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Generic Name: Benzoyl peroxide topical [BEN-zoyl-per-OX-ide].
Brand Names: Acne-Clear, Acne Foaming Cream Face Cleanser, Benzac AC, Benzac AC Wash, Benzac W.
Drug Class: Topical acne agents.

What is Pacnex?

Benzoyl peroxide has antibacterial properties. Also, it has a slight drying effect that lets excess oils and dirt be easily removed from the body. Pacnex (for your skin) is used to treat acne. There are a variety of varieties and brands of benzoyl peroxide that are available. There aren't all the brands mentioned in this brochure. Pacnex could be used to treat other conditions that are not covered in this guideline. It is believed that the Pacnex brand name has been taken off the market within the U.S. If the generic versions of this product are approved by the FDA, it is possible that there will be similar generic versions available.

Side effects of Pacnex

Pacnex can trigger an extremely rare but severe allergic reaction to the skin or cause severe irritation. These reactions could occur only an hour after applying the medication within the first day or more afterward. Stop taking Pacnex and seek medical emergency assistance if you show indications that indicate reactions to an allergen that include itching, hives, itching or burning sensations, difficulty breathing, feeling lightheaded, or swollen cheeks, mouth, lips, tongue, or your throat.

Stop using benzoyl peroxide. Contact your physician immediately. If you experience any of the following side effects on your treated skin:

  • Extreme burning or itching.
  • Redness, or severe stinging.
  • Swelling.
  • Peeling.

Common adverse effects of Pacnex can include:

  • A mild burning or stinging sensation.
  • The sensation of itching or tingling.
  • Skin dryness, peeling, or flaking.
  • The redness or irritation could be caused by other factors.

This is not an exhaustive list of probable adverse effects; other side effects may arise. Contact your doctor for advice regarding medical adverse effects. You can report adverse reactions to the FDA at 1-800-FDA-1088.


Benzoyl peroxide could cause a rare but serious allergic reaction or severe itching. Stop using this medication immediately and seek medical attention if you experience itching, hives, trouble breathing, feeling lightheaded, or swelling or redness of the lips, tongue, throat, or face.

Before you take this drug

Benzoyl peroxide if you are allergic to the chemical or are suffering from

  • Extremely sensitive skin.

Consult a physician or pharmacist to determine if Pacnex is suitable to use if you are suffering from any skin issues or allergic reactions. Consult a physician before taking this medication if you are nursing or pregnant. Do not administer this medicine to a child unless you have medical guidance.

How to take Pacnex?

Pacnex may cause a rare but serious allergic reaction to the skin or cause severe discomfort. Before you start using this drug, you can apply the "test dose" to see whether you are experiencing reactions. Apply a tiny amount of the medication to one or two small areas of acne each day for three consecutive days. If there isn't any reaction, you can begin applying the full amount prescribed on the fourth day. Follow the directions on the label or as recommended by your physician. Do not consume by mouth. Topical medicines are for use solely on the skin. Avoid using it on open wounds, sunburned or windburned skin, or inflamed skin. Avoid applying Pacnex to wounds or the areas affected by the condition known as eczema. Make sure that the condition has been healed before using this drug.

Before and after using this medication, wash your hands. Clean and dry the treatment area. Apply benzoyl peroxide to the skin in a thin layer, then apply the cream to the area gently. Take note of and follow the instructions that are included in your medication. Consult your physician or pharmacist if you don't understand these directions.It is possible that you require shaking the medicine at least prior to every use.

Cover the skin unless your physician has instructed you to. Benzoyl peroxide can bleach hair or clothing. Beware of letting this drug get into your clothes. It could take a few weeks before your symptoms begin to improve. Continue to take the medication as prescribed, and notify your physician if your symptoms don't improve. Keep at room temperature, far from heat and moisture.

What happens if I miss a dose?

Take the medication as quickly as you are able, but avoid the missed dose if you think it is getting close to the time of the next dose. Do not take two doses at once.

What happens if I overdose?

For medical emergencies, seek emergency medical attention or contact the Poison Help line toll-free at 1-800-222-1222.

What should be avoided?

Rinse your eyes with water. If Pacnex gets into your mouth or eyes. Avoid using products for the skin that can cause irritation, like harsh soaps, shampoos, and hair coloring products, or permanent chemical hair removers, waxes, or products for the skin made of alcohol, spices, lime, or astringents. Avoid exposure to the sun and tanning beds. Protect yourself with protective clothes and apply sunblock (SPF 30 or more) while you're outdoors.

Interaction with other drugs

Applying benzoyl peroxide when you're also taking the tretinoin topical medication could cause extreme skin irritation. The brands that contain tretinoin are Avita, Renova, Retin-A, Tretin-X, and many others. The skin care treatment will not be affected by any other medications that you are taking. But there are many drugs that interact with each other. Be sure to inform your health professionals about the medicines you take, which include prescription and non-prescription drugs, vitamins, and herbs.