Skip to content
    Drugs & Medications

    nisoldipine

    NISOLDIPINE (10, 20, 30, OR 40 MG) SUSTAINED ACTION

    COMMON BRAND NAME(S): Sular

    GENERIC NAME(S): NISOLDIPINE

    Uses

    Nisoldipine is used with or without other medications to treat high blood pressure (hypertension). Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. Nisoldipine is called a calcium channel blocker. It works by relaxing blood vessels so blood can flow more easily.

    How to use nisoldipine

    Take this medication by mouth, usually once daily or as directed by your doctor. Take this medication on an empty stomach or with a low-fat meal. Do not take within 1 hour before or 2 hours after a high-fat meal. Doing so may increase side effects.

    Do not crush or chew this medication. Doing so can release all of the drug at once, increasing the risk of side effects. Also, do not split the tablets unless they have a score line and your doctor or pharmacist tells you to do so. Swallow the whole or split tablet without crushing or chewing.

    This medication comes in different sustained-action forms with different strengths. Check with your doctor or pharmacist that you are taking the correct dose and form. Do not take a different strength or form without checking with your doctor or pharmacist first.

    Avoid eating grapefruit or drinking grapefruit juice while using this medication unless your doctor instructs you otherwise. Grapefruit can increase the amount of certain medications in your bloodstream. Consult your doctor or pharmacist for more details.

    The dosage is based on your medical condition and response to treatment. Your doctor may gradually increase your dose. Follow your doctor's instructions carefully.

    Use this medication regularly to get the most benefit from it. To help you remember, take it at the same time each day. It is important to continue taking this medication even if you feel well. Most people with high blood pressure do not feel sick.

    Tell your doctor if your condition does not improve or if it worsens (for example, your routine blood pressure readings remain high or increase).

    Side Effects

    Dizziness, swelling ankles/feet, flushing, or headache may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.

    To reduce dizziness and lightheadedness, get up slowly when rising from a sitting or lying position.

    An empty tablet shell may appear in your stool. This effect is harmless because your body has already absorbed the medication.

    Remember that your doctor has prescribed this medication because he or she 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 any of these unlikely but serious side effects occur: fast/irregular/pounding heartbeat, fainting.

    Tell your doctor right away if any of these rare but very serious side effects occur: vision changes.

    Some people who already have severe heart disease may rarely develop worsening chest pain or a heart attack after starting this medication or increasing the dose. Get medical help right away if you experience: worsening chest pain, symptoms of a heart attack (such as chest/jaw/left arm pain, shortness of breath, unusual sweating).

    A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: 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.

    Precautions

    Before taking nisoldipine, tell your doctor or pharmacist if you are allergic to it; or to other dihydropyridine calcium channel blockers (such as amlodipine, nifedipine); 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.

    This medication should not be used if you have certain medical conditions. Before using this medicine, consult your doctor or pharmacist if you have: a certain structural heart problem (aortic stenosis).

    Before using this medication, tell your doctor or pharmacist your medical history, especially of: liver disease.

    This drug may make you dizzy. Do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such activities safely. Limit alcoholic beverages.

    Before having surgery, tell your doctor or dentist that you are taking this medication.

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

    It is not known if this medication passes into breast milk. Consult your doctor before breast-feeding.

    Interactions

    See also the How to Use section.

    Your doctor or pharmacist may already be aware of any possible drug interactions and may be monitoring you for them. Do not start, stop, or change the dosage of any medicine before checking with your doctor or pharmacist first.

    This drug should not be used with the following medication because a very serious interaction may occur: phenytoin.

    If you are currently using phenytoin, tell your doctor or pharmacist before starting nisoldipine.

    Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use.

    Other medications can affect the removal of nisoldipine from your body, which may affect how nisoldipine works. Examples include cimetidine, azole antifungals (such as itraconazole), macrolide antibiotics (such as erythromycin), rifamycins (such as rifabutin), St. John's wort, drugs used to treat seizures (such as carbamazepine, phenytoin), among others.

    Check the labels on all your medicines (such as cough-and-cold products, diet aids, nonsteroidal anti-inflammatory drugs-NSAIDs for pain/fever reduction) because they may contain ingredients that could increase your blood pressure or heart rate (such as pseudoephedrine, phenylephrine, ibuprofen, naproxen). Ask your pharmacist about using those products safely.

    Cimetidine is a nonprescription drug that is commonly used to treat extra stomach acid. Because cimetidine may interact with nisoldipine, ask your pharmacist about other products to treat stomach acid.

    This document does not contain all possible interactions. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share the list with your doctor and pharmacist.

    Overdose

    If overdose is suspected, contact a poison control center or emergency room 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.

    Notes

    Do not share this medication with others. Talk with your doctor about making lifestyle changes that may help this medication work better (such as stress reduction programs, exercise, and dietary changes).

    Laboratory and/or medical tests (such as liver function tests, heart exam, blood pressure) may be performed periodically to monitor your progress or check for side effects. Consult your doctor for more details.

    Have your blood pressure checked regularly while taking this medication. Learn how to monitor your own blood pressure at home, and share the results with your doctor.

    Missed Dose

    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 and resume your usual dosing schedule. Do not double the dose to catch up.

    Storage

    Store at room temperature between 68-77 degrees F (20-25 degrees C) away from light and moisture. Do not store in the bathroom. Keep all medicines 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 for more details about how to safely discard your product.

    Information last revised October 2015. Copyright(c) 2015 First Databank, Inc.

    Images

    SULAR ER 8.5 MG TABLET
    SULAR ER 8.5 MG TABLET
    View Larger Picture
    color
    oyster
    shape
    round
    imprint
    SCI 500
    NISOLDIPINE ER 8.5 MG TABLET
    NISOLDIPINE ER 8.5 MG TABLET
    View Larger Picture
    color
    beige
    shape
    round
    imprint
    M, NE 8
    SULAR ER 17 MG TABLET
    SULAR ER 17 MG TABLET
    View Larger Picture
    color
    yellow cream
    shape
    round
    imprint
    SCI 501
    NISOLDIPINE ER 17 MG TABLET
    NISOLDIPINE ER 17 MG TABLET
    View Larger Picture
    color
    yellow
    shape
    round
    imprint
    M, NE 17
    NISOLDIPINE ER 20 MG TABLET
    NISOLDIPINE ER 20 MG TABLET
    View Larger Picture
    color
    beige
    shape
    round
    imprint
    M, N 22
    NISOLDIPINE ER 25.5 MG TABLET
    NISOLDIPINE ER 25.5 MG TABLET
    View Larger Picture
    color
    light orange
    shape
    round
    imprint
    M, NE 25
    NISOLDIPINE ER 30 MG TABLET
    NISOLDIPINE ER 30 MG TABLET
    View Larger Picture
    color
    orange
    shape
    round
    imprint
    M, N 23
    SULAR ER 34 MG TABLET
    SULAR ER 34 MG TABLET
    View Larger Picture
    color
    burnt orange
    shape
    elliptical
    imprint
    SCI 503
    NISOLDIPINE ER 34 MG TABLET
    NISOLDIPINE ER 34 MG TABLET
    View Larger Picture
    color
    orange
    shape
    round
    imprint
    M, NE 34
    NISOLDIPINE ER 40 MG TABLET
    NISOLDIPINE ER 40 MG TABLET
    View Larger Picture
    color
    yellow
    shape
    round
    imprint
    M, N 24
    SULAR ER 8.5 MG TABLET
    SULAR ER 8.5 MG TABLET

    Identification

    color
    oyster
    shape
    round
    imprint
    SCI 500
    This medicine is a oyster, round, film-coated tablet imprinted with "SCI 500".
    NISOLDIPINE ER 8.5 MG TABLET
    NISOLDIPINE ER 8.5 MG TABLET

    Identification

    color
    beige
    shape
    round
    imprint
    M, NE 8
    This medicine is a beige, round, film-coated tablet imprinted with "M" and "NE 8".
    SULAR ER 17 MG TABLET
    SULAR ER 17 MG TABLET

    Identification

    color
    yellow cream
    shape
    round
    imprint
    SCI 501
    This medicine is a yellow cream, round, film-coated tablet imprinted with "SCI 501".
    NISOLDIPINE ER 17 MG TABLET
    NISOLDIPINE ER 17 MG TABLET

    Identification

    color
    yellow
    shape
    round
    imprint
    M, NE 17
    This medicine is a yellow, round, film-coated tablet imprinted with "M" and "NE 17".
    NISOLDIPINE ER 20 MG TABLET
    NISOLDIPINE ER 20 MG TABLET

    Identification

    color
    beige
    shape
    round
    imprint
    M, N 22
    This medicine is a beige, round, film-coated tablet imprinted with "M" and "N 22".
    NISOLDIPINE ER 25.5 MG TABLET
    NISOLDIPINE ER 25.5 MG TABLET

    Identification

    color
    light orange
    shape
    round
    imprint
    M, NE 25
    This medicine is a light orange, round, film-coated tablet imprinted with "M" and "NE 25".
    NISOLDIPINE ER 30 MG TABLET
    NISOLDIPINE ER 30 MG TABLET

    Identification

    color
    orange
    shape
    round
    imprint
    M, N 23
    This medicine is a orange, round, film-coated tablet imprinted with "M" and "N 23".
    SULAR ER 34 MG TABLET
    SULAR ER 34 MG TABLET

    Identification

    color
    burnt orange
    shape
    elliptical
    imprint
    SCI 503
    This medicine is a burnt orange, elliptical, film-coated tablet imprinted with "SCI 503".
    NISOLDIPINE ER 34 MG TABLET
    NISOLDIPINE ER 34 MG TABLET

    Identification

    color
    orange
    shape
    round
    imprint
    M, NE 34
    This medicine is a orange, round, film-coated tablet imprinted with "M" and "NE 34".
    NISOLDIPINE ER 40 MG TABLET
    NISOLDIPINE ER 40 MG TABLET

    Identification

    color
    yellow
    shape
    round
    imprint
    M, N 24
    This medicine is a yellow, round, film-coated tablet imprinted with "M" and "N 24".

    Add to Cabinet

    Add Adderall to my medicine cabinet.

    Did you know?

    With WebMD's Medicine Cabinet, you can check interactions with drugs.

    Go to medicine cabinet

    Selected from data included with permission and copyrighted by First Databank, Inc. This copyrighted material has been downloaded from a licensed data provider and is not for distribution, expect as may be authorized by the applicable terms of use.

    CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.

    More about Drugs and Medications

    Newsletters

    Subscribe to free WebMD newsletters.

    • WebMD Daily

      WebMD Daily

      Subscribe to the WebMD Daily, and you'll get today's top health news and trending topics, and the latest and best information from WebMD.

    • Men's Health

      Men's Health

      Subscribe to the Men's Health newsletter for the latest on disease prevention, fitness, sex, nutrition, and more from WebMD.

    • Women's Health

      Women's Health

      Subscribe to the Women's Health newsletter for the latest on disease prevention, fitness, sex, diet, anti-aging, and more from WebMD.

    By clicking Submit, I agree to the WebMD Terms & Conditions & Privacy Policy and understand that I may opt out of WebMD subscriptions at any time.

    URAC: Accredited Health Web Site TRUSTe online privacy certification HONcode Seal AdChoices