I believe in megadoses of vitamin c, and have been taking it for over three decades. During this time I've experienced a dramatic turnaround in my health. Trace Minerals Research Electrolyte Stamina Power Pak is a great source of vitamin c as well as several important minerals. Perfect for adding to a water bottle at work, in the gym, while camping, etc. The grape taste is nice and, because it's buffered, there no chance of stomach upset. 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. Iherb is the place I trust for all my health needs: low prices, huge selection, unbeatable service, and fast, free shipping. You can't go wrong!