Transcept Pharmaceuticals Inc. (Nasdaq: TSPT) shares rose 93.7% to $6.47 a day after the drug developer said U.S. regulators might finish a new review of its sleep drug within two months. Volume for the stock exceeded 3.8 million, towering above a daily average of only 235,000.

A news release out Sept. 14 noted that the company, headquartered in Point Richmond, Calif., plans to resubmit to the U.S. Food and Drug Administration (FDA) its New Drug Application (NDA) seeking approval of Intermezzo® (zolpidem tartrate sublingual tablet) for use as-needed for the treatment of insomnia when a middle of the night awakening is followed by difficulty returning to sleep.

The plan to resubmit the Intermezzo® NDA results from a meeting today with the FDA during which the FDA generally agreed with a Transcept proposal to reduce the recommended Intermezzo® dose for women from 3.5 mg to 1.75 mg, and to keep the recommended Intermezzo® dose for men at 3.5 mg. The Transcept proposal also includes new instructions stating that Intermezzo® should only be taken if patients have at least four hours of bedtime remaining, and that patients should refrain from driving for at least one hour after arising and until five hours after dosing Intermezzo®.

In the same release, Transcept CEO Glenn A. Oclassen was quoted as saying “We are pleased that the FDA has expressed general agreement with our proposal to address the concerns expressed in the July 2011 Intermezzo® Complete Response Letter. We look forward to working with the FDA to complete the review of this important new treatment strategy for insomnia characterized by middle of the night awakening.”

Transcept is a specialty pharmaceutical company focused on the development and commercialization of proprietary products that address important therapeutic needs in the field of neuroscience.