Generic Isoptin (Verapamil)
Isoptin is a calcium channel blocker, it treats high blood pressure relaxing and widening blood vessels.
Per Pills
40 mg x 60 pills
40 mg x 90 pills
Per Pills
120 mg x 30 pills
120 mg x 60 pills
120 mg x 90 pills
Per Pills
240 mg x 30 pills
240 mg x 60 pills
240 mg x 90 pills
Product Description
Drugs known to be Isoptin of the cytochrome P system include: phenobarbital, phenytoin, Isopton. Combined use is not recommended. Studies in female rats at daily dietary doses up to 5. This is not a complete list of side effects and others may occur. The most commonly reported side effects include constipationdizziness, and headache. In patients with an increased response to verapamil, e. This website uses cookies. Effects on laboratory tests. In another study Isoptin septal strips isolated from the left ventricle of 5 patients with mitral disease, the S enantiomer was 8 times more potent than the R enantiomer in reducing myocardial contractility. Adults: Initially, 80 mg immediate-release P. Lie down if you feel faint or dizzy. These ophthalmological changes were not seen in a second study. Tell your healthcare provider right away if you experience any of the following symptoms of an irregular heartbeat, medically known as an arrhythmia: fast or slow heart beat skipping beats lightheadedness or dizziness chest pain shortness of breath sweating Verapamil can cause dizziness. Verapamil is also a Kv voltage gated potassium channel blocker. Make sure that any leftover portion is disposed of safely. Explore Apps. All rights reserved. This material is provided for educational purposes only and is not intended for medical advice, diagnosis or treatment. Do not crush or chew Isoptin SR tablets. Drug Class. If you take too much Isoptin, you may have a slow heartbeat, chest pain, feel very faint or collapse; however, if you are taking Isoptin SR sustained release tablets the medicine is released into the blood over an extended period of time, so you may not notice these symptoms immediately. Onset of action is 1—2 hours after oral dosage. Seizures occurred rarely with IV administration. Isoptin Cautionary Labels Back to Top. Ispptin Verapamil may inhibit the clearance and increase the plasma levels of theophylline. Isoptin and Lactation Back to Top. This may have been caused by colchicine crossing the blood brain barrier due to CYP3A and P-gp inhibition by verapamil. If you are being treated for angina, Izoptin your doctor if you Ioptin to have angina attacks or if they become more frequent while you are using Isoptin. Verapamil causes dose-related suppression of the SA node. Isoptin 80 mg: White, biconvex film sIoptin tablet embossed "Isoptin 80" on the front and "Knoll" above the score on the back. Isoptin SR is available for oral administration as light green, capsule shaped, scored, film-coated tablets containing mg verapamil hydrochloride and as light pink, capsule shaped, scored, film-coated tablets containing mg verapamil hydrochloride. Nitrates, Diuretics: No cardiovascular adverse effects have been attributed to any interaction between these agents and verapamil. Treatment: Treatment of overdosage should be supportive. Combined use is not recommended. Other direct oral anticoagulants DOACs. As CGRP-release is controlled by voltage-gated calcium channels. This applies all the more at the start of treatment, when the dose is raised, when switching from another drug and in conjunction with alcohol. Stay alert for hyperglycemia in diabetic patients. Back Submit. Other side effects not listed above may occur in some patients. Dizziness, light-headedness or fainting may occur, especially when you get up quickly. AV block is treated with atropine and cardiac pacing. It is very important that your doctor check your progress at regular visits to make sure this medicine is working properly and to check for unwanted effects. You may report side effects to the FDA at Carbamazepine: The concomitant oral administration of verapamil and carbamazepine may potentiate the effects of carbamazepine neurotoxicity. Alanine aminotransferase, alkaline phosphatase, aspartate aminotransferase, blood urea nitrogen, glucose, lactate dehydrogenase: increased levels. The applesauce should be swallowed immediately without chewing and followed with a glass of cool water to ensure complete swallowing of the beads. An overdose of Isoptin SR can be fatal. Action And Clinical Pharmacology: Verapamil is a calcium ion influx inhibitor calcium entry blocker Isoptin calcium ion antagonist that exerts its pharmacological effects by modulating the influx of ionic calcium across the cell membrane of the arterial smooth muscle as well as in conducting and contractile myocardial cells. Log in Log in All fields are required. In hypertensive normolipidemic patients, verapamil had no effects on plasma lipoprotein fractions. Take the missed dose as soon as you remember. In particular tell your doctor if you are taking any of the following medicines: Medicines to treat heart problems or high blood pressure: Beta-blockers e. Asystole in patients other than those with sick sinus syndrome is usually of short duration few seconds or lesswith spontaneous return to AV nodal or normal sinus rhythm. Use in renal impairment. This list is not complete and many other drugs can interact with Isoptin SR. You should not use Isoptin SR if you are allergic to it, or if you have a serious heart condition such as:. Do not give Isoptin to anyone else, even if they have the same condition as you. A treatment with this medication requires regular monitoring by a doctor. Dose adjustments may be done based on your condition, severity of your condition, response to the medication, age, liver function, kidney function, and other medications you are taking. In patients with angina or arrhythmias using antihypertensive drugs, this additional hypotensive effect should be taken Isoptin consideration. Theophylline: Verapamil may inhibit the clearance and increase the plasma levels of theophylline. Verapamil is also used in cell biology as an inhibitor of drug efflux pump proteins such as P-glycoprotein and other ABC transporter proteins. Protect from light and moisture. Do not double the next dose to catch up. Blockers Amiloride Benzamil Triamterene. Covera-HS verapamil. IUPAC name. In case of overdosage with large amounts of Isoptin SR, it should be noted that the release of the active drug and the absorption in the intestine may take more than 48 hours. A decreased dosage should be used in patients with hepatic insufficiency and careful monitoring for abnormal prolongation of the PR interval or other signs of excessive pharmacologic effect should be carried out see Pharmacology, Pharmacokinetics and Dosage. Verapamil exerts antihypertensive effects by inducing vasodilation and reducing peripheral vascular resistance usually without reflex tachycardia.
Common use

Isoptin is a Ca2+-channel blocker which relaxes (widens) veins and arteries, which makes it easier for the heart to pump and this way Isoptin reduces its workload. Calcium triggers contraction of smooth muscles and when its entrance to the myocytes, it results in relaxation of the arterial muscles, improved oxygen delivery to the myocardial tissue, and decreased total peripheral resistance, systemic blood pressure, and after-load. Isoptin also decreases the conduction of electrical impulses through the heart that control the coordination of contraction, this slows the rate of contraction. Isoptin is used to treat hypertension, to treat angina, control some types of irregular heartbeats.

Dosage and direction

Take orally with or without food. Daily dose is 180-480 mg which may be taken as a single dose or divided in two or three intakes. Take exactly as prescribed by your doctor, never exceed the dose recommended to you.


Avoid drinking alcoholic beverages, grapefruit juice or eating grapefruit. Alcohol is able worsen side effects of Isoptin (drowsiness and dizziness) while grapefruit interacts with components of the drug. Do not get up too fast from a sitting or lying position as you may feel dizzy.


Isoptin is contraindicated in patients with hypersensitivity to components of the medication, severe left ventricular dysfunction, hypotension (systolic pressure less than 90 mm Hg) or cardiogenic shock, sick sinus syndrome (except in patients with a functioning artificial ventricular pacemaker), atrioventricular block degree II-III (except in patients with a functioning artificial ventricular pacemaker), atrial flutter or atrial fibrillation and an accessory bypass tract (Wolff-Parkinson-White, Lown-Ganong-Levine syndromes).

Side effects

Arpamyl is usually well tolerated. Most common side effects include dizziness, weakness or fainting, swelling of the lower extremities, rash, headache, and constipation. Jaundice, swelling, difficulty breathing, rashes are also possible. If you experience severe side effects listed above seek for immediate medical attention.

Drug interaction

Isoptin inhibits elimination of alcohol, increases the efficacy of doxorubicin both in tissue culture systems and in patients. Cyclophosphamide, oncovin, procarbazine, prednisone (COPP) and the vindesine, adriamycin, cisplatin (VAC) cytotoxic drug regimens are able to decrease absorption of Isoptin. Co-administration of Isoptin with aspiring in rare cases increases risk of bleeding. Correction of digoxin dosage is important in patients treated with Isoptin. Chronic verapamil treatment can increase serum digoxin levels by 50% to 75% during the first week of therapy leading to digitalis toxicity. Co-administration with oral antihypertensive agents results in additive effects. Inform your doctor about all medications you take, especially about Disopyramide, Flecainide, Quinidine, Phenobarbital, Cyclosporin, medications which contain lithium. This medication may change results of certain liver tests to mildly abnormal.

Missed dose

Take the dose you forgot as soon as you remember. If it is almost time for your next intake just skip the next dose and return to your regular schedule.


If you experience slow heartbeat and fainting, they may be symptoms of overdose. Seek for immediate medical attention if you suppose that too much of Isoptin was taken.


Store at room temperature 15-30 C (59-86 F) away from light, moisture, pets and children.


We provide only general information about medications which does not cover all directions, possible drug integrations, or precautions. Information at the site cannot be used for self-treatment and self-diagnosis. Any specific instructions for a particular patient should be agreed with your health care adviser or doctor in charge of the case. We disclaim reliability of this information and mistakes it could contain. We are not responsible for any direct, indirect, special or other indirect damage as a result of any use of the information on this site and also for consequences of self-treatment.

Antibiotics is one of most prescribed group of medications. Antibiotics are antibacterial (antimicrobial agents) that kills bacteria(bactericidal) or stop the growth of the bacteria(bacteriostatic action).

Antibiotics are used to treat bacterial infections and are not indicated for the viral infections. Currently there is a big variety of antibiotics available. All the antibiotics are divided into two main groups according to the action mechanism:

  • Antibiotics with bactericidal action(penicillins, cephalosporins, aminoglycoside)
  • Antibacterial with bacteriostatic action(macrolides, tetracyclines)

Penicillins and cephalospororins are the most prescribed group of antibiotics. They belong to half-synthetic beta lactam antibiotics. These antibiotics work by inhibiting the enzymes responsible for the production of peptidoglycan. Peptidoglycan is a biopolimer that is a main structural component of the bacterial cell wall. The blockage of peptidoglycan synthesis leads to the lysis of the microorganisms.

Another group of preparations are aminoglycosides. However, these antibiotics are prescribed in rare cases. The most of aminoglycosides possesses nephrotoxicity, ototoxicity and cab cause neuromuscular blockage. Bactericidal action of aminoglycosides is related to the interfering with the synthesis of proteins on the ribisomes in the microbial cells. When aminoglycosides are used with penicillins and cephalosporins the sinergism against gram-positive and gram-negative microorganisms is observed.

Among all bacteriostatic antibiotics macrolides and tetracyclines are the most indicated groups. Therapeutic effect of macrolides is associated with inhibiting the synthesis of proteins on the ribosomes in the microbial cell. As usual macrolides exert bacteriostatic action, however in high amounts are able to exert bactericidal action on some microorganisms. Besides antibacterial action, some macrolides possesses immunomodulatory and anti-inflammatory action.

Another group of bacteriostatic antibiotics are used less frequently as many microorganisms became resistant to the this type of antibiotics. Bacteriostatic effect of the tetracyclines is associated with inhibiting the synthesis of proteins. Tetracycline are indicated in clamydia infections, rickettsial disease, some zoonosis, severe acne.

Antibiotics are indicated and used only in the cases of the bacteria is sensitive to the antibiotics. There some specific tests like antibiogram that will help to determine the right antibiotic and corresponding dose.