New Nostril Nostrum

What is jammed up nostrils, supposedly provides a jolt, and isn't cocaine? Presenting Ener-B, an intranasal gel loaded with vitamin B12 and sold in health stores for $12 a twelve-dose box. Like '60s celebrities who swore by B12 shots, enthusiasts claim the new nose job supplies a burst of energy. Absurd, say experts, and the FDA is investigating. Most people have a five- year B12 supply stored in their livers; excess simply gets excreted. "If you buy this gel," sniffs Dr. Victor Herbert of Manhattan's Mount Sinai Medical Center, "you're going to have the most expensive urine in the neighborhood."