Immunity, Ascorbic Acid with Bioflavonoids, 2.2 lb (1 kg)

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4.8

Based on 2,370 ratings

2,030

229

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What customers say

Top positive review

PaleoLowCarber

Silver

Posted on Aug 28, 2013

New Zealand

120

Dissolves easily when stirred

I'm not sure if the reviewers did stir properly in water before ingestion, for mine they do dissolve, and quite easily too. I use normal temperature water and it has been 3-4 bottles since I first started. I like the fact that they don't use corn based Vit-C, and is clean, unlike other commercial Vit-C supplements. Keep it up, NutriBiotic! Oh yes, and it's with Bioflavonoids which is an important component for maximum absorption of Vit-C in our body. Best Vit-C product I've purchased so far.

(2,335)

Thutrang

Posted on Jul 26, 2023

Vietnam

342

353

Verified purchase

Acid, additives, ascorbic, bay,brand , chug, blown, bowel, colds, collagen

iHerbCustomer

Posted on Aug 25, 2024

United States

Vitamin C with Collagen

Verified purchase

I’ll be honest I didn’t really read the label fully cause I didn’t know this product had collagen in it . Best mistake I ever made! My body needs a lot of vitamin c but I can take certain brands as they make my stomach upset but this one is perfect no upset stomach and the added minerals and collagen are an added bonus. Great taste and little sour to me so I add it to my coconut water and no problem! Tons of energy with immunity boost and antioxidant’s in here for it and will purchase again

Adam Sun

Gold

Posted on Dec 29, 2023

France

418

375

Great Vitamin C form

Verified purchase

Glad to see a vitamin C powder form product in combination with bioflavonoids, much better than ascorbic acid alone. And as it's adviced to take a flavonoid antioxidant in combination with other flavonoids to maximize absorption rather than alone, this product is very useful if I want to combine with an other antioxidant (like Quercetin, Rutin, Resveratrol, etc)

iHerb customer

Posted on Apr 4, 2026

Australia

109

Great composition

Verified purchase

I choose this composition due to the flavanoids included as improves bioavalability quality. good potency and I mix 1/4-1/2 tsp of the powder into my electrolytes minerals in the morning, as the minerals buffer the acidity of the Citric Acid to make it gentler on stomach. Pure, clean, No sweeteners, so tastes natural, works well mixed into my electrolytes in water. Useful antioxidant, immunity, Collagen synthesis, etc, and supporting mineral absorption

DogLover

Gold

Posted on Nov 18, 2025

Hong Kong

347

great

Verified purchase

I am glad that the product is pure quality, and the ingredient without added sugar and palm oil and harmful seed oil content in it is what I have been looking for.. Many of the store bought products are so unhealthy and harm health .I am so glad to find iherb, and I already recommended so many people to find healthy products from the website. I feel so surprised that many of them haven't heard this website before .

iHerb customer

Posted on Nov 16, 2025

Japan

Verified purchase

True vitamin C that it is, this one tastes very sour/tart but is excellent to keep handy for Covid times during which I've bought two bottles. My skin does look better in a few days of taking a dose. The inclusion of bioflvonoids here is very clever, as vitamin C exists in nature as a complex, not as an isolated chemical form. Here the effort is a sort of recombination, maybe not as excellent as in a fruit form, but still gives a more natural feel than without.

iHerbCustomer

Silver

Posted on Nov 11, 2025

Singapore

136

Verified purchase

This vitamin C powder is a staple in my morning routine, especially during cold season. I just stir a small scoop into a glass of water for a pleasant, tangy drink that's not too sour. I truly believe it has helped me fight off the bugs my kids bring home from school. It's an incredibly cost-effective way to get a high-quality vitamin C boost.

iHerb customer

Silver

Posted on Oct 24, 2025

Malaysia

234

Verified purchase

This powder is my go-to for a mega-dose of vitamin C whenever I feel a cold coming on. I love that it includes bioflavonoids, which I've read helps with absorption. It mixes easily into water or juice with a pleasantly tangy taste. A single container lasts forever, making it an incredibly cost-effective way to support my immune system.

iHerb customer

Posted on Aug 2, 2025

Switzerland

Great!

Verified purchase

I’ve been using NutriBiotic’s Vitamin C powder with bioflavonoids regularly, and it’s become a dependable cornerstone in my wellness routine. The clean, crystalline powder is easy to mix into water, juice, or smoothies, and the potent combination of pharmaceutical‑grade L‑ascorbic acid with lemon-derived bioflavonoids enhances absorption and antioxidant support. Amazon +9 NutriBiotic +9 Target +9 Users on iHerb praise its quality and effectiveness: “I love this vitamin C, great for immunity and inflammation… The added bioflavonoids make it better utilised by the body and give it a very strong lemony taste…” Target +2 iHerb +2 eBay +2 “Way less acidic and milder for the stomach…” iHerb ✅ Highlights: Highly bioavailable vitamin C: formulated as pure L-ascorbic acid with lemon bioflavonoids for enhanced uptake and antioxidant synergy. eBay +7 NutriBiotic +7 NutriBiotic +7 Gentle on digestion: users note it's milder than plain ascorbic acid formats. eBay +3 iHerb +3 Amazon +3 Bulk size & cost-effective: large 2.2 lb bag delivers value and flexibility—you can tailor your dose easily. Clean and transparent formulation: vegan, gluten-free, non-GMO, with no unnecessary fillers.

iHerb customer

Silver

Posted on Aug 31, 2024

236

Effortless way to support my health.

Verified purchase

NutriBiotic Immunity Ascorbic Acid with Bioflavonoids is a high-quality supplement that has become a key part of my daily wellness routine. The crystalline powder is pure and dissolves easily in water, making it simple to incorporate into my day. The combination of ascorbic acid (vitamin C) with bioflavonoids provides a powerful boost to my immune system, and I’ve noticed a positive impact on my overall health since I started using it. The health benefits are impressive—vitamin C is essential for immune support, and the added bioflavonoids enhance absorption and effectiveness, making this product even more beneficial. The packaging is practical and well-designed. The 16 oz (454 g) container is sturdy, and the resealable lid keeps the powder fresh. The included scoop makes it easy to measure out the perfect dose. I use this powder daily, either mixed into my morning water or added to smoothies, and it has become an effortless way to support my health. I

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