Brightvigil

Brightvigil was a potion that protected against sleep-inducing magical effects.

Description
Brightvigil was a light, clear liquid made by the sorceress and alchemist Angrath Dree from herbs and saps found in northwest Faerûn. It could be purchased from her at Old Angrath's Smokehouse in Red Larch, or possibly from secondary vendors elsewhere. The usual price for a single dose was 30 gp.

Powers
The effects of brightvigil lasted one hour. During that hour the imbiber was much less likely to be affected by sleep spells and similar magics.