NOW Foods is broadly trusted as a quality, budget-friendly supplement brand, though counterfeit concerns on Amazon temper confidence.
NOW Foods C-1000 delivers 1,000 mg of vitamin C per tablet as ascorbic acid, a water-soluble antioxidant that supports immune function, collagen synthesis, and overall oxidative balance. It's a straightforward, high-potency option for adults looking to maintain adequate vitamin C intake through a simple, no-frills daily supplement.
Why It's Worth Considering: NOW Foods formulates this at a clinically common 1,000 mg dose with added rose hips, providing a familiar, well-tolerated form of ascorbic acid at accessible pricing.
| Feature | Ascorbic Acid | Buffered (Ascorbate) | Liposomal | Ester-C |
|---|---|---|---|---|
| Bioavailability | Good (standard) | Good (gentler) | Excellent (2-3x) | Good |
| GI Tolerance | May cause acidity | Very gentle | Excellent | Gentle |
| Best For | Budget, general use | Sensitive stomachs | Maximum absorption | Sustained release |
| Price | $ | $ | $$$ | $$ |
For maintenance, 500-1000mg daily is sufficient. For immune support during illness, 2000-4000mg in divided doses. The body can only absorb ~200-500mg at once, so split large doses throughout the day. Liposomal forms bypass this limit with 2-3x better absorption.
For most people, standard ascorbic acid at 500-1000mg is sufficient. Liposomal vitamin C is worth the premium if you need higher therapeutic doses (2000mg+) without GI distress, or if you have absorption issues. Studies show liposomal C achieves 2-3x higher blood levels than standard forms.
Vitamin C is water-soluble and excess is excreted in urine. The main risk of high doses (3000mg+) is GI distress (diarrhea, cramping) and increased oxalate production, which may contribute to kidney stones in susceptible individuals. The 'bowel tolerance' test — increasing dose until loose stools, then backing off — is a common practitioner approach.
Meta-analyses show regular vitamin C supplementation reduces cold duration by 8% in adults and 14% in children, and reduces severity. It does NOT prevent colds in most people, but it does in those under physical stress (athletes, military). Taking vitamin C after cold symptoms start has minimal benefit — daily prevention is key.
Take with food to reduce potential stomach acidity. Morning dosing is common since vitamin C may mildly increase alertness. If taking large doses (1000mg+), split into 2-3 doses throughout the day for better absorption and sustained blood levels.
Apotheca is analyzing ingredient interactions, stacking compatibility, and timing recommendations for NOW Foods - C-1000 Tablets. This data will be available soon.
† These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
