Jarrow Formulas GABA Soothe® (30 capsules) contains a combination of PharmaGABA®, L-theanine, and Sensoril® ashwagandha extract. PharmaGABA® is a patented form of GABA, while L-theanine is an amino acid naturally found in tea leaves. Sensoril® is a standardized extract from the ashwagandha plant (Withania somnifera). This supplement is suitable for vegetarians and vegans and is easy to take as part of a daily routine.