Mexiletine HCL

Mexiletine HCL
Mexiletine HCL
Mexiletine HCL is a medication commonly used to treat abnormal heart rhythms. It works by reducing the occurrence and severity of irregular heartbeat, improving the overall heart function and reducing the risk of cardiac events.
Active Ingredient: Mexiletine HCL
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Side Effects

Nausea, vomiting, heartburn, dizziness, lightheadedness, vision problems (such as blurred vision), headache, shaking, nervousness, or problems with muscle control (coordination difficulties) may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly.

Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Tell your doctor right away if you have any serious side effects, including: worsening symptoms of heart failure (such as shortness of breath, swelling ankles/feet, unusual tiredness, unusual/sudden weight gain), signs of liver problems (such as nausea/vomiting that doesn't stop, stomach/abdominal pain, yellowing eyes/skin, dark urine).

Get medical help right away if you have any very serious side effects, including: chest pain, seizure.

A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: fever, swollen lymph nodes, rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.

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

In the US – Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.

In Canada – Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

Uses

This medication is used to treat certain types of serious (possibly fatal) irregular heartbeat (such as sustained ventricular tachycardia). It is used to restore normal heart rhythm and maintain a regular, steady heartbeat. Mexiletine is known as an anti-arrhythmic drug. It works by blocking certain electrical signals in the heart that can cause an irregular heartbeat. Treating an irregular heartbeat can decrease the risk for blood clots, and this effect can reduce your risk of heart attack or stroke.

How to use Mexiletine HCL

Take this medication by mouth with a full glass of water (8 ounces/240 milliliters and food or an antacid, usually 2 to 3 times daily or exactly as directed by your doctor. Taking this medication with food or an antacid helps to decrease certain side effects (nausea, heartburn). Ask your pharmacist if you have questions about which antacids to use with this medication.

Dosage is based on your age, liver function, medical condition, and response to treatment.

Use this medication regularly to get the most benefit from it. To help you remember, take it at the same times each day.

Tell your doctor if your condition does not improve or if it worsens.

Warnings

Though this medication often gives great benefits to people with irregular heartbeat, it may rarely cause a serious new irregular heartbeat. When starting treatment with this drug, your doctor may recommend that you stay in the hospital for proper monitoring. Talk with your doctor about the benefits and risks of taking this medication for your condition.

Interactions

Drug interactions may change how your medications 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 prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.

Some products that may interact with this drug are: caffeine, fezolinetant, theophylline, drugs that may affect the acid level of urine (such as sodium bicarbonate, large doses of vitamin C).

Other medications can affect the removal of mexiletine from your body, which may affect how mexiletine works. Examples include cimetidine, fluvoxamine, propafenone, anti-seizure drugs (such as phenytoin, phenobarbital), among others.

    Precautions

    Before taking mexiletine, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

    Before using this medication, tell your doctor or pharmacist your medical history, especially of: other heart problems (such as heart failure, slow heartbeat, previous heart attack), liver problems, seizure disorder.

    This drug may make you dizzy or blur your vision. Alcohol or marijuana (cannabis) can make you more dizzy. Do not drive, use machinery, or do anything that needs alertness or clear vision until you can do it safely. Limit alcoholic beverages. Talk to your doctor if you are using marijuana (cannabis).

    During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor.

    This medication passes into breast milk. However, this drug is unlikely to harm a nursing infant. Consult your doctor before breast-feeding.

    Overdose

    If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center. Symptoms of overdose may include: drowsiness, confusion, fainting, seizures.

    Do not share this medication with others.

    Lab and/or medical tests (such as EKG, blood pressure) should be done while you are taking this medication. Keep all medical and lab appointments. Consult your doctor for more details.

    If you miss a dose, take it as soon as you remember. If it is near the time of the next dose, skip the missed dose. Take your next dose at the regular time. 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.

    Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.

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