Viking ashwagandha is designed to provide you with effective, fastacting, anti-stress support. Each capsules contains 600 mg Ashwagandha root extract,which is standardized to contain a minimum of 7% withanolides. Withanolides are the key bioactive ingredient in ashwagandha powder/capsules, which is known to help our body to retain optimum energy level, physical strength, muscle performance, focus, concentration & memory.