Carlson Mild-C Crystals Vitamin | 6 oz Powder | Vitamin C. Gluten, citrus and preservative freeĀ o Non acidic and mild on the stomach o Dissolves easily o Carlson Mild-C Crystals Vitamin | 6 oz Powder | Vitamin C o Sold by Swanson Vitamins... - Carlson Mild-C Crystals Vitamin | 6 oz Powder | Vitamin C.