Why These Natural Ingredients:

Vitamin C  (as Ascorbic Acid)  150 mg

Quercetin 200 mcg
Naturally found in onions, quercetin is a mast cell stabilizerand a powerful natural flavonoid. Quercetin has been shown toinhibit certain compounds that typically affect sinus and respiratory health.

Stinging Nettles Leaf  200 mg
Studies have shown stinging nettles have demonstrated bothpromising mechanisms and clinical results for supporting nasalpassageway health. While further study is needed, trials haveshown stinging nettles demonstrated measurable differences vs. placebo after only one week.

Bromelain  50 mg
A strong pineapple enzyme, bromelain has proven mucolyticproperties. As such, bromelain supports normal mucousal tissue function and enhances the absorption of quercetin.

N-Acetyl L-Cysteine (NAC)  25 mg
An amino acid that is a natural mucolytic, NAC reduces the viscosity of mucus. Studies have shown individuals have beentreated effectively without side effects when given NAC.