Dynacirc CR is available as 5 mg and 10 mg controlled release tablets.
Active ingredient: isradipine
Inactive ingredients: butylated hydroxytoluene, cellulose acetate, hypromellose, magnesium stearate, polyethylene glycol, polyethylene oxide, polysorbate 80, propylene glycol, red ferric oxide, silicon dioxide, sodium chloride, titanium dioxide, yellow ferric oxide
Serious side effects have been reported with Dynacirc CR. See the “Drug Precautions” section.
Common side effects of Dynacirc CR include:
- swelling (medically known as “edema”)
- headache
- dizziness
- fatigue
- upset stomach
- flushing
- constipation
- palpitations
- nausea
This is not a complete list of Dynacirc CR side effects. Ask your doctor or pharmacist for more information.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.
Tell your doctor about all the medicines you take including prescription and non-prescription medicines, vitamins, and herbal supplements. Especially tell your doctor if you take:
- propranolol (Inderal, Inderide)
- fentanyl (Abstral, Actiq, Fentora, Onsolis)
This is not a complete list of Dynacirc CR drug interactions. Ask your doctor or pharmacist for more information.
Serious side effects have been reported with Dynacirc CR including:
- congestive heart failure (CHF). Tell your healthcare provider right away if you experience any of the following symptoms of CHF:
- sudden weight gain
- worsening shortness of breath
- increased swelling of your feet, legs, or abdomen
- needing more pillows or sleeping in a recliner
- waking from sleep to catch your breath
- a cough that does not go away
- new or increasing irregularities in your heart rate
- hypotension. Hypotension, or low blood pressure, may cause you to feel faint or dizzy. Inadequate fluid intake, excessive sweating, diarrhea, or vomiting can lead to an excessive fall in blood pressure, too. Lie down if you feel faint or dizzy. Call your doctor right away.
Dynacirc CR can cause dizziness. Do not drive or operate heavy machinery until you know how Dynacirc CR affects you.
Do not take Dynacirc CR if you are allergic to Dynacirc CR or to any of this medication’s ingredients.
Before taking Dynacirc CR, tell your doctor about all of your medical conditions. Especially tell your doctor if you:
- have liver or kidney problems
- have heart problems
- have a narrowing of the gastrointestinal tract (includes the stomach, intestines, and colon)
- are pregnant or breastfeeding
Tell your doctor about all the medicines you take including prescription and non-prescription medicines, vitamins, and herbal supplements.
Store and dispense below 86˚F (30˚C) in a tight container, protected from moisture and humidity.
Keep this and all medicines out of the reach of children.
Take Dynacirc CR exactly as prescribed.
This medication comes in a controlled release tablet form and is taken once a day, with or without food.
Do not chew or swallow Dynacirc CR capsules.
Do not be concerned if you occasionally notice in your stool something resembling a tablet. This medication is made with a non-absorbable shell that has been specially designed to slowly release the drug for your body to absorb. When this process is completed, the empty tablet shell is passed into the stool.
If you miss a dose, take the missed dose as soon as you remember. If it is almost time for the next dose, skip the missed dose and take your next dose at the regular time. Do not take two doses of Dynacirc CR at the same time.
Dynacirc CR is a prescription medication used to treat high blood pressure, known medically as hypertension.
This medication may be prescribed for other uses. Ask your doctor or pharmacist for more information.
Dynacirc CR (generic: isradipine) is a prescription medication used to treat high blood pressure. Dynacirc CR belongs to a group of drugs called calcium channel blockers, which work by relaxing the blood vessels, making it easier for the heart to pump blood.
This medication comes in a controlled release tablet form and is taken once a day, with or without food.
Common side effects of Dynacirc CR include headache, swelling, and constipation. Dynacirc CR can cause dizziness. Do not drive or operate heavy machinery until you know how Dynacirc CR affects you.
Tell your doctor if you are pregnant or plan to become pregnant.
The FDA categorizes medications based on safety for use during pregnancy. Five categories – A, B, C, D, and X, are used to classify the possible risks to an unborn baby when a medication is taken during pregnancy.
Dynacirc CR falls into category C. There are no well-controlled studies in pregnant women. The use of Dynacirc CR during pregnancy should only be considered if the potential benefit outweighs potential risks.
Tell your doctor if you are breastfeeding or plan to breastfeed.
It is not known if Dynacirc CR crosses into human milk. Because many medications can cross into human milk, and because of the possibility for serious adverse reactions in nursing infants with use of this medication, a choice should be made whether to stop nursing or stop the use of this medication. Your doctor and you will decide if the benefits outweigh the risk of using Dynacirc CR.
Take Dynacirc CR exactly as prescribed by your doctor. Follow the directions on your prescription label carefully.
The recommended dose range for Dynacirc CR is 5 to 20 mg once daily. Dose adjustments may be necessary in those with liver or kidney dysfunction.
If you take too much Dynacirc CR, call your healthcare provider or local Poison Control Center, or seek emergency medical attention right away.
Medications can interact with certain foods. In some cases, this may be harmful and your doctor may advise you to avoid certain foods. In the case of Dynacirc CR, there are no specific foods that you must exclude from your diet when receiving this medication.