This formula is composed of a powerful combination of Vitamin C (L-ascorbic acid), a water-soluble nutrient with immunity-bolstering effects, elderberry (Sambucus nigra) with a history of immune system support, and highly absorbable delta-tocotrienols, a form of Vitamin E which assists with immune cell protection, and shields from oxidative stress. This trifecta of elements works in unison to bolster respiratory health.