Ascorbic Acid vs Sodium Ascorbate: Key Differences for Better Vitamin C Choice
Ascorbic Acid is pure vitamin C in its acidic form; Sodium Ascorbate is the same molecule buffered with sodium, turning it into a neutral, less-acidic salt.
Shoppers stare at two nearly identical bottles, both claiming “1,000 mg vitamin C.” One lists Ascorbic Acid, the other Sodium Ascorbate. The names sound interchangeable, but the second option quietly promises “gentle on the stomach,” making many switch without knowing why.
Key Differences
Ascorbic Acid is acidic (pH ~2.5), delivers 100% vitamin C by weight, and can irritate sensitive stomachs. Sodium Ascorbate is alkaline (pH ~7.4), provides ~89% vitamin C plus 11% sodium, and is easier on digestion.
Which One Should You Choose?
Pick Ascorbic Acid for maximum potency and no sodium load; choose Sodium Ascorbate if you have reflux, take high doses, or need a gentler option for daily megadosing.
Examples and Daily Life
Effervescent tablets often use Sodium Ascorbate to avoid the tart bite. Chewable “orange bursts” typically rely on Ascorbic Acid for flavor punch. Check labels—same vitamin, different feel.
Is Sodium Ascorbate still vitamin C?
Yes. Once dissolved, it releases identical ascorbate ions your body uses just like those from Ascorbic Acid.
Can I switch without adjusting dose?
Almost. 1,000 mg Sodium Ascorbate gives ~890 mg vitamin C, so add 10–12 % if you want the exact milligram match.