HOMATROPINE METHYL BROMIDE

Chemical properties

White or almost white, crystalline powder or colourless crystals

The Uses of HOMATROPINE METHYL BROMIDE

anticholinergic (opthalmic)

The Uses of HOMATROPINE METHYL BROMIDE

Homatropine methylbromide or Methylhomatropine bromide is a quaternary ammonium salt of methylhomatropine. Methylhomatropine is a peripherally acting anticholinergic medication that inhibits muscarinic acetylcholine receptors and thus the parasympathetic nervous system. Methylhomatropine does not cross the blood–brain barrier. Methylhomatropine is used, in addition to papaverine, as component of mild drugs that help "flush" the bile.

Background

Homatropine methylbromide is a quaternary ammonium muscarinic acetylcholine receptor antagonist belonging to the group of medicines called anti-muscarinics. Homatropine is used to treat duodenal or stomach ulcers or intestine problems. It can be used together with antacids or other medicine in the treatment of peptic ulcer. It may also be used to prevent nausea, vomiting, and motion sickness.

Indications

Used in conjunction with antacids or histamine H2-receptor antagonists in the treatment of peptic ulcers, gastric ulcers and duodenal ulcers, to reduce further gastric acid secretion and delay gastric emptying.

brand name

Equipin (Mission); Homapin (Mission).

General Description

Homatropinemethylbromide, 3 -hydroxy-8-methyl-1 H,5 H-tropaniumbromide mandelate (Novatropine, Mesopin), occurs as a bitter,white, odorless powder and is affected by light. The compoundis readily soluble in water and alcohol but insoluble inether. The pH of a 1% solution is 5.9 and that of a 10% solutionis 4.5. Although a solution of the compound yields a precipitatewith alkaloidal reagents, such as mercuric potassiumiodide test solution, addition of alkali hydroxides or carbonatesdoes not cause the precipitate that occurs with nonquaternarynitrogen salts (e.g., atropine, homatropine).

Pharmacokinetics

Homatropine methylbromide belongs to the group of medicines called anti-muscarinics. Homatropine is used to treat duodenal or stomach ulcers or intestine problems. It can be used together with antacids or other medicine in the treatment of peptic ulcer. It may also be used to prevent nausea, vomiting, and motion sickness.

Clinical Use

Homatropine methylbromide is transported poorly acrossthe blood-brain barrier because of its quaternary ammoniumgroup and, therefore, has far fewer stimulant properties thanatropine. It does have all the characteristic peripheralparasympathetic depressant properties of atropine and isused to reduce oversecretion and to relieve GI spasms.

Metabolism

Not Available