Charak Pharma Extrammune Tablets To Boost Immunity Pack Of 3 (30 Tablet Each Pack). Poor immunity in general has a huge negative impact on the productivity in school at work and even within the family. It is important to have a well functioning immune system by following a healthy lifestyle and incorporating Ayurvedic immunity enhancing herbs like Guduchi and pippali. The immune modulating herbs like Guduchi Yashtimadhu Pippali Tulsi improve bodys natural defense by stimulating the production and activity of infection-fighting cells. In addition these herbs offer antiviral antibacterial anti-infective anti-inflammatory antioxidant properties along with working as a respiratory tonic & a blood purifier.