Reviews 21st Century Vitamin C 500mg Slow Release – Real User Experiences
Read real user reviews and experiences for 21st Century Vitamin C 500mg Slow Release, including opinions, usage feedback, and everyday insights.

21st Century Healthcare
Seller ratings 99.5%
Review (989+ user reviews)
See more5.0
/5
989 Ratings
S
2****s
Aug 28, 2026
Bought this because doctor said I am very tense. First time taking this and able to sleep very well. Hopefully my body tension will improve over time. Price is acceptable after some deduction from Lashcash.



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A
4****a
Oct 13, 2026
Boost your immune system with this!, Slow release for better absorption and long-lasting effect, Provides 500mg of Vitamin C, Trusted brand, Essential for collagen production,



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R
r****5
Oct 25, 2026
good and value for money. repeated purchase for many occasions. Perfect for daily vitamin C intake!,
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G****s
Jun 05, 2021
This is a slow release vit C. Not buffered so better to eat after meal. Thanks.
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y****6
Dec 18, 2025
Have been taking 21st Century supplements for many years. Price is reasonable and the supplements are good for maintaining immunity. Got these during 12.12 sale which is cheaper than buying from retail stores





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X****m
Oct 28, 2025
💰Price:great \n 🔍Quality:great \n 🧪Ingredients:vitamin c\n fast packed and delivery \nthe most trusted supplement brand





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s****9
Apr 16, 2024
Very fast delivery, I think within 2 days after my order. Have got a good offer with cash back return👍👍
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4****e
Apr 27, 2024
first purchase I hope it's good cos I had purchased another brand recently and it's not fresh 😕 \nthis one looks good 😊
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x****4
Feb 01, 2025
fast delivery \nreceived in good condition \nexpiry date 2027\nbeen taking slow release vitC which is good for general health
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9****n
Aug 02, 2025
Value for money because bought during promotion, and also the products are of trusted quality. Most importantly after taking for some time I can feel the difference and know that they are working.
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H****r
Aug 15, 2025
Repeat order. Great antioxidant. I like the show release function but I am not sure for how long it takes to stay working in the body.
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3****g
Oct 29, 2025
Effective and convenient!, Easy to swallow tablets!, \nGood deal and delivery was fast.\nItems well packed.
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J
j****5
Nov 15, 2025
High-quality vegetarian vitamin C!, Boost your immune system with this! Good discount on 11.11. Long expiry date
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H****r
Dec 16, 2025
Have been taking this for quite awhile, and find that it is able to boost the immune system. This is a repeat purchase. It is value for money to buy during promotion.
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F
3****f
Mar 19, 2026
Perfect for daily vitamin C intake! It boosts your immune system with this! Reliable vegetarian vitamin C!\n\nfast delivery service too
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C
C****y
Mar 24, 2026
Perfect for daily vitamin C intake!, Trustworthy brand for vitamin supplements!, Boost your immune system with this!, Great for maintaining overall health!,
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E****k
Mar 28, 2026
Been buying this brand for some time. Delivery was super fast—ordered late Thursday evening and it arrived by early Saturday afternoon. Very worthwhile during the sales period. Expiry date is long, until June 2028.\n
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6****f
Mar 31, 2026
Received the items in good condition. Expiry date in July 2028. Very good price compared to previous purchases. Thanks!
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M
m****0
Apr 01, 2026
💰Price:Good Discount with Coins\n 🔍Quality:High\n 🧪Ingredients:Safe and effective\n \nBought this for its slow release for better absorption. Taken this before regularly, safe and trustworthy brand. Bought extra to keep stock since it is on offer. Long expiry till Jun 2028. Seller packs fast and courier delivers fast.
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z****8
Aug 18, 2026
💰Price:good\n 🔍Quality:good\n 🧪Ingredients:good\n High-quality vegetarian vitamin C!, Great slow-release formula!, fast delivery.
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9****k
Oct 14, 2026
ordered on 13th and received on the 14th of October. very fast delivery. brought for restock. expiry date on 2028.
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*****
Jan 20, 2024
Happy buyer here! Fast delivery with great packing protection. My repeat order of this product. Buy with confidence 👍. Thanks to seller for the free gifts 🥳.
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A
a****4
Oct 18, 2024
Happy buyer here! Delivery was fast, packing protection was sufficient. This is a good product, my repeat order of many times, buy with confidence.




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L****e
Jul 28, 2025
Items arrived very quickly and in good condition. Good 2 years expiry date till 2027.
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I****c
Sep 29, 2023
My first time purchase. Delivery was fast, packing protection was sufficient. Product was MADE IN U.S.A. Expiry till April, 2025.
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N****w
Dec 16, 2025
Repeat order. Boost your immune system with this. Great for maintaining overall health. Slow release for better absorption.
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J
3****j
May 30, 2026
💰Price:Good discount with Laz coins\n 🔍Quality:👍\n Great slow-release formula. Slow release for better absorption. Seller packs very fast, and courier delivers fast too.
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F****p
Sep 17, 2026
💰Price:Value for $\n 🔍Quality:High-quality vegetarian vitamin C!\n 🧪Ingredients:Vit C from ascorbic acid\n \nPerfect for daily vitamin C intake and slow release.\nFast delivery direct from 21st century Singapore.
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5****w
Sep 06, 2026
Quality is good. \nMy repeated and 3rd order. \nTake to maintain my immunity system.





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B
6****b
Dec 28, 2021
Buy for my parents. Both Vitamin C and One a Day come together. Well packed and free one Calendar. Will buy again.
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Q
3****q
Jul 30, 2023
long expiry date:19 April 2025. Received in good condition.




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W****a
Nov 25, 2023
thank you, seller, for the fast and effective response for shipment for the item. THANK you for the free calendar.. Happy year.
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J
J****d
Apr 19, 2024
Second order within 3 days and received my second order also within 3 days after I place order. Fast and efficient 👍👏



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x****3
Apr 23, 2024
Easy to swallow tablets!, have order many time for myself and my family. Deliver fast in about 3 days after I place the order. Got it at a good price💪👍




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W****a
Dec 03, 2024
Slow release for better absorption!, Great slow-release formula!, Effective and convenient!, \n 🔍Quality: okHigh-quality vegetarian vitamin C!,



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V****n
Apr 01, 2026
very fast and safe delivery , good price, reliable seller. I consume this product for years already. good quality and effective. will purchase again if the price is good.
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*****
Apr 22, 2026
Ordered on 21st and received on the 22nd. super fast delivery. brought for restock.
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8****z
Sep 08, 2025
🔍Quality:good\n Delivered in good condition as these are bubble wrapped. Love the slow releasr and 500mg dosage!.



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C****y
Sep 13, 2025
Repeated order many timesPerfect for daily vitamin C intake!, , fast delivery.Effective and convenient!, Easy to swallow tablets!, High-quality vegetarian vitamin C!, \n\nExpiry date: 22/07/2027



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7****i
Oct 26, 2025
Repeat purchase of essential vit C. This is slow release so you’re ensured of Vit C through the day. Most vit C are water soluble and quickly pass out with pee. It’s way cheaper and more convenient to buy online. Each bottle has 60 tablets enough for 2 months so grab them. It is my fav vit C brand. Don’t need to waste money on more expensive brands cos Vit C is Vit C. Have trusted this brand for decade.
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D
D****g
Nov 25, 2025
i ordered wrongly, supposed to be chromium. Easy to swallow tablets!, Slow release for better absorption! \ncheck the pop up sale in checkout
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m****0
Nov 30, 2025
💰Price:Expensive products haha\n 🔍Quality:Don't know yet.\n 🧪Ingredients:Not an expert on ingredients.\n \nIf it does work, then I can buy it again hahaha...



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*****
Dec 13, 2025
Easy to swallow tablets!, Great for maintaining overall health!, Great slow-release formula!, High-quality vegetarian vitamin C!,



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K
k****7
Dec 17, 2025
Very good offer during sales. Good quality supplement with very affordable price. Have been taking to boost immunity to prevent flu during this peak of flu season. 👍🏻



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9****n
Dec 23, 2025
first time buying from lazmall. price is much lower than in stores. fast delivery and received in good condition.
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F****q
Jan 08, 2026
Easy to swallow tablets, great slow-release formula. Trustworthy brand for vitamin supplements, fast delivery. Expiry in 2027.
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*****
Mar 27, 2026
This is affordable ! Suitable for my needs & slow release . \nVery very fast delivery 👍 \nVery good price during promotion




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A
a****s
May 23, 2026
Perfect for daily vitamin C intake. Great slow-release formula. Love the 500mg dosage.\nEasy to swallow tablets, my child can swallow well.\n\nfast delivery service too 😀



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s****5
Aug 26, 2026
💰Price:good price point \n \nPerfect for daily vitamin C intake! Great slow-release formula, trustworthy brand



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G****3
Sep 20, 2026
Speedy delivery, genuine product, and a very friendly seller! 🚚✨\nTop-notch service, one of the best online platform. Very professional, helpful, and delivers brand new authentic products. Highly recommended! 👍



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