NutriBiotic Ascorbic Acid Vitamin C Powder, 2.2 Lb | Pharmaceutical Grade L-Ascorbic Acid, 2000 Mg Per Serving | Essential Immune & Antioxidant Collagen Support Supplement | Vegan, Gluten & GMO Free

Customers find this vitamin C powder to be a quality supplement that works effectively, particularly noting its benefits for skin and joints. Moreover, the powder dissolves easily in water and nut butter formulations, and customers appreciate that it doesn't cause stomach upset. Additionally, they value its immune-boosting properties and find it easy to use, with one customer mentioning it can be added to juice or smoothies for kids. The taste receives mixed reactions, with some enjoying the sour flavor while others find it too bitter.