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Isoptin (Verapamil Hydrochloride) and/or alternatives

Brand Name Options
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    Marketed as Isoptin in New Zealand

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Please note that the country, manufacturer, and/or shipping country may vary depending on availability. All trademarks and registered trademarks are the property of their respective owners.

General Information On Isoptin

Isoptin is used for the treatment of angina (chest pain), hypertension (high blood pressure), and certain types of abnormal rapid heart rhythms. This drug belongs to a group of medicines called calcium channel blockers (CCBs). Like other drugs in its group, Isoptin or Verapamil works by preventing the entry of calcium in the coronary artery and other blood vessels. Calcium is the substance that causes the contraction of arterial walls, which, in turn, causes chest pain, high blood pressure, and fast/irregular heartbeat.

Side Effects for Isoptin

Common and less serious side effects of Isoptin are: rashes, itching, nausea, tiredness, mild dizziness, mild headache, and constipation. Continue to use the medicine as directed by your doctor even if you experience any of these symptoms. However, you should consult your doctor if any of the aforementioned symptoms persist or worsen.

Less common, but serious side effects of this drug are: unusually slow or fast heartbeat, severe or persistent nausea/headache, sudden and unexplained weight gain, fever, sore throat, shortness of breath, pain in the abdominal area, dark colored urine, black or tarry stools, symptoms of jaundice (eye or skin becoming yellow), and loss of appetite.

In rare cases, Verapamil may trigger a serious allergic reaction. Stop using the medication and seek emergency medical help if you notice: breathing problems, hives, and itching/swelling of the face, throat, tongue, or lips.

Precautions

You should not use this drug if: (1) you have recently suffered a heart attack, (2) you are allergic to it, (3) you suffer from certain heart ailments (such as sick sinus syndrome), and (4) you have hypotension (low blood pressure). Also, remember to inform your doctor about your medical history, especially if you have a history of heart failure, kidney disease, neuromuscular disease, and liver disease.

It is unclear whether this medicine can harm an unborn child. So, if you are pregnant or planning to become pregnant during treatment, then you must first consult your doctor. As this drug is excreted into breast milk, nursing mothers should first consult their doctor before taking this medicine.

Isoptin Dosage

You must take this drug as directed by your doctor. The usual dosage is Isoptin 180-480 mg per day.

Interactions

There are many drugs that may interact with this medicine, such as: beta-blocker drugs (Blocadren, Tenormin, Ziac, Zebeta, InnoPran, Toprol, Inderal, Lopressor, Sotalol, and others), lovastatin (Advicor and others), simvastatin (Vytorin, Simcor, Zocor), cancer medicines (Cytoxan, Oncovin, Matulane, Adriamycin, Platinol, Matulane, Neosar, and others), HIV/AIDS drugs (Norvir, Rescriptor, Viracept, Crixivan, Lexiva, Kaletra, and others), clonidine (Clorpres), digoxin (Lanoxicaps, digitals, Lanoxin), antifungal medicines (Vfend, Diflucan, Sporanox, Xolegal, Ketozole, Extina, and others), theophylline (Uniphyl, Elixophyllin, and others), cyclosporine (Sandimmune, Neoral, and others), sedatives (Versed, Halcion), certain antibiotics (Biaxin, Ketek, Rifadin, E-Mycin, Rimactane, Ery-Tab, Rifater, Erythrocin, and others), seizure medications (Solfoton, Tegretol , Carbatrol), and lithium (LithoBid).

The aforementioned list is only a partial list of drugs that can interact with this medicine. Before you buy Isoptin, inform your doctor about all the medications, including prescription-based, over-the-counter, and herbal drugs that you are using.

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