Hist Block DAO is a targeted blend of flavonoids, antioxidants, proteolytic enzymes and botanicals designed to provide comprehensive support for seasonal challenges caused by common environmental allergens. 

Buy Now From Amazon

Product Review

Hist Block DAO is a targeted blend of flavonoids, antioxidants, proteolytic enzymes and botanicals designed to provide comprehensive support for seasonal challenges caused by common environmental allergens. 

  • Hist Block DAO is a targeted blend of flavonoids, antioxidants, proteolytic enzymes and botanicals designed to provide comprehensive support for seasonal challenges caused by common environmental allergens. 
  • This formula includes quercetin, bromelain, stinging nettles leaf, and N-acetyl cysteine.
  • The powerful combination actively promotes healthy nasal and sinus passages for individuals with elevated histamine and respiratory irritation.
  • It may also support those with genetic polymorphisms on the DAO gene.
  • Supports Immune Balance in Hypersensitive Individuals

Similar Products

Methyl Folate Plus With Activating Co Factor Methyl Folate Supplements (90 Capsules)NATURE'S SUNSHINE Histablock Supplements, 90 CountNeurobiologix - Mito Cell PQQ (60 Capsules)Is Food Making You Sick?: The Strictly Low Histamine DietBodyBio - Balance Oil, Organic Safflower Seed and Flax Seed Oil Blend, 16 oz.BodyBio - PC Phosphatidylcholine, 1300mg, Phospholipid Complex, 100 SoftgelsNeurobiologix - Toxiclear Professional Formula (120 Capsules)Pure Encapsulations NAC 900mg 120cOrtho Molecular Product Natural D-Hist -- 120 CapsulesNeuro-Immune Stabilizer Topical Cream 1.8 Ounces/ 120 Pumps