Acetaminophen (paracetamol), also commonly known as _Tylenol_, is the most commonly taken analgesic worldwide and is recommended as first-line therapy in pain conditions by the World Health Organization (WHO).[A176318] It is also used for its antipyretic effe…

Acetylcysteine is an antioxidant and glutathione inducer indicated for mucolytic therapy and the treatment of [acetaminophen] overdose.[L31378,L31383,L31388,L31478] Acetylcysteine has also been studied for a wide variety of off-label indications with mixed re…

Benzhydrocodone is a benzylic prodrug of hydrocodone.[L4894] It was developed in an effort to reduce parenteral bioavailability of the active metabolite as a deterrent to abuse.[A182177] Benzhydrocodone is indicated for use in the short-term management of pai…

Butalbital, or 5-allyl-5-isobutylbarbituric acid, is a derivative of barbituric acid which the hydrogens at position 5 are substituted by an allyl group and an isobutyl group. It is a short-to-intermediate acting member of barbiturates that exhibit muscle-rel…

Dichloralphenazone is a sedative composed of chloral hydrate and phenazone. It is typically found in combination products Nodolor and Midrin containing [isometheptene] and [acetaminophen] used for the relief of tension and vascular headaches. It is a US Sched…

Hydrocodone is a synthetic opioid derivative of codeine.[T116] It is commonly used in combination with [acetaminophen] to control moderate to severe pain. Historically, hydrocodone has been used as a cough suppressant although this has largely been replaced b…

Methocarbamol was developed in the early 1950s as a treatment for muscle spasticity and the associated pain.[A178441,A178450] It is a guaiacol glyceryl ether.[A178450] Methocarbamol tablets and intramuscular injections are prescription medicines indicated …

Phenyltoloxamine is an antihistamine drug with sedative and analgesic effects. It is a H1 receptor blocker and a member of the ethanolamine class of antihistaminergic drugs. It is available in combination products that also contain other analgesics and antitu…

Propacetamol is a non-opioid analgesic devoid of the major contraindications.[A32051] It is a derivative of [acetaminophen], or paracetamol, with the molecular formula glycine, N, N-diethyl-,4-(acetylamino)phenyl ester. Propacetamol is a parenteral formulatio…