ANTICHOLINERGIC DRUGS

Anticholinergics are drugs that block the action of acetylcholine. They block acetylcholine from binding to its receptors on certain nerve cells. They inhibit parasympathetic nerve impulses. These nerve impulses are responsible for involuntary muscle movements in the gastrointestinal tract, lungs, urinary tract and other parts of body. The nerve impulses help control functions such as salivation, digestion, urination and mucus secretion.
Blocking acetylcholine signals can decrease involuntary movement, digestion and mucus secretion. If anticholinergics are taken, you may retain urine and experience dry mouth.

1. NATURAL ALKALOIDS: 
                Atropine
                Hyoscine (Scopolamine)

2. SEMISYNTHETIC DERIVATIVES:
                Homatropine
                Atropine methonitrate
                Hyoscine butyl bromide
                Ipratropium bromide
                Tiotropium bromide

 3. SYNTHETIC COMPOUNDS

      a. Mydriatics: 
                Cyclopentolate
                Tropicamide

      b. Antisecretory-antispasmodics:

          Quaternary compounds: 
                Propantheline
                Oxyphenonium
                Clidinium
                Pipenzolate
                Methylbromide
                Isopropamide
                Glycopyrrolate

          Tertiary amines:
                Dicyclomine
                Valethamate
                Pirenzepine

       c. Vasicoselective:
                Oxybutynin
                Flavoxate
                Tolterodine

       d. Antiparkinsonian: 
                Trihexyphenidyl (Benzhexol)
                Procyclidine
                Biperiden