NAC and DAO I spoke with someone yesterday who believes that Acetylcysteine suppresses the production of diamine oxidase. Carol Savage (could someone pl tag her for me?) Do you know Amazon.com: Designs for Health NAC 900mg N Acetyl L Cysteine, Antioxidant Glutathione Precursor Detox + Workout Recovery Support Non GMO + Gluten Free Supplement (120 Capsules) : Health & Household ProCaps Laboratories NAC 500 N Acetyl Cysteine N Acetyl Cysteine, Glutathione, & Sulfur AntiOxidants pt 1 FORD BREWER MD MPH MaryRuth's NAC N acetyl cysteine Capsules 120 Capsules