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🛡️ Stay ahead with steady Vitamin C power—because your immune system deserves the best!
21st Century Vitamin C 500mg Prolonged Release Tablets provide a scientifically designed slow-release formula that delivers antioxidant and immune support throughout the day. With 110 gluten-free, vegan tablets free from artificial additives, this trusted supplement from a 30-year industry leader ensures pure, effective Vitamin C absorption to keep you feeling resilient and energized.
| ASIN | B00166U2UA |
| Age Range Description | Adult |
| Allergen Information | Gluten Free |
| Best Sellers Rank | #60,573 in Health & Household ( See Top 100 in Health & Household ) #356 in Vitamin C Supplements |
| Brand | 21st Century |
| Brand Name | 21st Century |
| Color | No Color |
| Container Type | Bottle |
| Customer Reviews | 4.6 out of 5 stars 397 Reviews |
| Diet Type | Gluten Free |
| Dosage Form | 500 |
| Flavor | Unflavored |
| Global Trade Identification Number | 00740985211908 |
| Item Dimensions | 2.38 x 1.75 x 3.75 inches |
| Item Form | Tablet |
| Item Highlight | Vitamin C 500 mg Time-Release Tablets, Immune & Antioxidant Support, Steady All-Day Release, Gluten Free |
| Item Weight | 4.16 ounces |
| Manufacturer | 21st Century |
| Manufacturer Part Number | 21190 |
| Material Type Free | Gluten Free |
| Model Name | ury C 500 mg Prolonged Release Tablets, 110 Count (21190) |
| Model Number | 21190 |
| Number of Items | 1 |
| Primary Supplement Type | Vitamin C |
| Product Benefits | Immune Support |
| Specific Uses For Product | Antioxidant, Immunity |
| UPC | 740985211908 |
| Unit Count | 110 Count |
J**E
Time Release is better.
Prolonged release or time release is a good thing for many vitamins. It's getting the C over a space of a few hours vs getting all 500mg all at once and pissing it out before you can absorb it. I've been buying this brand for years and C is a good anti-oxident in general, not just for colds or cold season.
N**.
Quality product, good price point.
Extended release Vitamin C is the only way to go. Your body can only absorb so much at a time, and I don't need to waste money. Consistently high quality at a competitive price. I will buy again!
A**O
21st Century prolonged release Vitaminas C
Recommended by Pharmacist due to excellent quality product. Easy to swallow, good value for price and larger bottles available on Amazon than in Pharmacy.
D**G
I buy consiy
Great product
C**I
These work well and I highly recommend them.
These work well and I highly recommend them.
H**S
21st Century C 500 mg
Nothing wrong with them I just couldn't handle 500mg they gave me migraines so I had to stop taking them. The company is great, easy to swallow, value for the money and a nice size.
N**O
Reviews from people thinking these are CHEWABLE, THEY ARE NOT! YOU SWALLOW THEM!!!
I like this brand & needed more Vitamin C so ordered them straight away. Then I read the reviews & people who obviously didn't read the product page NOR the bottle when it arrived, wrote reviews about the bad flavor & didn't dissolve like other Vit. C ! NOWHERE ON THE PAGE OR THE BOTTLE does it say Chewable! It says "Take 1 tablet with a meal". They are a pale peach color & are smooth and hard. READ THE LABEL FOLKS! These are very good vitamins at a very good price!
S**I
Easy to swallow.
These are terrific. Very easy to swallow with no yucky aftertaste. I used to take oblong larger ones that tasted horrible and were hard to swallow. I will definitely be buying these in the future. Thanks Amazon
W**T
Useful
Nice, helpful
D**O
High satisfaction
Fast delivery , very good prices , good quality supplements, excellent customer care.
M**M
Genuine Product
Was hesitant to buy medicine online for various reasons, expiry, packaging material etc. But took a chance and ordered anyway, turned out to be a genuine product. Thank you.
I**N
I LOVE IT
For someone who has hyperacidity, it’s perfect for me. I love that it’s prolonged release. It’s really worth the purchase
V**L
no complaints but...
only complaint is it gives little burning sensation in the stomach is taken first thing in the morning before food [as some expert suggests] i think best idea is too to take after breakfast
Trustpilot
1 month ago
2 weeks ago