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Miscellaneous analgesics rectal suppository (120 mg; 325 mg; 650 mg; 80 mg)

Acetaminophen (rectal)

Generic name: acetaminophen (rectal)

Brand names: Acephen, Feverall

Last updated October 28, 2026 0 views
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What is acetaminophen?

Acetaminophen is a pain reliever and a fever reducer.

Acetaminophen rectal is given as a suppository to treat many conditions such as headache, muscle aches, arthritis, backache, toothaches, colds, and fevers.

Acetaminophen may also be used for purposes not listed in this medication guide.

Warnings

Do not use more of this medication than is recommended. An overdose of acetaminophen can damage your liver or cause death. Call your doctor at once if you have nausea, pain in your upper stomach, itching, loss of appetite, dark urine, clay-colored stools, or jaundice (yellowing of your skin or eyes).

In rare cases, acetaminophen may cause a severe skin reaction. Stop using this medicine and call your doctor right away if you have skin redness or a rash that spreads and causes blistering and peeling.

Before taking this medicine

You should not use acetaminophen if you are allergic to it.

Do not use acetaminophen without a doctor's advice if you have ever had alcoholic liver disease (cirrhosis) or if you drink more than 3 alcoholic beverages per day.

Your doctor will determine whether acetaminophen rectal is safe for you to use during pregnancy. Do not use acetaminophen without the advice of your doctor if you are pregnant.

Acetaminophen can pass into breast milk and may harm a nursing baby. Do not use this medication without telling your doctor if you are breastfeeding a baby.

Do not give this medicine to a child without medical advice.

Acetaminophen side effects

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

In rare cases, acetaminophen may cause a severe skin reaction that can be fatal. This could occur even if you have taken acetaminophen in the past and had no reaction. Stop using acetaminophen and call your doctor right away if you have skin redness or a rash that spreads and causes blistering and peeling. If you have this type of reaction, you should never again take any medicine that contains acetaminophen.

This medicine may cause serious side effects. Stop using this medicine and call your doctor at once if you have:

  • nausea, upper stomach pain, loss of appetite;
  • itching, dark urine, clay-colored stools; or
  • jaundice (yellowing of the skin or eyes).

Less serious side effects may be more likely, and you may have none at all.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

How should I use acetaminophen?

Follow all directions on your prescription label and read all medication guides or instruction sheets. Your doctor may occasionally change your dose. Use the medicine exactly as directed.

Do not use more of this medication than is recommended. An overdose of acetaminophen can damage your liver or cause death.

If you are treating a child, use a pediatric form of acetaminophen. Carefully follow the dosing directions on the medicine label.

Do not take a rectal suppository by mouth. It is for use only in your rectum.

Wash your hands before and after inserting the rectal suppository.

Remove the wrapper before inserting the suppository. Avoid handling the suppository too long or it will melt in your hands.

Gently insert the suppository into your rectum, pointed tip first.

For best results, stay lying down for a few minutes. The suppository will melt quickly and you should feel little or no discomfort while holding it in.

Stop using acetaminophen and call your doctor if:

  • you still have a fever after 3 days of use;
  • you still have pain after 10 days of use (or 5 days if treating a child);
  • you have a sore throat, high fever, or nausea and vomiting;
  • you have a skin rash, ongoing headache, or any redness or swelling; or
  • if your symptoms get worse, or if you have any new symptoms.

The rectal suppositories may also be stored in the refrigerator. Do not allow the medicine to freeze.

Store at room temperature away from heat and moisture.

What happens if I miss a dose?

Since acetaminophen is used as needed, you may not be on a dosing schedule. If you are using the medication regularly, use the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not use extra medicine to make up the missed dose.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222. An overdose of acetaminophen can be fatal.

The first signs of an acetaminophen overdose include loss of appetite, nausea, vomiting, stomach pain, sweating, and confusion or weakness. Later symptoms may include pain in your upper stomach, dark urine, and yellowing of your skin or the whites of your eyes.

Ask a doctor or pharmacist before using any other cold, allergy, pain, sleep medication, or a blood thinner ( warfarin, Coumadin, Jantoven). Acetaminophen (sometimes abbreviated as APAP) is contained in many combination medicines. Using certain products together can cause you to get too much acetaminophen which can lead to a fatal overdose. Check the label to see if a medicine contains acetaminophen or APAP.

Avoid drinking alcohol. It may increase your risk of liver damage while using acetaminophen.

What other drugs will affect acetaminophen?

Other drugs may affect acetaminophen rectal, including prescription and over-the-counter medicines, vitamins, and herbal products. Tell your doctor about all other medicines you use.

Common questions about acetaminophen

Can You Take Tramadol with Acetaminophen, Ibuprofen, or Aspirin?
Yes, for most people, tramadol can be safely combined with acetaminophen, ibuprofen, or aspirin, and doing so can provide better pain relief than either medicine alone. However, there are important age restrictions and clinical considerations to be aware of. Continue reading
Acetaminophen vs paracetamol: What do you need to know?
Acetaminophen (Tylenol) found in the U.S is the same medicine as paracetamol (Panadol) used throughout many regions of the world, including Europe, Australia, India and New Zealand. Acetaminophen and paracetamol are the generic names of medicines used to treat mild pain, headache and fever. Continue reading
Advil (ibuprofen) and Tylenol (acetaminophen) together?
Yes, it is safe to take Advil (ibuprofen) and Tylenol (acetaminophen) together if you need to for extra pain relief, such as for a dental extraction. This combination is more effective than taking either medication alone because they work through different mechanisms with minimal overlapping of side effects. But it is important to follow key safety guidelines. Continue reading
How much Tylenol (acetaminophen) can you take in a day?
For most adults, the maximum daily dose of Tylenol is 4,000 mg. This amount might be lower depending on your past medical history. Continue reading
What is paracetamol / Panadol called in the US?
Paracetamol is called acetaminophen in the United States. They are the exact same medicine: a pain reliever and fever reducer sold under brand names like Tylenol, Mapap and Panadol, plus many store brands and generics. Only the name changes from one country to the next; the drug itself is identical in chemistry and in how it works. Continue reading
Acetaminophen vs Ibuprofen: Which is better?
Acetaminophen is only effective at relieving pain and fever, while ibuprofen relieves inflammation in addition to pain and fever. Continue reading
What temperature is considered a fever?
A fever is defined as a body temperature of 38°C (100.4°F) or higher. Normal body temperature is usually 37°C (98.6°F), although it can be about a half degree Celsius higher or lower for some people and that’s normal for them. Continue reading

Related medicines

Before you take this medicine: the information on this page is general and may not cover your personal circumstances. Read the label supplied with your medicine and ask a pharmacist or doctor if you are unsure, especially if you are pregnant, breastfeeding, taking other medicines or managing a long-term condition.
General medicine information Consumer-friendly language Source: Drugs.com

Content is provided for education and is not medical advice. See our medical disclaimer.