Stellar Chemical Laboratories Pvt. Ltd offers Prenoxdiazine. Stellar Chemical Laboratories Pvt. Ltd [SCL] is an I.S.O. 9001-2000 certified company. Prenoxdiazine is non-narcotic, anti-tussive with pre-dominant peripheral action on the stretch receptors in bronchi and bronchioles with excellent safety profile. It offers symptomatic relief from cough of all types, dry, wet, or asthmatic in all age groups.