Nature Made
A solid, affordable vitamin C supplement with pharmaceutical-grade testing, though it uses synthetic ascorbic acid rather than whole food sources.
Evaluated Feb 15, 2026
·AI-evaluatedGarden of Life
Whole food vitamin C from organic fruits with natural cofactors for better absorption.
Thorne
Pharmaceutical-grade buffered ascorbate that's gentler on the stomach with enhanced absorption.
Sunfood
Naturally sourced from camu camu fruit with 30x more vitamin C than oranges plus natural bioflavonoids.
USP verified synthetic ascorbic acid with minimal fillers
USP verified for purity, potency, and quality standards
Standard ascorbic acid form, adequate but not enhanced absorption
Clear labeling with complete ingredient disclosure