Nifedipine and lidocaine cream is applied in a very small amount, about the size of a pinhead, to the anal area using a gloved finger. The process is straightforward, but a few details about positioning, hygiene, and handling make a real difference in how well it works and how few side effects you experience.
Step-by-Step Application
Michigan Medicine recommends the following process:
- Wash your hands thoroughly. Put on disposable gloves before handling the cream. Gloves aren’t optional here. Nifedipine is a blood pressure medication, and your fingertips can absorb it into your bloodstream, potentially causing headaches, flushing, or lightheadedness.
- Lie on your left side. Keep your left leg flat and bend your right leg with your knee up. This position gives you the easiest access and helps you stay relaxed.
- Take a moment to relax. Tension in the area works against you. The whole point of this cream is to relax the muscle, so being calm during application helps.
- Place a pinhead-sized amount on your gloved finger. This is a very small quantity. More is not better, and using too much increases the chance of side effects.
- Spread the cream around the anus and just inside the rectum. You don’t need to insert your finger deeply. A gentle, shallow application covers the area that needs treatment.
- Remove gloves and wash your hands again.
Most prescriptions call for applying the cream two to three times per day, with treatment courses typically lasting six to eight weeks. Your pharmacist’s label should specify the exact frequency for your prescription.
Why Gloves Matter
This is a compounded medication, meaning a pharmacy mixed it specifically for you. The nifedipine component is the same drug used in oral blood pressure pills. When it absorbs through your fingertips, it can lower your blood pressure and cause headaches or dizziness. Wearing standard disposable gloves (latex, nitrile, or vinyl) prevents this. If you don’t have gloves handy, a finger cot over the application finger is a reasonable substitute, though full gloves are the standard recommendation.
How the Cream Works
An anal fissure is essentially a small tear in the lining of the anal canal. It hurts because the internal sphincter muscle goes into spasm around the tear, cutting off blood flow and preventing healing. This cream attacks the problem from two directions.
Nifedipine is a calcium channel blocker. It reduces the tone and spontaneous contractions of the sphincter muscle by limiting calcium flow into the muscle cells. Less spasm means better blood supply to the tear, which allows it to heal. Nifedipine also appears to have an anti-inflammatory effect at the application site. In clinical studies, the cream reduced resting pressure in the anal canal by about 11 percent, which is enough to restore circulation to the fissure.
Lidocaine is a local anesthetic. It numbs the area, which provides pain relief during and after application. This also helps break the cycle of pain, spasm, and re-injury that keeps fissures from healing on their own.
How Effective Is It?
The combination works well. In a prospective, double-blind study, 94.5 percent of patients with chronic anal fissures healed after six weeks of treatment with topical nifedipine and lidocaine. That’s a striking number, especially for chronic fissures that had already failed to heal on their own. The control group healed at just 16.4 percent over the same period.
These results are part of why this combination has become a first-line conservative treatment before surgery is considered.
Possible Side Effects
Side effects are generally mild and related to the nifedipine component. The most common are flushing, headache, lightheadedness, and itching around the application site. These are more likely if you use too much cream or skip the gloves. If you notice persistent headaches or dizziness, it may be worth checking whether you’re using more than the pinhead-sized dose.
One important note: if you’ve been using the cream for several weeks, don’t stop abruptly. Tapering off gradually is advised because sudden discontinuation can, in rare cases, cause a rebound increase in blood pressure in people who are susceptible.
Storing the Cream
Because this is a compounded medication, it doesn’t have the same shelf life as a factory-sealed product. Stability testing shows that nifedipine cream and ointment stored in white plastic jars at room temperature maintain their potency for about 90 days. Gel formulations are stable for about 60 days under the same conditions. Refrigeration at 4°C (about 39°F) also works well for long-term storage.
Your pharmacy will print a beyond-use date on the label. Stick to it. If the cream changes color, texture, or smell before that date, don’t use it. Nifedipine is sensitive to light, which is one reason some pharmacies dispense it in amber or opaque containers. Keep the jar closed and out of direct sunlight.
Tips for Better Results
The cream does its job best when you support the healing process in other ways. Keeping stools soft is critical, since hard or straining bowel movements can re-tear a fissure that’s trying to heal. A fiber supplement, adequate water intake, and avoiding prolonged sitting on the toilet all help. Warm sitz baths (sitting in a few inches of warm water for 10 to 15 minutes) can also relax the sphincter and improve blood flow to the area, complementing what the nifedipine is doing chemically.
Applying the cream after a bowel movement and after a sitz bath, when the area is clean and the muscle is already somewhat relaxed, is a practical approach that many patients find works well with their daily routine.