Page 1 - Reviews - 21st Century, C-1000, Prolonged Release, 110 Tablets - iHerb
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PK
4.8
Based on 2,488 Ratings
5 Stars
2,041
4 Stars
324
3 Stars
91
2 Stars
17
1 Stars
15
Write a Review

4.8
Based on 2,488 Ratings
5 Stars
2,041
4 Stars
324
3 Stars
91
2 Stars
17
1 Stars
15

Most helpful positive review

iHerbCustomer
Posted on Sep 12, 2022
64
0
0
6,619
Excellent !

Fine. Shopping here is a pleasure. Very high quality, fast delivery. I sincerely recommend.

Global reviews (2,488)

Product reviews solely reflect the views and opinions expressed by the contributors and not those of iHerb. iHerb does not verify or endorse any claims made in these reviews. Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition. Show more
Verified Purchase
Rewarded Review

I really like the 21 Century prolonged-release C-1000 pills. even though they are large, they have a slick surface, making them easier to swallow.

iHerb Customer
Gold
Posted on Mar 16, 2023
431
0
4
14
Verified Purchase
Rewarded Review

21st Century is a brand that offers a wide range of affordable supplements and vitamins to support overall health and wellness. One of the standout features of this brand is their commitment to making quality supplements accessible to everyone. When it comes to taste, their products range from unflavored to flavored, with options for every preference. The size and packaging of their products are convenient and easy to use, making them suitable for everyday use. The benefits of 21st Century's products are numerous, ranging from supporting immune function and digestion to promoting healthy energy levels and mental clarity. Their products are suitable for people of all ages and can address various health concerns, such as stress, fatigue, and nutrient deficiencies. 21st Century's products are generally safe for most people to use, but those with specific health concerns or on particular diets should consult with a healthcare professional before taking any supplements. Overall, 21st Century is a reliable brand that offers effective and affordable supplements and vitamins to support overall health and wellness.

Posted on Mar 6, 2023
12
0
0
0
Verified Purchase
Rewarded Review

I've been using this for years now and its really great. Definitely boosts my immunity against the multiple germs the kids bring home from school. I typically rotate between 500 mg and 1000 mg doses depending on the season and whether or not ill be travelling. The prolonged release option is the best. Great quality, no after taste, no acidity, large package.

Posted on Sep 1, 2022
40
0
0
2
Verified Purchase
Rewarded Review

Quite the efficient little gem this turned out ti be. I really notice a difference whenever to stop taking it and I tend ti feel significantly more energised whenever k do take it. I take two capsules a day on an empty stomach, first in the morning then in the early evening. Highly recommend.

Posted on Aug 27, 2022
39
0
2
20
Verified Purchase
Rewarded Review

The quality of 21st Century vitamins are excellent and effective. I have been using 21st Century vitamins for more than 25 years and will continue to do so. This Prolonged Release Vitamin C is very gentle on the stomach.It really helped my whole family with our immunity during this pandemic. I always have at least two bottles on standby.

Posted on Aug 21, 2022
50
0
1
23
Verified Purchase
Rewarded Review

Quite the efficient little gem this turned out ti be. I really notice a difference whenever to stop taking it and I tend ti feel significantly more energised whenever k do take it. I take two capsules a day on an empty stomach, first in the morning then in the early evening. Highly recommend.

Posted on May 29, 2022
39
6
2
11
Verified Purchase
Rewarded Review

Nowadays, its very important to take a good quality antioxidant during this pandemic. This vitamin c is excellent and good for my stomach, it has only mild sour taste but its ok. Ingredients are safe, size is perfect if you have difficulty swallowing because its small only. It has 1000 mg which is recommended for boosting immune system. natural acidity since it is vitamin c. Simple packaging, effective and potent.

Posted on Apr 8, 2022
87
87
2
11
Verified Purchase
Rewarded Review

1000 mg great help for the immunity. It has antioxidant effect. Size is a bit big but easy to swallow ..Cheap price but really effective. best quality.

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Posted on Jan 17, 2023
31
0
3
4
Verified Purchase
Rewarded Review

PROLONGED RELEASE IS THE QUALITY I WANTED. THE INGREDIENT IS SIMPLE BUT ENOUGH EFFECT FOR MY IMMUNITY CARE. THE SIZE OF THE TABLETS ARE HUGE BUT I DONT MIND. NO PROBLEMS WITH MY STOMACH.

Posted on Dec 29, 2022
4
0
0
0
Verified Purchase
Rewarded Review

Vitamin C 1000 mg helps strengthen the immune system. It can also act for a long time throughout the day, making the performance even better.