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Vitamin C 1000mg – Ultra Pure, Non-GMO | 180 Vegetable Capsules
£18.50
Ultra-pure non-GMO Vitamin C !
This high-potency vitamin C supplement from GreenVits provides 1,000mg of ultra-pure, ascorbic acid in easy-to-swallow soft capsules, suitable for daily use.
The capsules contain - ultra-pure - non-GMO - ascorbic acid which has been carefully sourced and tested, ensuring high quality and purity.
Each bottle contains 180 vegetable capsules, offering a convenient and reliable source of this essential vitamin. The capsules are water soluble so you can dissolve them in water or a drink, or even open the capsules and pour the powder into the drink.
The ascorbic acid in this product is chemically identical to that found naturally in foods and is widely used in supplements.
Half-Life in the Body
Vitamin C has a variable half-life depending on plasma levels and dose. At typical dietary or supplemental levels, it ranges from hours to days (e.g., ~2 hours at high plasma concentrations from large doses, or 10–20 days for body pool turnover at lower levels). The body tightly regulates levels, with excess excreted in urine.
Best Time of Day to Take It
Vitamin C can be taken at any time of day that fits your routine. Many people prefer taking it with meals to minimize potential stomach irritation, especially at higher doses. Splitting doses throughout the day (e.g., morning, noon and evening) may help maintain steady levels.
Optimum Dose
The Recommended Dietary Allowance (RDA) for adults is 90mg/day for men and 75mg/day for women (higher for smokers, pregnant, or breastfeeding individuals).
Higher supplemental doses (e.g. 1,000-10,000mg/day) are common for general support, but consult a healthcare provider for personalized advice.
Long-Term Safety
Vitamin C is generally safe for long-term use at doses up to the tolerable upper intake level of 2,000mg/day for adults. Higher amounts may cause mild gastrointestinal effects (e.g., diarrhea or nausea), but serious issues are rare in healthy individuals.
Any Interactions with Other Supplements
Vitamin C may enhance absorption of non-heme iron when taken together.
Very high doses could interact with certain supplements (e.g., potentially affecting B12 or copper levels). Always consult a healthcare provider if combining with other supplements or medications.
Top 3 References
- Linus Pauling Institute – Oregon State University
Comprehensive overview of vitamin C forms, pharmacokinetics, and safety.
https://lpi.oregonstate.edu/mic/vitamins/vitamin-C - NIH Office of Dietary Supplements – Vitamin C Fact Sheet
Evidence-based details on forms, RDAs, ULs, and interactions.
https://ods.od.nih.gov/factsheets/VitaminC-HealthProfessional/ - PubMed – Pharmacokinetics of Vitamin C
Insights into absorption, half-life, and body regulation.
https://pubmed.ncbi.nlm.nih.gov/18450228/
These statements have not been evaluated by the USA Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.