Country Life’s Aller-Max® is a unique non-drowsy formula based on the key ingredients of Quercetin dihydrate, Bromelain, and Vitamin C. Quercetin dihydrate is a naturally occurring non-citrus bioflavonoid derived from flower buds. Bromelain is an enzyme derived from pineapple stem. Aller-Max® also provides Vitamin C as well, alongside herbs like Stinging Nettle and Cayenne.