The present invention is a novel nutritional product composition formulated to be used as medical foods for managing COPD. The formula comprises clary sage root extract, L-Leucine, L-Isoleucine, L-Valine and L-Glutamine. The most active chemicals that import antioxidants proprieties are Tanshinones. The composition enhances the activity of Phase 2 enzymes that deactivate and react to oxygen species and many toxins present in tobacco smoke. Preparation of highly enriched Tanshinones improved the lung function in patients with chronic asthmatic bronchitis.
