Sharing this information can help you avoid potential interactions. If you have questions about drug interactions that may affect you, ask your doctor or pharmacist. And, you should not take an MAOI antidepressant until at least 7 days have passed since you stopped taking venlafaxine ER oral capsules. In addition to those listed just above, other drugs may interact with venlafaxine ER oral capsules.
These drugs include:. Taking certain herbs and supplements with venlafaxine ER oral capsules can increase your risk for a serious side effect called serotonin syndrome. Examples of herbs and supplements that can increase this include:.
If you have any questions about eating certain foods with venlafaxine, talk with your doctor. Venlafaxine can cause false-positive results on urine drug tests for phencyclidine PCP and amphetamines , including methamphetamine. Your urine can also test positive for these drugs for several days after you stop taking venlafaxine. If you have a positive result for PCP or amphetamines on a urine test, a different type of test can be done to rule out the use of these drugs.
However, adults who took venlafaxine during the studies commonly reported a loss of appetite. If you lose your appetite, it could lead to weight loss over time.
Depression and anxiety disorders , which venlafaxine treats, often cause changes in appetite and eating patterns. And both can lead to either weight gain or weight loss. Yes, venlafaxine is sometimes used for hot flashes , migraine , and attention deficit hyperactivity disorder ADHD. But these are off-label uses for this drug. Off-label drug use means using a drug for a purpose other than those that have been approved. In females, venlafaxine is used off-label to treat hot flashes due to menopause or the use of certain breast cancer treatments.
If you suddenly stop taking it, you may have withdrawal symptoms. Doing so allows your body to adjust to not having the medication.
And it can help you avoid withdrawal symptoms. SSRIs are a class of antidepressants. They work by increasing levels of a chemical in your brain called serotonin. Venlafaxine, on the other hand, belongs to a class of antidepressants called serotonin-norepinephrine reuptake inhibitors SNRIs. SNRIs work by increasing levels of two chemicals in your brain: serotonin and norepinephrine.
The drug works over a long period of time to help balance chemicals in your brain. Over time, this helps you get back to feeling like yourself again. Yes, you might. You doctor may screen you for certain conditions before prescribing venlafaxine for you. For example, if you have depression , your doctor may screen you for bipolar disorder before prescribing venlafaxine.
Sometimes an episode of depression is the first symptom of bipolar disorder. But if venlafaxine is used on its own to treat depression in someone with bipolar disorder, it could trigger mania. Your doctor will talk with you about any past mental health conditions you or your close family members have had. You may also need to have blood tests from time to time to check your cholesterol level. This is because venlafaxine may affect your blood pressure and cholesterol.
Extended-release drugs release their medication slowly in your body. Venlafaxine ER oral capsules contain pellets of medication that have a special coating around them. This coating releases the medication slowly over the day as the pellets pass through your digestive system. The pellets themselves may not fully dissolve. But by the time they leave your body in stool, all of the medication will have been released and absorbed by your body. Venlafaxine ER oral capsules may also be used off-label for other conditions.
GAD is both a common and serious mental health condition. It can significantly affect your daily life. With GAD you have excessive and ongoing worries, fears, or concerns about everyday life.
Symptoms of GAD may include:. SAD is also known as social phobia. With this condition, you have intense worries and fears about social situations or performing in front of people. SAD can cause you to avoid certain situations or being around people who cause you anxiety. SAD can significantly affect your daily life and your ability to form relationships with people.
Venlafaxine ER oral capsules are FDA-approved to treat panic disorder , with or without agoraphobia , in adults. Panic disorder is both a common and serious mental health condition. It can have a significant impact on your daily life. With panic disorder, you have recurrent unexpected panic attacks. Fear of having a panic attack can make you avoid places or situations that you think might trigger one. This can lead to agoraphobia. Agoraphobia is an intense fear of situations where you think it would be difficult to leave or get help if you have a panic attack.
Examples of these situations may include using public transport, being in a crowd, being in open or closed spaces, or leaving home by yourself. Venlafaxine ER oral capsules are an effective treatment for panic disorder.
MDD is usually called depression , or sometimes, clinical depression. MDD can happen without any obvious reason, or it may be triggered by life events, such as losing someone close to you. Venlafaxine ER oral capsules are an effective treatment for depression. Venlafaxine may increase the risk of suicidal thoughts and actions in children. On rare occasions, doctors may prescribe this drug off-label for certain children.
These chemicals, serotonin and norepinephrine , are called neurotransmitters. Neurotransmitters are natural chemicals in your body that help pass messages between your nerve cells. Serotonin and norepinephrine are involved in passing messages that affect your mood, emotions, perceptions, and behaviors. Venlafaxine belongs to a class of drugs called serotonin norepinephrine reuptake inhibitors SNRIs.
How a drug works is called its mechanism of action. This can cause your body to process drugs more slowly. As a result, more of a drug stays in your body for a longer time. This raises your risk of side effects.
Older adults may be at higher risk than younger people for low sodium levels in their blood when taking venlafaxine. For children: This drug should not be used in people younger than 18 years of age. All possible dosages and drug forms may not be included here. Your dosage, drug form, and how often you take the drug will depend on:. People with liver problems: People with mild to moderate liver problems should take about half of the typical dose.
People with severe liver disease or cirrhosis may need an even lower dosage. Your doctor can tell you more. People who are on dialysis should take half of the typical dosage. However, because drugs affect each person differently, we cannot guarantee that this list includes all possible dosages. Always to speak with your doctor or pharmacist about dosages that are right for you.
Venlafaxine oral tablet is used for long-term treatment. Do not stop venlafaxine without talking to your doctor. Stopping venlafaxine too quickly can cause serious symptoms such as:. If this happens, your doctor may have you start taking venlafaxine again and decrease your dosage slowly. For this drug to work well, a certain amount needs to be in your body at all times. If you take too much: You could have dangerous levels of the drug in your body.
This can lead to death. Symptoms of an overdose of this drug can include:. But if your symptoms are severe, call or go to the nearest emergency room right away. What to do if you miss a dose: Take your dose as soon as you remember. If you remember just a few hours before your next scheduled dose, take only one dose. Never try to catch up by taking two doses at once. This could result in dangerous side effects. How to tell if the drug is working: The symptoms of your depression or anxiety should be less severe or happen less often.
A prescription for this medication is refillable. You should not need a new prescription for this medication to be refilled. Your doctor will write the number of refills authorized on your prescription.
Not every pharmacy stocks this drug. When filling your prescription, be sure to call ahead to make sure your pharmacy carries it. Many insurance companies require a prior authorization for this drug.
This means your doctor may need to get approval from your insurance company before your insurance company will pay for the prescription. There are other drugs available to treat your condition. Some may be better suited for you than others. Talk to your doctor about other drug options that may work for you.
Disclaimer: Healthline has made every effort to make certain that all information is factually correct, comprehensive, and up-to-date. However, this article should not be used as a substitute for the knowledge and expertise of a licensed healthcare professional. Store it at room temperature and away from excess heat and moisture not in the bathroom.
It is important to keep all medication out of sight and reach of children as many containers such as weekly pill minders and those for eye drops, creams, patches, and inhalers are not child-resistant and young children can open them easily. To protect young children from poisoning, always lock safety caps and immediately place the medication in a safe location — one that is up and away and out of their sight and reach.
Unneeded medications should be disposed of in special ways to ensure that pets, children, and other people cannot consume them.
However, you should not flush this medication down the toilet. Instead, the best way to dispose of your medication is through a medicine take-back program. In case of overdose, call the poison control helpline at If the victim has collapsed, had a seizure, has trouble breathing, or can't be awakened, immediately call emergency services at Keep all appointments with your doctor and the laboratory.
Your doctor will check your blood pressure often and order certain lab tests to check your response to venlafaxine. Do not let anyone else take your medication. Ask your pharmacist any questions you have about refilling your prescription.
It is important for you to keep a written list of all of the prescription and nonprescription over-the-counter medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.
Generic alternatives may be available. Venlafaxine pronounced as ven' la fax een. Why is this medication prescribed? How should this medicine be used? Other uses for this medicine What special precautions should I follow?
What special dietary instructions should I follow? What should I do if I forget a dose? What side effects can this medication cause? What should I know about storage and disposal of this medication?
Brand names. If you will be taking this medicine for a long time, it is very important that your doctor check you at regular visits. This will allow your doctor to see if the medicine is working properly and to decide if you should continue to take it. Do not start taking venlafaxine during the 14 days after you stop a MAO inhibitor and wait 7 days after stopping venlafaxine before you start taking a MAO inhibitor.
If you take them together or do not wait the proper amount of time, you may develop confusion, agitation, restlessness, stomach or intestinal symptoms, a sudden high body temperature, an extremely high blood pressure, or severe seizures.
Venlafaxine may cause a serious condition called serotonin syndrome if taken together with certain medicines. Check with your doctor first before taking any other medicines with venlafaxine. This medicine may cause some teenagers and young adults to be agitated, irritable, or display other abnormal behaviors. It may also cause some people to have suicidal thoughts and tendencies or to become more depressed.
Some people may have trouble sleeping, get upset easily, have a big increase in energy, or start to act reckless. If you or your caregiver notice any of these unwanted effects, tell your doctor right away. Let the doctor know if you or anyone in your family has bipolar disorder manic-depressive or has tried to commit suicide.
Do not suddenly stop taking this medicine without checking first with your doctor. Your doctor may want you to gradually reduce the amount you are taking before stopping it completely. This will decrease the chance of side effects, such as agitation, confusion, headache, irritability, numbness or tingling feeling, restlessness, trouble sleeping, or unusual drowsiness or weakness. This medicine may cause hyponatremia low sodium in the blood. This is more common in elderly patients, those who take diuretic medicines, or those who have a low amount of fluid in the body due to severe diarrhea or vomiting.
Check with your doctor right away if you have a headache, trouble concentrating, memory problems, confusion, weakness, or feel unsteady when standing. Venlafaxine may increase your risk for bleeding problems.
Tell your doctor right away if you are having chest pain or discomfort, dry cough, fever, general feeling of tiredness or weakness, skin rash, or trouble breathing with this medicine.
These might be symptoms of a serious lung problem, including interstitial lung disease and eosinophilic pneumonia. Venlafaxine may cause some people to become drowsy or have blurred vision.
Make sure you know how you react to this medicine before you drive, use machines, or do anything else that could be dangerous if you are not alert or able to see clearly.
It is best to avoid alcohol with venlafaxine. Before you have any medical tests, tell the medical doctor in charge that you are taking this medicine. The results of some tests may be affected by this medicine. Check with your doctor right away if you have decreased interest in sexual intercourse, delayed or inability to have and orgasm in women, inability to have or keep an erection in men, or loss in sexual ability, desire, drive, or performance.
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