It's the rose hips
Posted by Reviewer2336631 on Nov 27, 2011 | Verified Purchase
Ascorbic acid is the same for all brands, but I trust Source Naturals to get fresher, good quality rose hips. They're at least as important, if not more than the pure vitamin C itself. I've taken this daily for about 20 years.
Posted by Reviewer1758895 on Nov 28, 2011 | Verified Purchase
1-2 of 2 total