Pure Encapsulations' Rapid Mental Energy blends Alpinia galanga (enXtra) and American ginseng (Cereboost) to support alertness and working memory. A study indicated that enXtra increased alertness scores at 1. 3. and 5 hours after a single 300 mg dose. Cereboost aims to provide rapid support for visuospatial and verbal working memory. Research involving healthy middle-aged adults showed improved working memory 3 hours after a 200 mg dose of Cereboost. Studies involving healthy young adults indicated improvements in working memory and attention with daily Cereboost use. A trial with healthy volunteers showed improved working memory after a single 200 mg dose of Cereboost. sustained over 6 hours. The ginsenosides in Cereboost are suggested to support cholinergic neurotransmission in brain regions related to learning and memory. This combination of extracts is designed to support cognitive functions related to alertness and working memory.