Description
Thorne’s formula combines vitamin C with citrus flavonoids from oranges, which the brand describes as the way the two occur together in nature. It is a premium brand with a strong focus on testing.
How it compares
The listing does not state the milligrams per capsule, so check the supplement facts in the images on Amazon.ca. Compared with the NOW C-1000 with bioflavonoids, Thorne is usually the more premium choice; value per serving depends on the dose, so compare servings, not bottles.
Rose hips and citrus bioflavonoids are natural companions of vitamin C in food. In supplements, the amounts added are usually small next to the vitamin C itself, so the decision mostly comes down to dose, format and whether you value the addition enough to pay for it.
What the label says
What the brand says:
- Vitamin C combined with natural citrus flavonoids for immune and antioxidant support.
- Promotes collagen production for skin, nails and hair.
- Described as supporting healing after surgery or injury.
- Third-party tested and certified for label accuracy and contaminants.
- NPN 80019400.
Who it may suit
People who value independent testing and who want vitamin C with flavonoids rather than plain ascorbic acid may find it worth the premium. If skin is your focus, also read our guide to vitamin C serums.
Tips for taking vitamin C
If plain vitamin C upsets your stomach, take it with a meal. Splitting a larger amount into a morning and an evening dose is a common way to make it easier to tolerate. Keep your total from all sources under 2,000 mg a day for adults, the tolerable upper intake level set out by Health Canada and the U.S. National Institutes of Health. People with a history of kidney stones should be cautious with high-dose vitamin C, and a pharmacist can check it against any medication you take.
General information, not medical advice. As an Amazon Associate, VitaminC.one earns from qualifying purchases.



