Benefits A pain relieving rub that contains time-tested, active herbal ingredients. A gentle application of Zandu balm to the affected area brings the desired relief. Zandu Balm contains natural potent pain relievers for minor aches and pains from sprains, strains, backaches, arthritis, bruises, and sports exertion. Description Oil of Gaultheria (Wintergreen) is widely used in medicine as an external application for rheumatic disorders. It is the natural source of methyl salicylate which is a very effective analgesic for musculoskeletal disorders. Remady For Headache, Body pain and Cold.