Tylenol PM is a painkiller, sleep aid and a fever reducer. It contains acetaminophen and an antihistamine called diphenhydramine, which reduces the production of histamine, notes Drugs.com. More »

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Consuming too much Tylenol PM over a short period of time may cause serious health complications, including abdominal pain, vomiting, diarrhea, convulsions and liver damage, according to MedlinePlus. Acetaminophen is the... More »

Any from of Tylenol can lead to liver failure, kidney damage, and compromise a dog's oxygen respiration rate, according to Jennifer Coates, DVM for PetMD. Pet owners are strongly advised against giving their dogs any ove... More »

Excedrin PM is typically used for pain relief, as a fever reducer and as a sleep aid for individuals unable to sleep due to pain, according to Novartis and Drugs.com. It is an over-the-counter medication that comes in ei... More »

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Consuming too much Tylenol PM over a short period of time may cause serious health complications, including abdominal pain, vomiting, diarrhea, convulsions and liver damage, according to MedlinePlus. Acetaminophen is the... More »

According to Parents, it is safe for pregnant women to take Tylenol PM on occasion. However, Tylenol recommends that pregnant or breast-feeding women consult medical professionals before using the drug. Tylenol PM combin... More »

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Acetaminophen 325 milligrams is a pain reliever and a fever reducer classified as a miscellaneous analgesic, according to Drugs.com. The pill is identified by its white round shape, with the imprint L403 and 325 MG on ei... More »

www.reference.com Health Medications & Vitamins