On this page · 5 sections

Covera-HS (Oral)

Generic name: verapamil

Brand names: Calan, Calan SR, Covera-HS, Isoptin SR, Verelan, Verelan PM

Last updated October 30, 2025 0 views
Share

Uses for Covera-HS

Verapamil is used on its own or with other medicines to treat heart rhythm problems, severe chest pain (angina), or high blood pressure (hypertension). High blood pressure makes the heart and arteries work harder. If it lasts a long time, it can lead to problems with how the heart and arteries work. This can harm the blood vessels in the brain, heart, and kidneys, which may result in a stroke, heart failure, or kidney failure. High blood pressure can also raise the risk of heart attacks. Controlling blood pressure may help reduce the chances of these issues.

Verapamil is a calcium channel blocker. It works by changing how calcium moves into the cells of the heart and blood vessels. This causes verapamil to relax blood vessels and increase the blood and oxygen supply to the heart while lowering its workload.

This medicine is available only with your doctor's prescription.

This section was rewritten for readability and reviewed for meaning.

Precautions while using Covera-HS

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.

Low blood pressure (hypotension) may occur while taking this medicine. Check with your doctor right away if you have the following symptoms: blurred vision; confusion; severe dizziness, faintness, or lightheadedness when getting up from a lying or sitting position suddenly; sweating; or unusual tiredness or weakness.

While you are taking this medicine, be careful to limit the amount of alcohol that you drink. Alcohol increases dizziness and drowsiness and also lowers blood pressure.

This section was rewritten for readability and reviewed for meaning.

Before using Covera-HS

In deciding to use a medicine, you and your doctor must consider the risks of taking it against the benefits it may provide. Here are some important points to think about:

Allergies

Inform your doctor if you have ever experienced any unusual or allergic reactions to this medicine or any other medications. Also, let your healthcare provider know about any other allergies you may have, such as to foods, dyes, preservatives, or animals. For over-the-counter products, read the label or package ingredients carefully.

Pediatric

Studies have not been done to determine how verapamil affects children. Its safety and effectiveness for this age group have not been established.

Geriatric

Current studies have not shown any specific problems in older adults that would limit the use of verapamil. However, older patients are more likely to have heart, liver, or kidney issues related to aging, which may require a dose adjustment for those taking verapamil.

Breast Feeding

There are not enough studies in women to determine the risk to infants when using this medication while breastfeeding. Consider the potential benefits and risks before taking this medication during breastfeeding.

Interactions with Medicines

Some medicines should not be taken together at all, while others may be used together even if an interaction could happen. In such cases, your doctor may adjust the dose or take other precautions. It is very important that your healthcare provider knows if you are taking any of the medicines listed below. The interactions listed here are based on their potential significance but are not all-inclusive.

Using this medicine with any of the following medicines is not recommended. Your doctor may decide not to prescribe this medication or may change other medicines you are taking.

  • Colchicine
  • Dofetilide
  • Eliglustat
  • Flibanserin
  • Lomitapide

Using this medicine with any of the following medicines is usually not recommended, but may be necessary in some cases. If both medicines are prescribed, your doctor may adjust the dose or frequency of one or both medicines.

  • Abametapir
  • Acalabrutinib
  • Acebutolol
  • Adenosine
  • Afatinib
  • Alfentanil
  • Alprazolam
  • Amiodarone
  • Apixaban
  • Aprepitant
  • Atazanavir
  • Atenolol
  • Atorvastatin
  • Avapritinib
  • Benzhydrocodone
  • Berotralstat
  • Betaxolol
  • Betrixaban
  • Bisoprolol
  • Bosutinib
  • Brexpiprazole
  • Brigatinib
  • Bupivacaine
  • Bupivacaine Liposome
  • Buprenorphine
  • Carbamazepine
  • Carteolol
  • Carvedilol
  • Celiprolol
  • Ceritinib
  • Cilostazol
  • Clarithromycin
  • Clonidine
  • Clopidogrel
  • Clozapine
  • Cobicistat
  • Cobimetinib
  • Codeine
  • Conivaptan
  • Cyclobenzaprine
  • Dabigatran Etexilate
  • Dantrolene
  • Daridorexant
  • Darunavir
  • Deflazacort
  • Digoxin
  • Dihydrocodeine
  • Domperidone
  • Doxorubicin
  • Doxorubicin Hydrochloride Liposome
  • Dronedarone
  • Edoxaban
  • Elacestrant
  • Elexacaftor
  • Encorafenib
  • Entrectinib
  • Epirubicin
  • Eplerenone
  • Erythromycin
  • Esmolol
  • Everolimus
  • Fedratinib
  • Fentanyl
  • Fexinidazole
  • Finerenone
  • Fingolimod
  • Fluconazole
  • Fosaprepitant
  • Fosnetupitant
  • Gepirone
  • Hydrocodone
  • Ibrutinib
  • Ifosfamide
  • Infigratinib
  • Itraconazole
  • Ivabradine
  • Ivacaftor
  • Ivosidenib
  • Ketoconazole
  • Labetalol
  • Lacosamide
  • Larotrectinib
  • Lefamulin
  • Lemborexant
  • Levobunolol
  • Lovastatin
  • Lumateperone
  • Lurasidone
  • Lurbinectedin
  • Mavacamten
  • Melphalan
  • Meperidine
  • Mepivacaine
  • Methadone
  • Metipranolol
  • Metoprolol
  • Mitapivat
  • Mobocertinib
  • Morphine
  • Morphine Sulfate Liposome
  • Nadolol
  • Naloxegol
  • Nebivolol
  • Neratinib
  • Netupitant
  • Nilotinib
  • Olaparib
  • Omaveloxolone
  • Oxprenolol
  • Oxycodone
  • Pacritinib
  • Palbociclib
  • Palovarotene
  • Pemigatinib
  • Penbutolol
  • Pentazocine
  • Pexidartinib
  • Phenobarbital
  • Pindolol
  • Piperaquine
  • Pixantrone
  • Ponesimod
  • Pralsetinib
  • Primidone
  • Propranolol
  • Ranolazine
  • Relugolix
  • Rimegepant
  • Rivaroxaban
  • Selpercatinib
  • Selumetinib
  • Simeprevir
  • Simvastatin
  • Siponimod
  • Sirolimus
  • Sirolimus Protein-Bound
  • Sonidegib
  • Sotalol
  • Sparsentan
  • Sufentanil
  • Tacrolimus
  • Talazoparib
  • Tazemetostat
  • Temsirolimus
  • Tenofovir Alafenamide
  • Tezacaftor
  • Timolol
  • Tizanidine
  • Tolvaptan
  • Topotecan
  • Tramadol
  • Ubrogepant
  • Venetoclax
  • Venlafaxine
  • Vincristine
  • Vincristine Sulfate Liposome
  • Voclosporin
  • Zanubrutinib
  • Zolpidem

Using this medicine with any of the following may increase the risk of certain side effects, but it may still be necessary to use both medicines. If both are prescribed, your doctor may adjust the dose or frequency of one or both medicines.

  • Amlodipine
  • Buspirone
  • Cyclosporine
  • Dalfopristin
  • Digitoxin
  • Dutasteride
  • Flecainide
  • Fosphenytoin
  • Indinavir
  • Lithium
  • Metformin
  • Midazolam
  • Nevirapine
  • Oxcarbazepine
  • Pancuronium
  • Phenytoin
  • Quinidine
  • Quinupristin
  • Rifapentine
  • St John's Wort
  • Suvorexant
  • Tedisamil
  • Telithromycin
  • Tubocurarine
  • Vecuronium

Interactions with Food/Tobacco/Alcohol

Some medicines should not be taken while eating or with certain foods, as interactions may occur. Mixing alcohol or tobacco with some medicines can also cause interactions. The interactions listed here are based on their potential significance but are not all-inclusive.

Using this medicine with any of the following is usually not recommended, but may be unavoidable in certain situations. If used together, your doctor may adjust the dose or frequency of this medicine or provide specific instructions regarding food, alcohol, or tobacco use.

  • Tobacco

Using this medicine with any of the following may increase the risk of certain side effects, but may be necessary in some situations. If both are used together, your doctor may change the dose or how often you use this medicine or give you specific instructions about food, alcohol, or tobacco use.

  • Ethanol
  • Grapefruit Juice

Other Medical Problems

Having other medical conditions may affect how you can use this medicine. Be sure to tell your doctor about any other medical issues, especially:

  • Congestive heart failure or
  • Muscle diseases (like Duchenne's muscular dystrophy or myasthenia gravis) or
  • Pulmonary edema (fluid in the lungs)—Use with caution. This may worsen these conditions.
  • Heart block (a type of abnormal heart rhythm) or
  • Heart problems (like Wolff-Parkinson-White syndrome or Lown-Ganong-Levine syndrome) or
  • Low blood pressure (hypotension) or
  • Sick sinus syndrome (a heart rhythm problem, can use if you have a properly working pacemaker)—Should not be used in patients with these conditions.
  • Kidney problems or
  • Liver problems—Use with caution. The effects may be stronger because the medicine is removed from the body more slowly.

This section was rewritten for readability and reviewed for meaning.

Side Effects of Covera-HS

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may happen, if they do, they may need medical attention.

Check with your doctor immediately if any of the following side effects occur:

Less common

  • Blue lips and fingernails
  • blurred vision
  • burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
  • chest pain
  • confusion
  • coughing that sometimes produces a pink frothy sputum
  • difficult, fast, noisy breathing, sometimes with wheezing
  • dizziness, faintness, or lightheadedness when getting up from a lying or sitting position suddenly
  • increased sweating
  • lightheadedness, dizziness, or fainting
  • pale skin
  • shortness of breath
  • slow or irregular heartbeat
  • sore throat
  • sweating
  • swelling in legs and ankles
  • unusual tiredness or weakness

Rare

  • Chills
  • cold sweats
  • feeling of warmth
  • redness of the face, neck, arms and occasionally, upper chest

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common

  • Difficulty having a bowel movement (stool)
  • headache

Less common

  • Acid or sour stomach
  • belching
  • difficulty in moving
  • heartburn
  • indigestion
  • joint pain
  • muscle aching or cramping
  • muscle pains or stiffness
  • nausea
  • rash
  • stomach discomfort, upset, or pain
  • trouble sleeping
  • unusual drowsiness, dullness, tiredness, weakness, or feeling of sluggishness
  • swollen joints

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

In the U.S.

  • Calan
  • Calan SR
  • Covera-HS
  • Isoptin SR
  • Verelan
  • Verelan PM

Available Dosage Forms:

  • Tablet
  • Tablet, Extended Release
  • Capsule, Extended Release

Therapeutic Class: Cardiovascular Agent

Pharmacologic Class: Calcium Channel Blocker

Chemical Class: Phenylalkylamine

This section was rewritten for readability and reviewed for meaning.

Proper use of Covera-HS

In addition to the use of this medicine, treatment for your high blood pressure may include weight control and changes in the types of foods you eat, especially foods high in sodium. Your doctor will tell you which of these are most important for you. You should check with your doctor before changing your diet.

Many patients who have high blood pressure will not notice any signs of the problem. In fact, many may feel normal. It is very important that you take your medicine exactly as directed and that you keep your appointments with your doctor even if you feel well.

Remember that this medicine will not cure your high blood pressure, but it does help control it. You must continue to take it as directed if you expect to lower your blood pressure and keep it down. You may have to take high blood pressure medicine for the rest of your life. If high blood pressure is not treated, it can cause serious problems such as heart failure, blood vessel disease, stroke, or kidney disease.

Swallow the extended-release tablet whole with a full glass of water. Do not break, crush, or chew it. It is best to take this medicine with food.

If you cannot swallow the verapamil extended-release capsules, you may open it and sprinkle the pellets contained in the capsule on one tablespoon of applesauce. This mixture must be swallowed immediately with a glass of cool water. The applesauce should not be hot and should be soft enough to be swallowed without chewing. Do not chew or crush the pellets.

If you are taking the extended-release tablets, you may sometimes notice what looks like a tablet in your stool. This is the empty tablet shell that is left after the medicine has been absorbed.

Dosing

The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.

The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.

  • For chest pain: For oral dosage form (tablets): Adults—The usual dose is 80 to 120 milligrams (mg) three times a day. Your doctor may adjust your dose if needed. Children—Use and dose must be determined by your doctor. For oral dosage form (extended-release tablets, 24 hr): Adults—At first, 180 milligrams (mg) once daily at bedtime. Your doctor may adjust your dose if needed. Children—Use and dose must be determined by your doctor.
  • For heart rhythm problems:For oral dosage form (tablets): Adults—The total usual dose is 240 to 480 milligrams (mg) divided in three or four equal doses per day. Children—Use and dose must be determined by your doctor.
  • For high blood pressure: For oral dosage form (tablets): Adults—At first, 80 milligrams (mg) three times a day. Your doctor may adjust your dose if needed. Children—Use and dose must be determined by your doctor. For oral dosage form (extended-release capsules): Adults—At first, 200 milligrams (mg) once daily at bedtime. Your doctor may adjust your dose if needed. Children—Use and dose must be determined by your doctor. For oral dosage form (extended-release tablets): Adults—At first, 180 milligrams (mg) once daily in the morning. Your doctor may adjust your dose if needed. Children—Use and dose must be determined by your doctor. For oral dosage form (extended-release tablets, 24 hr): Adults—At first, 180 milligrams (mg) once daily at bedtime. Your doctor may adjust your dose if needed. Children—Use and dose must be determined by your doctor.

Missed Dose

If you miss a dose of this medicine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses.

Storage

Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Keep from freezing.

Keep out of the reach of children.

Do not keep outdated medicine or medicine no longer needed.

Ask your healthcare professional how you should dispose of any medicine you do not use.

Related medicines

Before you take this medicine: the information on this page is general and may not cover your personal circumstances. Read the label supplied with your medicine and ask a pharmacist or doctor if you are unsure, especially if you are pregnant, breastfeeding, taking other medicines or managing a long-term condition.
General medicine information Consumer-friendly language

Content is provided for education and is not medical advice. See our medical disclaimer.