Sular is a calcium channel blocker that is used to treat high blood pressure (hypertension) in adults.

Sular may also be used for purposes not listed in this medication guide.

Follow all directions on your medicine label and package. Tell each of your healthcare providers about all your medical conditions, allergies, and all medicines you use.

Follow all directions on your prescription label and read all medication guides or instruction sheets. Your doctor may occasionally change your dose. Use the medicine exactly as directed.

Take Sular on an empty stomach, at least 1 hour before or 2 hours after a meal.

Swallow the tablet whole and do not crush, chew, or break it.

Your blood pressure will need to be checked often.

Store at room temperature away from moisture, heat, and light.

Keep using all your blood pressure medications as directed, even if you feel well. Read all medication guides you receive. Do not change your dose or stop taking your medicine without your doctor's advice.

You should not use Sular if you are allergic to Sular or to similar medications such as amlodipine, felodipine, nicardipine, nifedipine, or nimodipine.

Tell your doctor if you have ever had:

• coronary artery disease;

• congestive heart failure;

• liver disease;

• an allergy to yellow food dye; or

• asthma, or a severe allergic reaction (sneezing, runny or stuffy nose, wheezing, shortness of breath) after taking aspirin.

Older adults may be more sensitive to the effects of this medicine.

It is not known whether this medicine will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant.

You should not breastfeed while using Sular.

Take the medicine as soon as you can, but skip the missed dose if it is almost time for your next dose. Do not take two doses at one time.

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

Grapefruit may interact with Sular and lead to unwanted side effects. Avoid the use of grapefruit products.

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Sular may cause serious side effects. Call your doctor at once if you have:

• a light-headed feeling, like you might pass out;

• chest pain or pressure, pain spreading to your jaw or shoulder;

• swelling in your hands or feet;

• flushing (sudden warmth, redness, or tingly feeling);

• fast heartbeats; or

• sudden numbness or weakness, problems with vision or speech.

You may have new or worsening chest pain when you first start taking Sular or whenever your dose is changed.

Common side effects of Sular may include:

• swelling;

• headache;

• dizziness; or

• flushing.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Sometimes it is not safe to use certain medications at the same time. Some drugs can affect your blood levels of other drugs you take, which may increase side effects or make the medications less effective.

Tell your doctor about all your current medicines and any you start or stop using, especially any other blood pressure medicines.

Many drugs can affect Sular. This includes prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible interactions are listed here. Tell your doctor about all your current medicines and any medicine you start or stop using.