Practolol (Eraldin, Dalzic, Praktol, Cardiol, Pralon, Cordialina, Eraldina, Teranol) is a selective beta blocker that has been used in the emergency treatment of cardiac arrhythmias. Practolol is no longer used as it is highly toxic despite the similarity of its chemical formula to propranolol. After its introduction, keratoconjunctivitis sicca, conjunctival scarring, fibrosis, metaplasia, and shrinkage developed in 27 patients as an adverse reaction to practolol. Rashes, nasal and mucosal ulceration, fibrous or plastic peritonitis, pleurisy, cochlear damage, and secretory otitis media also occurred in some cases. Three patients suffered profound visual loss though most retained good vision. Symptoms and signs improved on withdrawal of the drug, but reduction of tear secretion persisted in most patients. (British Medical Journal, March 15, 1975)
Side effects
Side effects are similar to those of other beta blockers, such as bronchoconstriction, cardiac failure, cold extremities, fatigue and depression, hypoglycaemia.
Furthermore, chronic use of practolol may cause oculomucocutaneous syndrome, a severe syndrome whose signs include conjunctivitis sicca and psoriasiform rashes, otitis and sclerosing serositis. This syndrome has not been observed with other such beta blockers.
Ban
This drug has been withdrawn from the market in India due to Oculomucocutaneous Syndrome.
References
External links
- Scientific information / studies
- Guinea Pig study from 1975
- Liver effect study from 1981
- Study of uses during surgery
- Molecular structure
- General information
- DDB 10479