Nifedipine 0.3% rectal ointment is a compounded, prescription medication applied to the anal area. Nifedipine is a calcium channel blocker that, when applied to the anal area, relaxes the ring of muscle around the anus (the internal anal sphincter). Providers most often prescribe it for anal fissures, which are small tears in the skin of the anal canal that can cause sharp pain and bleeding with bowel movements. It is prepared by a licensed pharmacy to the strength your provider orders rather than mass-produced.
Nifedipine taken by mouth is an FDA-approved medication for blood pressure and chest pain, but there is no FDA-approved nifedipine product for use on the anal area in the United States. The rectal ointment is available only through compounding. Professional guidelines for colon and rectal surgeons recognize topical calcium channel blockers like nifedipine as a first-line, non-surgical option for chronic anal fissures. It is part of Bayview's anorectal range alongside diltiazem 2% rectal ointment and gel.
How does it work?
Most anal fissures hurt and heal slowly because the internal anal sphincter tightens and goes into spasm. That constant tension squeezes the small blood vessels that supply the torn skin, reducing blood flow and keeping the tear from healing (StatPearls, Anal Fissures). Nifedipine is a calcium channel blocker. Applied directly to the anal area, it relaxes that muscle, which eases the spasm and pain and allows more blood to reach the tissue so the fissure can heal. In a published trial, topical nifedipine measurably lowered the resting pressure of the sphincter (Perrotti et al., Diseases of the Colon & Rectum). Because it is applied to a small area of skin, only small amounts are absorbed into the rest of the body.
What is it used for?
Providers most often prescribe nifedipine 0.3% rectal ointment for chronic anal fissures, meaning tears that have not healed after about six weeks of home care such as fiber, fluids, and warm sitz baths. The 2023 clinical practice guideline from the American Society of Colon and Rectal Surgeons notes that topical calcium channel blockers heal chronic fissures about as well as topical nitroglycerin but cause fewer side effects such as headache, and can be used as first-line treatment (ASCRS 2023). In a randomized trial of topical nifedipine 0.3% used twice daily for six weeks (combined with lidocaine in that study), about 95% of chronic fissures healed, compared with 16% in the comparison group (Perrotti et al.). Some providers also consider it for other conditions involving anal muscle spasm. Only a licensed provider can decide whether this formulation is right for a person; Bayview Pharmacy does not provide consultations or determine appropriateness, and a valid prescription is required.
How does it compare to other treatments?
Nifedipine is one of several topical medications used to relax the anal sphincter. It works the same way as diltiazem, the other commonly compounded calcium channel blocker, and differently from nitroglycerin, which relaxes the muscle through a different pathway and causes headaches more often. The table below describes the options for education only.
| Medication | Class | Notes |
|---|---|---|
| Nifedipine 0.3% | Calcium channel blocker | Compounded only; studied at low strengths applied twice daily |
| Diltiazem 2% | Calcium channel blocker | Compounded only; the same class, at a different strength typical for that drug |
| Nitroglycerin 0.4% | Nitrate | An FDA-approved product exists; headache is a common side effect |
These options are described for education only and are not a statement that any medication is better, stronger, or more effective. The different strengths reflect how each drug is typically used, not how strong the effect is. Your provider selects the medication and dose that are appropriate for you.
How is it used?
Nifedipine rectal ointment is used following the exact schedule and amount set by your prescriber. A common direction is to apply a small, pea-sized amount to the anal area twice daily, and some providers direct use after bowel movements as well. Treatment often continues for six to eight weeks so the fissure has time to heal, even if the pain improves sooner. Apply it with a fingertip, a glove, or a finger cot as directed, and wash your hands before and after use. Use it only on the area your provider specifies, and never change your dose or stop early on your own. If you are unsure about how to use it or about your dosing, contact your prescriber, and a Bayview pharmacist is available if you have questions about your prescription.
Side effects & safety
Applied to the anal area, nifedipine is absorbed into the rest of the body only in small amounts. In the published randomized trial of topical nifedipine for fissures, no whole-body side effects were observed (Perrotti et al.). The most common effects are local, such as itching, burning, or irritation where it is applied. Some people notice a mild headache or flushing, effects known from the calcium channel blocker class (MedlinePlus, Nifedipine).
Tell your provider about all medications you take, especially blood pressure or heart medications, including oral nifedipine or other calcium channel blockers, and share your full medical history so they can decide whether it is appropriate for you.
Seek medical care for signs of a serious reaction, such as fainting, severe dizziness, a rapid or irregular heartbeat, or a spreading rash or swelling.
Who should not use it?
Nifedipine rectal ointment is not appropriate for everyone. It should not be used by people who are allergic to nifedipine or to any ingredient in the base. It is used with caution in people taking oral nifedipine or other blood pressure or heart medications, and in people with certain heart conditions or very low blood pressure, since even small absorbed amounts add to the same drug class. If you are pregnant, planning to become pregnant, or breastfeeding, talk with your provider before using it. Tell your provider about your full medical history and all medications you take so they can determine whether this formulation is appropriate for you.
How should it be stored?
Store exactly as directed on your label, at room temperature and away from heat, light, and moisture. Nifedipine is sensitive to light, so keep the tube closed and in its container. Keep it out of the reach of children and others in the home, and do not share it. Do not use it after its expiration or beyond-use date, and dispose of unused medication as directed.
Why is this compounded?
There is no FDA-approved topical or rectal nifedipine product in the United States, so compounding is the only way to obtain it. Compounding lets a licensed pharmacy prepare the low strength used on the anal area, such as 0.3%, from a drug that is otherwise manufactured only as tablets and capsules. As a 503A compounding pharmacy, Bayview Pharmacy prepares each order in small batches under USP <795> standards using quality ingredients. Compounded preparations are not FDA-approved.
Clinical details for prescribers
Regulatory status. Nifedipine is not a controlled substance. Oral nifedipine is FDA-approved for hypertension and angina; no topical or rectal nifedipine product is FDA-approved in the United States, so perianal nifedipine is available only through 503A compounding. Compounded preparations are not FDA-approved.
Formulation (perianal dosing). Compounded as nifedipine 0.3% in an ointment base. Commonly reported dosing is a pea-sized amount applied to the perianal area and distal anal canal twice daily for 6 to 8 weeks; some regimens add application after bowel movements. In a randomized double-blind trial, nifedipine 0.3% with lidocaine 1.5% applied every 12 hours for 6 weeks healed 94.5% of chronic fissures vs. 16.4% with lidocaine/hydrocortisone control, with an 11% mean reduction in anal resting pressure and no observed systemic effects (Perrotti et al., DCR 2002). The 2023 ASCRS guideline recommends topical calcium channel blockers as first-line therapy for chronic anal fissure, with healing comparable to topical nitrates and a lower incidence of headache (ASCRS 2023).
Counseling / clinical points:
- Counsel patients to complete the full course even if pain improves early; chronic fissures typically need 6 to 8 weeks of therapy
- Pair with supportive care (fiber, fluids, sitz baths, stool softeners as appropriate)
- Most common adverse effects are perianal irritation and itching, with occasional headache or flushing; lidocaine can be co-compounded on request for analgesia
- Review concurrent oral calcium channel blockers and antihypertensives
- Persistent or atypical fissures warrant re-evaluation for secondary causes (Crohn disease, infection, malignancy) (StatPearls)
Botulinum toxin injection and lateral internal sphincterotomy remain options after failed topical therapy per ASCRS. Diltiazem 2% is the class alternative. Background: StatPearls, Anal Fissures; StatPearls, Nifedipine.
This is a prescription compounded medication and is not FDA-approved. This information is educational and is not medical advice. Your provider determines whether it is appropriate and sets the formulation and dose.
