A therapeutic taste-neutral powder form of acetaminophen obtained by spray-drying a suspension of acetaminophen in a solution of a particular copolymer, cationic in character, based on dimethylaminoethyl methacrylate and neutral methacrylic acid esters.

A dosage form is disclosed comprising a wall that surrounds a compartment with an exit means in the wall. The compartment comprises a first or fast releasing lamina and a second or short releasing lamina that are delivered through the exit means over two different periods of time.

Dry, directly compressed tablets are provided by a blend of from 60 to 90 weight percent of acetaminophen and from 10 to 40 weight percent of non-ionizable lipid having a melting point of from 55.degree. C. to 80.degree. C. The preferred lipid is hydrogenated cotton seed oil. The tablets are characterized by a hardness of at least 5 kgs. When produced by a conventional tabletting machine using a pressure of 1.5 to 20 tons per square inch.

This invention relates to analgesic composition and more particularly, to a directly dry compressible composition comprising at least about 70% by dry weight of the composition of acetaminophen and a metal carboxymethyl starch present in an amount sufficient for it to function both as a binder and as a disintegrating agent.

The present invention relates to methods of controlling iron overload in a patient in need thereof. The present invention particularly relates to methods of treating hemochromatosis and other causes of iron overload.

The toxicity in humans of ingested acetaminophen is ameliorated by methionine sulfoxide.

A method and composition for reducing the toxicity of acetaminophen to a warm blooded animal. The method comprises administering to the animal a sufficient dose of propylene glycol. The sufficient dose is an amount of from about 0.3 to about 12 grams per kilogram of body weight of the animal. The composition comprises a mixture of acetaminophen and propylene glycol preferably in a weight ratio of propylene glycol to acetaminophen of from about 0.3:1 to about 4000:1.

A method is provided for purifying a crude N-acetyl-para-aminophenol (APAP) containing color bodies or their precursors, the method comprising: a) forming a wet crude APAP; and b) subsequently drying said crude APAP in the presence of a sufficient amount of an acetylating agent for a sufficient period of time to convert said color bodies or their precursors to substantially non-color bodies.

This invention relates to an analgesic composition and more particularly, to a directly dry compressible composition comprising at least about 70% by dry weight of the composition of acetaminophen and a metal carboxymethyl starch present in an amount sufficient for it to function both as a binder and as a disintegrating agent.

The invention provides compositions and methods for treatment of acetaminophen intoxication using an inhibitor of xanthine oxidase that does not induce superoxide radical formation when introduced into a subject. An example of a xanthine oxidase inhibitor that can be used according to the invention is AHPP.