I've used megadoses of vitamin c for years. When I'm at home I use a powder, but at work I carry these. Truly an amazing product! They are formulated to break down quickly, without stomach upset, so they can be taken on an empty stomach if desired. I believe that nutritional supplements saved my life. I've tried a lot of products, and I know what works and what doesn't. My reviews are honest, straighforward, and based on my experience. Read my other reviews to quickly learn from my three decades of research and experimentation.