Why is Isoptin prescribed?

Verapamil (Isoptin) is prescribed for the treatment of hypertension that may cause atrial fibrillation, angina, myocardial infarction and other heart problems.

What does it do?

Verapamil, a Calcium channel blocker (CCB), is an anti-hypertensive agent that primarily works by inhibiting the reuptake of calcium channels in the arterial smooth muscles cell membrane; thus, reducing the workload, heart rate and relaxes the blood vessels causing smooth blood flow.

How should I take it?

Isoptin is available as a 240mg tablet that is intended for oral administration as a whole, not to be crushed or chewed and should be taken with or without food as directed by the doctor.

The dosage strength depends on every patient’s condition and the doctor’s prescription. It is strictly advised that you do not self-medicate and only take this drug after consulting with your doctor or pharmacist to determine the best dosage and dosing schedule for the treatment of your condition.

What if I missed a dose?

The desired effects of prescribed medications will only be achieved if taken properly. As much as possible, strictly follow your doctor’s prescribed dosing schedule. However, if you miss a dose, take it immediately and adjust the time of your next dose depending on your doctor’s advice. Never take two doses at the same time just to make up for your missed dose

What are the special precautions before taking Isoptin?

Before taking Verapamil, tell your doctor or pharmacist if you have any allergies to food or to the drug itself as it may contain several inactive ingredients, which can cause allergic reactions or problems.

Inform your doctor about your past and current medical history especially if you have or have had second or third degree atrioventricular block, sick sinus syndrome, muscular dystrophy, myasthenia gravis, congestive heart disease, aortic stenosis, low blood pressure, cirrhosis, kidney disease, diabetes and liver disease.

Avoid drinking alcohol as this may cause dizziness or drowsiness and can add to the effects of Verapamil.

Consult your doctor regarding all the other medications you use before getting a surgery.

For the drug label information of Isoptin, click here.

Does it have any side effects?

It is important to note that all drugs have corresponding side effects and adverse reactions. Additional information may be obtained when you ask your doctor or pharmacist.

Common side effects may include:
• Abdominal pain
• Dizziness
• Drowsiness
• Fatigue
• Headache
• Increased urination
• Insomnia
• Muscle cramps
• Rash
• Tingly feeling under the skin
• Weakness

Serious side effects may include:
• Dark colored urine
• Dyspnea
• Dysrhythmia
• Gynecomastia
• Jaundice
• Kidney calculus
• Lymphadenopathy
• Myocardial infarction
• Phlebitis
• Swelling of ankles and feet
• Syncope
• Worsening chest pain

Is it safe to take it with another drug?

Some drug interactions may cause serious or life-threatening reactions when administered together. Immediately inform your doctor if you are taking Isoptin with any of the following medications:

• Abametapir
• Abilify
• Acebutolol
• Alfuzosin
• Betaxolol
• Biaxin
• Buspirone
• Cilostazol
• Cimetidine
• Claritin
• Colchicine
• Concore
• Conivaptan
• Cordarone
• Cymbalta
• Dantrolene
• Dilantin
• Edoxaban
• Elavil
• Erythromycin
• Lanoxin
• Lipitor
• Luvox
• Mevacor
• Nizoral
• Norvasc
• Pimozide
• Plendil
• Pradaxa
• Prozac
• Ranolazine
• Samsca
• Serzone
• Tagamet
• Tenormin
• Valium
• Xanor
• Zocor

If you are using of any prescription, non-prescription and herbal medications, inform your doctor and pharmacist for proper information and ask for other possible interactions not listed within this section.

How should I store it?

Store Isoptin in room temperature (25 °C) in a clean environment away from light and moisture, as well as children and pets. Do not freeze or refrigerate. Do not remove the desiccant in the original container. Throw away if unused or expired. Do not flush in the toilet. Consult the pharmacist for proper disposal.

What action should I take in case of overdose?

If you suspect an overdose, immediately call an ambulance and seek immediate medical attention to prevent further complications.

Is it safe for pregnant or breastfeeding women?

There are only limited studies and data regarding the safety of Verapamil to determine drug-associated risks of major maternal defects, miscarriages and fetal outcomes.

The presence of Verapamil in human milk is still unknown. Consult with your doctor before breastfeeding.

The use of Verapamil in pregnant and breastfeeding women should be avoided unless the potential benefits outweigh the risks.

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