Venlafaxine ER mg or other strengths is an extended-release drug formulation. Venlafaxine HCL ER has fewer side effects than the brand name; however, it has no advantage over immediate-release formulation in reducing Effexor withdrawal effects.
Effexor half-life of the immediate-release formulation is five hours. In comparison, the extended-release formulation half-life is about 12 hours. Effexor XR is the sustained-released form of the substance. These capsules are only available as extended-release formulations. The original formula of the drug was discontinued from the US market because it was required for the patient to take 2 to 3 doses daily, while Effexor XR can be taken once daily. Moreover, it causes less nausea than the original formula.
Most commonly it is used in the form of extended-release capsules, which are sold under the brand name Effexor XR. These capsules contain 37,5mg, 75mg, or mg of the active ingredient. Doctors may also prescribe venlafaxine tablets, which are sold under the generic name. These are immediate-release tablets with the following strengths: 25mg, 37,5mg, 50mg, mg. The same generic variant also has extended-release oral tablets, with the strengths: 37,5mg, 75mg, mg, and mg.
Effexor capsules have a cylindrical shape, made from dissoluble gelatin, which contains venlafaxine powder. Capsules cannot be divided or cut into pieces. The capsule is grey at the top, and the lower part is of peach color.
The imprint on the upper part-reads W Effexor XR. The lower part has Pfizer manufactures this type of capsules. This is a peach capsule is 75mg in strength. Venlafaxine ER 75mg capsules present the usual starting dose for most patients with generalized anxiety disorder.
The imprint is printed in red with X Effexor XR on the upper part and 75 on the lower. The strength of such capsules is venlafaxine mg, which is a high dose. This capsule is red and has W Effexor XR imprinted on the upper part. This is an extended-release formulation containing venlafaxine The pill is white and round. It has an imprint of OS and below it. Upstate Pharma LLC supplies this type of tablet. Effexor side effects include constipation, insomnia, dry mouth, and fatigue.
Venlafaxine 75 mg is a mild dose of the medication. This formulation contains venlafaxine er mg, which is a strong dose. Withdrawal symptoms after taking such an amount long-term will be more pronounced. OS pill contains mg of the active ingredient. This is the strongest dose available, and it is not available in the form of Effexor capsules.
Effexor can cause weight gain or loss. The capsule with a red imprint W on the upper part is identified as a venlafaxine 75 mg capsule. This capsule contains venlafaxine mg , and is also an extended-release formulation.
It is orange and has the letter W and number imprinted. It is not recommended to combine Effexor and alcohol , because it can lead to the development of more adverse reactions. Moreover, alcohol potentiates symptoms of overdose, which can lead to increased lethality in such cases. The strength of this type of capsule is identified by the imprint on the lower part, which is The imprint on the upper part reads ZA It is an extended-release formulation of the generic drug.
The color of the ZA capsule is peach and white. It also has the dosage imprinted, being 75 mg. Inactive ingredients include sodium lauryl sulfate, ferrosoferric oxide, silicon dioxide, hypromelloses, cetostearyl alcohol, microcrystalline cellulose, magnesium silicate, gelatin, titanium dioxide, ferric oxide red.
This capsule contains venlafaxine mg. The upper part is red and has ZA imprinted. If they increase your dosage later, they will monitor you closely. For people with kidney disease: If you have kidney disease or a history of kidney disease, you may not be able to clear this drug from your body well. This may increase the levels of venlafaxine in your body. This can cause more side effects. Your doctor may start you on a low dosage and monitor you closely if they increase your dosage.
For people with hyperthyroidism: Hyperthyroidism can increase your heart rate. Venlafaxine can also increase your heart rate. If you have hyperthyroidism and take venlafaxine, your heart rate may increase to a dangerous level.
You are especially at risk if you take venlafaxine doses greater than mg per day. For people with a history of seizures: Venlafaxine raises your risk of seizures. If you have a seizure, stop taking venlafaxine and call your doctor right away.
For people with increased eye pressure glaucoma : Venlafaxine can widen your pupils and block the flow of fluid in your eye.
These effects can increase the pressure in your eyes. People with a history of increased eye pressure or glaucoma should have their eye pressure checked regularly while taking venlafaxine. Do not take venlafaxine if you have uncontrolled angle-closure glaucoma. For pregnant women: Venlafaxine is a category C pregnancy drug.
That means two things:. This drug should only be used if the potential benefit justifies the potential risk to the fetus. Call your doctor right away if you become pregnant while taking this drug. For women who are breastfeeding: Venlafaxine may pass into breast milk and cause side effects in a child who is breastfed. Talk to your doctor about breastfeeding your child. You may need to decide whether to stop breastfeeding or stop taking this medication. For seniors: The kidneys of older adults may not work as well as they used to.
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.
You should always consult your doctor or other healthcare professional before taking any medication. The drug information contained herein is subject to change and is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. The absence of warnings or other information for a given drug does not indicate that the drug or drug combination is safe, effective, or appropriate for all patients or all specific uses.
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