Lenitral (oral)


Generic Name: Lenitral (oral) Brand Name(s): Generics only. No brands available.


What is lenitral (oral) used for?

Lenitral is used to treat or prevent attacks of chest pain (angina). It may also be used for purposes, ask your doctor for more information.

How should I take lenitral (oral)?

Lenitral is usually taken at the first sign of chest pain. If possible, try to rest or stay seated when you use this medication. Lenitral can cause dizziness or fainting.

Capsule: Do not crush, chew, break, or open an extended-release capsule. Swallow it whole.

Sublingual tablet: Lenitral sublingual tablet should be placed under your tongue and allowed to dissolve slowly. Do not chew or swallow it. You may use additional tablets every 5 minutes, but not more than 3 tablets in 15 minutes.

You may feel a slight burning or stinging in your mouth when you use this medicine. However, this sensation is not a sign of how well the medication is working. Do not use more medication just because you do not feel a burning or stinging.

If you take lenitral on a regular schedule to prevent angina, do not stop taking it suddenly or you could have a severe attack of angina. Keep this medicine on hand at all times in case of an angina attack. Get your prescription refilled before you run out of medicine completely.

How do I store lenitral (oral)?

Lenitral is best stored at room temperature away from direct light and moisture. To prevent drug damage, you should not store lenitral in the bathroom or the freezer. There may be different brands of lenitral that may have different storage needs. It is important to always check the product package for instructions on storage, or ask your pharmacist. For safety, you should keep all medicines away from children and pets.

You should not flush lenitral down the toilet or pour them into a drain unless instructed to do so. It is important to properly discard this product when it is expired or no longer needed. Consult your pharmacist for more details about how to safely discard your product.

Precautions & warnings

What should I know before using lenitral (oral)?

Before using this drug, tell your doctor if you are allergic to any ingredients of lenitral.

This medicine can cause unusual results with certain medical tests. Tell any doctor who treats you that you are using lenitral.

Is it safe during pregnancy or breastfeeding?

There are no adequate studies in women for determining risk when using lenitral during pregnancy or while breastfeeding. Please always consult with your doctor to weigh the potential benefits and risks before taking lenitral. Lenitral is pregnancy risk category C, according to the US Food and Drug Administration (FDA).

FDA pregnancy risk category reference below:

  • A=No risk
  • B=No risk in some studies
  • C=There may be some risk
  • D=Positive evidence of risk
  • X=Contraindicated
  • N=Unknown

Side effects

What side effects can occur from lenitral (oral)?

Common side effects may include:

  • Mild burning or tingling with the tablet in your mouth
  • Headache
  • Dizziness
  • Spinning sensation
  • Nausea
  • Vomiting
  • Flushing (warmth, redness, or tingly feeling)
  • Pale skin
  • Increased sweating
  • Feeling weak or dizzy

Call your doctor at once if you have:

  • Severe or throbbing headaches
  • Pounding heartbeats or fluttering in your chest
  • Slow heart rate
  • Blurred vision or dry mouth
  • A light-headed feeling, like you might pass out

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

Seek emergency medical attention if your chest pain gets worse or lasts more than 5 minutes, especially if you have trouble breathing or feel weak, dizzy, or nauseated, or lightheaded, pain spreading to your jaw or shoulder, nausea, sweating and general ill feeling.

Not everyone experiences these side effects. There may be some side effects not listed above. If you have any concerns about a side-effect, please consult your doctor or pharmacist.


What drugs may interact with lenitral (oral)?

Lenitral may interact with other drugs that you are currently taking, which can change how your drug works or increase your risk for serious side effects. To avoid any potential drug interactions, you should keep a list of all the drugs you are using (including prescription drugs, nonprescription drugs, and herbal products) and share it with your doctor and pharmacist. For your safety, do not start, stop, or change the dosage of any drugs without your doctor’s approval.

Products may interact with this drug, including:

  • Aspirin or heparin
  • A diuretic or “water pill”
  • Medicine to treat depression or mental illness
  • Ergot medicine to treat migraine headache, such as dihydroergotamine, ergotamine, ergonovine, or methylergonovine

Does food or alcohol interact with lenitral (oral)?

Lenitral may interact with food or alcohol by altering the way the drug works or increase the risk for serious side effects. Please discuss with your doctor or pharmacist any potential food or alcohol interactions before using this drug.

What health conditions may interact with lenitral (oral)?

Lenitral may interact with your health condition. This interaction may worsen your health condition or alter the way the drug works. It is important to always let your doctor and pharmacist know all the health conditions you currently have.


The information provided is not a substitute for any medical advice. You should ALWAYS consult with your doctor or pharmacist before using lenitral (oral).

What is the dose of lenitral (oral) for an adult?

Angina Pectoris

Sublingual tablet:

0.3 to 0.6 mg sublingually or in the buccal pouch every 5 minutes as needed, up to 3 doses in 15 minutes; if pain persists after maximum dose, prompt medical attention is recommended.

Angina Pectoris Prophylaxis

Sublingual tablet:

0.3 to 0.6 mg sublingually or in the buccal pouch 5 to 10 minutes prior to engaging in activities that might precipitate an acute attack.

Topical ointment:

The recommended dose is 7.5 mg topically upon rising and 1/2 inch (7.5 mg) 6 hours later; titrate as needed and tolerated.

Extended release capsule:

The recommended dose is 2.5 to 6 mg orally 3 to 4 times a day; titrate as needed and tolerated.

Anal Fissure and Fistula

Rectal ointment:

The recommended dose is 375 mg of ointment equivalent to 1.5 mg of lenitral intra-anally every 12 hours for up to 3 weeks.

What is the dose of lenitral (oral) for a child?

The dosage has not been established in pediatric patients. It may be unsafe for your child. It is always important to fully understand the safety of the drug before using. Please consult with your doctor or pharmacist for more information.

How is lenitral (oral) available?

Lenitral (Oral) is available in the following dosage forms and strengths:

  • Capsules; Oral; 2.5 mg, 7.5 mg

What should I do in case of an emergency or overdose?

In case of an emergency or an overdose, call your local emergency services or go to your nearest emergency room.

What should I do if I miss a dose?

If you miss a dose of lenitral, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and take your regular dose as scheduled. Do not take a double dose.

Hello Health Group does not provide medical advice, diagnosis or treatment.

Review Date: March 25, 2017 | Last Modified: March 25, 2017

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