The active ingredient in acetaminophen suppositories for adults and children 12 and over is 650 milligrams of acetaminophen, according to Drugs.com. The inactive ingredients are glyceryl stearate, hydrogenated vegetable oil, polyethylene glycol 100 stearate and sorbitan monooleate.
There is a pediatric version of acetaminophen suppositories, states DailyMed. It contains 120 milligrams of acetaminophen as the active ingredient. The inactive ingredients are butylated hydroxyanisole, butylated hydroxytoluene, glyceryl stearate, hydrogenated vegetable oil, polyethylene glycol 100 stearate and polysorbate 80.
Acetaminophen is an analgesic for the relief of mild to moderate pain and the reduction of fever, explains MedlinePlus. Side effects are rare but may include a red, peeling, blistering rash; hives; itching; and a mild body rash. Acetaminophen may also cause a systemic allergic reaction. Symptoms of an allergic reaction include hoarseness, difficulty breathing or swallowing and swelling of the lips, throat, tongue or face. Seek medical help if these symptoms occur.
Too much acetaminophen can cause liver damage, cautions Drugs.com. People who have liver disease, drink more than three alcoholic beverages daily or take other medications containing acetaminophen are at risk for an overdose and liver damage. The same is true if an adult takes more than six suppositories in 24 hours, or a child takes five pediatric suppositories in 24 hours, according to DailyMed.