L-Theanine 400mg with BioPerine® delivers a high-strength serving of this naturally occurring amino acid, best known from green tea. L-Theanine is widely used to support a state of calm focus, helping you feel relaxed yet alert. It is often taken during busy workdays, periods of study or times of heightened pressure. BioPerine® black pepper extract is included to support absorption. With 120 vegan capsules providing four months of use, this supplement fits easily into a daily routine alongside good sleep habits, breaks, hydration and other stress-management practices.