Vitamin C Supplements Compared
This comparison looks at label clarity, vitamin C amount disclosure, form transparency, testing status, additives, serving practicality, and price per 500 mg vitamin C across five vitamin C product reviews. Default sort reflects SuppCheckr weighted scores — not medical recommendations and not suitability for any specific condition.
Default table order is based on SuppCheckr weighted criteria scores, not a ranking of which product is right for every person or any medical use case. SuppCheckr does not rank vitamin C products for colds, flu, COVID, cancer, immunity boosting, skin outcomes, pregnancy, children, or any medical condition. Filter and re-sort by price per 500 mg vitamin C or testing status to match your own label and sourcing priorities.
Last updated: 2026-07-07 · Last reviewed: 2026-07-07
How to use this comparison
This table is a label and sourcing tool — not a medical recommendation. Scores summarize dose transparency, form clarity, testing documentation, additives, and dated manual price context using our methodology. They do not determine which product is right for you or suitable for any health condition. Use filters to re-sort by price per active dose or testing status when those criteria matter more to you.
Scores use the vitamin C scoring profile (vitamin C dose transparency, form clarity, label clarity, evidence alignment and claim conservatism, third-party testing documentation, dated price per 500 mg vitamin C, formula quality, additives, serving practicality, and brand transparency). Table order defaults to overall score high to low. Narrow criterion labels below each product name reflect specific supported label attributes — not broad recommendations or condition-specific winners. Scores are not medical recommendations and do not determine which product is suitable for a specific condition. Consult a qualified healthcare professional before using vitamin C supplements, especially if pregnant, nursing, under 18, prone to kidney stones, managing kidney disease, taking medication, or managing a medical condition. See /methodology for weight details.
Read scoring methodology · Vitamin C ingredient reference · Buying guide
Comparison caveats
- Nutricost Vitamin C Powder third-party testing remains claimed unless a public COA or certificate URL is captured. Powder taste and GI tolerance vary; confirm container weight (0.5 lb, 1 lb, 2 lb) before purchase.
- Nature Made Extra Strength Vitamin C 1000 mg displays a USP Verified badge on the Target listing for UPC 031604014896, but Phase 8G USP Verified Products Program database search found no matching entry — testing status is claimed, not verified. Brand product page showed discontinued status during Phase 8E research; label locked via retailer listing. Tablet includes polyethylene glycol and other excipients.
- Nutricost Buffered Vitamin C Supplement Facts (official brand image, Phase 8G) list vitamin C as sodium, calcium, and magnesium ascorbates with disclosed mineral amounts. Two capsules per serving. Buffered gentleness or absorption marketing is not endorsed by SuppCheckr.
- LivOn Lypo-Spheric Vitamin C has elevated absorption/delivery marketing on the brand site — SuppCheckr scores label clarity, not absorption superiority. Official brand-hosted Supplement Facts confirmed in Phase 8G (December 2025 label image). Highest observed price per 500 mg vitamin C in this cluster at cited 2026-07-07 price check. Contains ethanol and soy-derived phospholipids.
- NOW Foods Vitamin C-1000 Veg Capsules have no verifiable third-party testing captured in Phase 8E. Includes citrus bioflavonoids and rutin beyond plain ascorbic acid. Immune/collagen structure-function copy on brand page — SuppCheckr cites label facts only.
- All five products in this comparison have Amazon affiliate CTAs on their product review pages (Phase 9), including LivOn Lypo-Spheric Vitamin C (ASIN B000CD9XGC). Affiliate disclosure appears near product CTAs — not in this table.
- Phase 8E price context (2026-07-07): Nutricost Powder $13.97, NOW $14.99, Nature Made Target $15.29, Nutricost Buffered $14.97, LivOn $42.95. Verify current price at the retailer before purchase.
| Product | Brand | Score | Price / 500 mg | Price / serving | Testing |
|---|---|---|---|---|---|
Nutricost Vitamin C Powder (1 lb)
| Nutricost | SuppCheckr Score87/100 | $0.01 | $0.03 | Claimed |
NOW Foods Vitamin C-1000 Veg Capsules (100 Veg Capsules)
| NOW Foods | SuppCheckr Score79/100 | $0.07 | $0.15 | Unknown |
Nature Made Extra Strength Vitamin C 1000 mg Tablets (100 Tablets)
| Nature Made | SuppCheckr Score77/100 | $0.08 | $0.15 | Claimed |
Nutricost Buffered Vitamin C Capsules (120 Capsules)
| Nutricost | SuppCheckr Score77/100 | $0.13 | $0.25 | Claimed |
LivOn Laboratories Lypo-Spheric Vitamin C (30 Packets)
| LivOn Laboratories | SuppCheckr Score72/100 | $0.72 | $1.43 | Unknown |
Manual dated prices only — not live retailer prices. Last checked 2026-07-07. Check current price at the retailer.
Individual product reviews
Sources
- SuppCheckr scoring methodology — SuppCheckr (internal_editorial)
- Vitamin C — Health Professional Fact Sheet — NIH Office of Dietary Supplements (NIH)
- FDA — Dietary Supplements — U.S. Food and Drug Administration (FDA)
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