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Orders are prepared in 1–3 business days and arrive 3–7 business days after they ship. Alaska, Hawaii, Puerto Rico, U.S. territories and APO/FPO/DPO addresses can take longer. You get a tracking number by email as soon as your order ships.
Free returns within 30 days of delivery: we email you a prepaid return label, no reason needed. Items must be unopened, with the manufacturer or tamper-evident seal intact, in their original packaging. Opened, used or partially consumed vitamins, minerals and supplements, items with broken or missing seals, and gift cards can't be returned. Damaged, defective, incorrect or expired items are always covered. Refunds go back to your original payment method within 10 business days of approval.
If you have a question about an item, its label or your order, email sales@naturalvitaminsonline.com with the product name or order number. We answer every message by email and reply within 1 business day (Monday to Friday, Eastern Time).
Talk to your doctor or pharmacist before starting a supplement, especially if you're pregnant or nursing, take medication, or have a medical condition.
†These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.
Talk to your doctor or pharmacist before starting a supplement, especially if you're pregnant or nursing, take medication, or have a medical condition.
21st Century Vitamin C-500 is a prolonged-release vitamin C tablet designed to support antioxidant activity and a healthy immune system, with 500 mg of vitamin C per tablet.
For shoppers looking to add vitamin C to their routine, this formula combines antioxidant and immune support with a prolonged-release format. Its dietary attributes and listed exclusions make it easy to identify whether it aligns with your preferences. The product is intended for nutritional supplementation, not as a treatment for illness.
It provides vitamin C for antioxidant support and to support a healthy immune system. Vitamin C is an antioxidant nutrient that helps neutralize free radicals, while the tablet’s prolonged-release design releases nutrients into the body over an extended period.
Each container includes 110 tablets of 21st Century Vitamin C-500. Each tablet provides 500 mg of vitamin C, making the amount per tablet clear for shoppers comparing supplement labels.
21st Century Vitamin C-500 is gluten free, suitable for vegans, and non-GMO. It has no added sugar, salt, yeast, preservatives, or artificial flavors. These details help shoppers assess the formula against dietary preferences and ingredient exclusions.
21st Century HealthCare guarantees label potency and describes its supplements as 100% safe and made with the purest ingredients. These are the manufacturer’s stated quality commitments; they do not change the product’s role as a vitamin C supplement.
This tablet is suited to adults seeking a vegan-suitable, non-GMO vitamin C supplement with a prolonged-release format and clearly defined tablet strength. It is a nutritional supplement for antioxidant and immune support, not a medicine for treating disease.
Stearic acid
Q: How much vitamin C is in each 21st Century Vitamin C-500 tablet?
A: Each 21st Century Vitamin C-500 tablet provides 500 mg of vitamin C, and the container includes 110 tablets.
Q: What is 21st Century Vitamin C-500 designed to support?
A: 21st Century Vitamin C-500 is designed to provide antioxidant support by helping neutralize free radicals and to support a healthy immune system.
Free standard shipping on every order to U.S. addresses, with no minimum. Orders are prepared in 1–3 business days and arrive 3–7 business days after they ship. Alaska, Hawaii, Puerto Rico, U.S. territories and APO/FPO/DPO addresses can take longer. You get a tracking number by email as soon as your order ships. See shipping details.
Free returns within 30 days of delivery. Free returns within 30 days of delivery: we email you a prepaid return label, no reason needed. Items must be unopened, with the manufacturer or tamper-evident seal intact, in their original packaging. Opened, used or partially consumed vitamins, minerals and supplements, items with broken or missing seals, and gift cards can't be returned. Damaged, defective, incorrect or expired items are always covered. Refunds go back to your original payment method within 10 business days of approval. See returns & refunds.
Damaged, defective, incorrect or expired item? Email your order number, a photo and the lot/expiration details to sales@naturalvitaminsonline.com and we will arrange a replacement or refund; this is always covered. Please report visible shipping damage within 7 days of delivery.
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