Diazepam Home>Pharmacy>Drugs_and_Medications>D>Diazepam     Web Pages Diazepam T-Quil, Valium (from Internet Mental Health). Diazepam Information from the RxList on the pharmacology of the injected form. Diazepam ( T-Quil, Valrelease, Valium) Diazepam is an antianxiety agent (benzodiazepines) used primarily for short-term relief of mild to moderate anxiety. Diastat ( Diazepam Rectal Gel ) Prescribing information for this FDA-approved at-home medication for the treatment of cluster seizures, also known as acute repetitive seizures. Diazepam - DrugDigest Brief Patient FAQ.