DYCLONINE

Absorption

Readily absorbed through mucous membranes into the systemic circulation. The rate of absorption is influenced by the vascularity or rate of blood flow at the site of application, the total dosage (concentration and volume) administered, and the duration of exposure. Absorption from mucous membranes of the throat or respiratory tract may be especially rapid.

Toxicity

Symptoms of overdose include cardiovascular system depression, CNS toxicity, and methemoglobinemia.

Originator

Dyclone,Dow,US,1956

The Uses of DYCLONINE

anesthetic (local)

Indications

Used to provide topical anesthesia of accessible mucous membranes prior to examination, endoscopy or instrumentation, or other procedures involving the esophagus, larynx, mouth, pharynx or throat, respiratory tract or trachea, urinary tract, or vagina. Also used to suppress the gag reflex and/or other laryngeal and esophageal reflexes to facilitate dental examination or procedures (including oral surgery), endoscopy, or intubation. Also used for relief of canker sores, cold sores or fever blister.

Background

Dyclonine is an oral anaesthetic found in Sucrets, an over the counter throat lozenge. It may also be found in some Cepacol sore throat spray products.

Definition

ChEBI: N-Ethylpiperidine in which one of the hydrogens attached to the methyl group is substituted by a 4-butoxybenzoyl group.

Manufacturing Process

A mixture of 17.6 grams of p-n-butoxyacetophenone, 12.1 grams of piperidine hydrochloride, 4.5 grams paraformaldehyde, 0.25 cc concentrated hydrochloric acid, 52.5 cc nitroethane, 7.5 cc of 95% ethanol, and 15 cc of toluene was boiled under reflux for one hour, removing water formed in the reaction by means of a condensate trap. The mixture was then cooled. The crystals which formed were collected by filtration, washed with anhydrous ether and recrystallized from methyl ethyl ketone. The crystals thus obtained, which melted at 174-175°C, were shown by analysis to be 4-n-butoxy-β- piperidinopropiophenone hydrochloride.

brand name

Dyclone (AstraZeneca).

Therapeutic Function

Local anesthetic

Pharmacokinetics

Dyclonine is an oral anasthetic. If substantial quantities of local anesthetics are absorbed through the mucosa, actions on the central nervous system (CNS) may cause CNS stimulation and/or CNS depression. Actions on the cardiovascular system may cause depression of cardiac conduction and excitability and, with some of these agents, peripheral vasodilation.

Metabolism

Not Available