness, dry mouth, constipation, loss of appetite, blurred vision, anxiety, sleepiness, abnormal sweating or yawning. If any of these effects persists or worsens, tell your doctor immediately.

Remember that your doctor has prescribed this drug because he or she has decided that the benefit is higher than the risk of side effects. Many people using this drug do not have serious side effects.

Effexor can increase your blood pressure. Check your blood pressure regularly and tell your doctor if the results are high.

Tell your doctor immediately if there is no possibility of these, but there are serious side effects: easy injury / bleeding, reduced interest in sex, changes in sexual ability, muscle spasms / weakness, shaking (tremors).

Get medical help immediately if any of these are rare but serious illness which does not go away, shortness of breath, chest pain, severe / severe headache, black / bloody diarrhea, vomiting coffee grounds, eye pain / swelling Looks like / red, wide mannequin, vision change (see rainbow around night lights), seizure.

Effexor can increase serotonin and rarely cause a very serious condition, which is called serotonin syndrome / toxicity. The risk increases if you are taking other medicines that increase the serotonin, so tell your doctor or pharmacist about all the medicines that you take (see the drug interaction section). Get medical help immediately when some of the following symptoms develop: Fast heartbeats, hallucinations, loss of coordination, severe dizziness, severe nausea / vomiting / diarrhea, muscle shaking, unexplained fever, abnormal movement or restlessness

A very serious allergic reaction to this drug is rare. However, if you see symptoms of a serious allergic reaction, get medical help immediately, including: granular, itching / swelling (especially the face / tongue / throat), severe dizziness, trouble breathing.

This is not a complete list of possible side effects. If you do not list other effects above, contact your doctor or pharmacist.

In America – Call your doctor for medical advice about side effects. You can notify the FDA of side effects on 1-800-FDA-1088 or www.fda.gov/medwatch.

In Canada – Call your doctor for medical advice about side effects. You can report the health effects of Canada on 1-866-234-2345.


Before taking Effexor or Venlafaxine, tell your doctor or pharmacist whether you are allergic to it; Or for desvenlafaxine; Or if you have any other allergens. This product can have passive elements, which can cause allergic or other problems. Talk to your pharmacist for more details.

Before using this drug, tell your doctor or pharmacist your medical history, in particular: the problem of bleeding, personal or family history of glaucoma (angle-off type), high blood pressure, heart problems (e.g. heart failure , Back heart attack), high cholesterol, kidney disease, liver disease, seizures disorder, thyroid disease.

Effexor can make you feel dizzy or depressed or blurred your vision. Alcohol or marijuana can make you more dizzy or deaf. Unless you can safely do it, do not drive, use machinery, or do anything that requires caution or clear vision. Avoid alcoholic beverages. If you are using marijuana, talk to your doctor.

Before surgery, tell your doctor or dentist about all the products that you use (including prescription drugs, nonprescription drugs and herbal products).

Older adults may be more susceptible to the side effects of this drug, particularly dizziness when standing and bleeding. In older adults, there may be a possibility of developing a type of salt imbalance (hyponatremia), especially if they are taking “water pills” (diuretics). Danger and the imbalance of salt can increase the risk of falling.

Children may be more susceptible to the side effects of medication, especially less appetite and weight loss. Monitor weight and height in children taking this medicine.

During pregnancy, this drug should be used only when it is clearly necessary. It can harm an unborn child. Also, mothers who have used this medicine during the last 3 months of pregnancy, children born in them may rarely develop symptoms of withdrawal such as feeding / difficulty breathing, visits, muscles Cramping or crying constantly. If you see any of these symptoms in your newborn, then tell the doctor immediately.

Since untreated mental / mood problems (such as depression, anxiety, panic attacks) can be a serious condition, so do not stop taking this medicine unless directed by your doctor. If you are planning a pregnancy, become pregnant, or think that you may be pregnant, discuss the benefits and risks of using your medicine right away during your pregnancy.

Effexor passes in breast milk and can have an undesirable effect on the nursing infant. Consult your doctor before breastfeeding.


Drug interactions can change how your medicines work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescriptions / non-prescription medicines and herbal products) and share it with your doctor and pharmacist. Do not start, stop or change any drug supplements without the approval of your doctor.

Some products that can interact with this drug include: Other medicines that can cause bleeding / bruising (including antiplatelet drugs such as clopidogrel, NSAIDs such as ibuprofen/naproxen, “blood thinners” such as dabigatran/warfarin).

Aspirin can increase the risk of bleeding when used with this drug. However, if your doctor has directed you to take low-dose aspirin for the prevention of heart attack or stroke (usually on a diet of 81-325 mg in a day), then you should continue it when Until your doctor does not give you directions. Ask your doctor or pharmacist for more information.

Taking the MAO inhibitor with this drug can be a cause of serious (potentially fatal) drug interactions. During treatment with this drug, avoid taking the MAO inhibitor (isocarboxazid, linezolid, methylene blue, moclobemide, phenelzine, procarbazine, rasagiline, safinamide, selegiline, tranylcypromine). Most MAO inhibitors should not be taken for two weeks before treatment with at least 7 days for this medication. Ask your doctor when to start or stop this medication.

If you are taking other medicines that increase serotonin then the risk of serotonin syndrome / toxicity increases. Examples include MDMA / “ecstasy,” St. John’s wort, certain antidepressants (including SSRIs such as fluoxetine/paroxetine, other SNRIs such as duloxetine/milnacipran), tryptophan, among others. The risk of serotonin syndrome / toxicity can be higher when you start or increase the dose of these medicines.

Tell your doctor or pharmacist whether you are taking other products, due to opiate pain or cough relief (such as codeine, hydrocodone), alcohol, marijuana, sleep or anxiety medications (such as alprazolam, lorazepam, zolpidem), muscle relaxants (such as carisoprodolcyclobenzaprine), or antihistamines (such as cetirizinediphenhydramine).

Check the label on all your drugs (such as allergy or cough-and-cold products), because they may contain ingredients that cause drowsiness. Ask your pharmacist about using those products safely.

Effexor is very similar to desvenlafaxine. Do not consume medicines while using Effexor.

This drug can interfere with some laboratory tests (including urine test for amphetamines), possibly due to false test results. Make sure lab workers and all your doctors know that you use this medicine.

Over Dose

If someone is treated and has serious symptoms like having trouble going out or breathing, call 911. Otherwise, call the Poison Control Center immediately, residents of the US can call their local venom control center at 1-800-222-1222. Canadians can call a provincial poison control center. Symptoms of overdose may include: severe drowsiness, seizures, fast / irregular heart beat.


Do not share this medication with others.

Keep all regular medical and psychiatric appointments. Laboratory and / or medical tests (such as blood pressure, cholesterol) should be periodically monitoring your progress or checking the side effects. Consult your doctor for more details.

Missed Dose

If you miss a dose, then as soon as you remember, take it. If it is near the next dose time, then leave the thesis supplement and start your normal dose program again. Do not double the dose to catch up.


Store at room temperature away from light and moisture. Do not store in the bathroom. Keep all medications away from children and pets.

Until instructed not to do so, do not flush the medicines in the toilet and do not drain in the drain. When this period expires or does not need it, then properly release this product. Consult your pharmacist or local waste disposal company.

Disclaimer: DrLinex has made every effort to ensure that all information is factually accurate, comprehensive and up-to-date. However, this article should not be used as a licensed health care professional’s choice of knowledge and expertise. You should always consult your doctor or other health care professional before taking any medication. The information given here is subject to change and it has not been used to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions or adverse effects. The lack of warning or other information for any drug does not indicate that the combination of medicine or medication is safe, effective or appropriate for all patients or all specific uses.

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