BRIDGEWATER, N.J.--(BUSINESS WIRE)--NovaDel Pharma Inc. (OTC BB: NVDL) today announced that Zolpimist Oral Spray has been launched in the United States by ECR Pharmaceuticals, a subsidiary of Hi-Tech Pharmacal Co., Inc. (NASDAQ: HITK). ECR Pharmaceuticals announced the immediate availability of Zolpimist Oral Spray, a novel delivery system of the most widely prescribed sleep aid in the US, zolpidem tartrate. The Zolpimist Oral Spray unit contains 60 metered sprays and provides the flexibility of administering either a 5 or 10 mg dose of the zolpidem active ingredient. As with most prescription hypnotic agents, Zolpimist Oral Spray is federally classified as a CIV controlled substance. Zolpimist is only available by prescription.