Pure Vitamin C, 100 Capsules
100 Capsules
May be a fit for
- Adults seeking pure ascorbic acid without excipients or fillers
- Practitioners protocols requiring isolated vitamin C without citrus bioflavonoids
- Individuals supporting collagen synthesis with straightforward ascorbic acid supplementation
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Pure Vitamin C from Allergy Research Group delivers ascorbic acid in a straightforward capsule form, supporting antioxidant defense, immune function, and connective tissue integrity. This practitioner-grade formulation is designed for those seeking a clean, additive-free source of vitamin C without unnecessary excipients or fillers.
Why It's Worth Considering: Allergy Research Group has a long-standing reputation in the clinical nutrition space for rigorous sourcing standards, and this product reflects that with a no-frills ascorbic acid that suits sensitive individuals or those following precise supplementation protocols.
Allergy Research Group · 100 CapsulesMake it part of your routine.
As a dietary supplement, 1 or 2 capsules with each meal, or as directed by a healthcare practitioner.
Important cautions & interactions
Product details
Supplement facts & complete label
Serving Size:
2 Capsules
Amount Per Serving:
Vitamin C (as Ascorbic Acid) ... 2 g
Other Ingredients:
Hydroxypropyl methylcellulose, microcrystalline cellulose, magnesium stearate.
These nutrients are of the highest quality and purity obtainable, and do not contain preservatives, diluents, or artificial additives.
Label directions
As a dietary supplement, 1 or 2 capsules with each meal, or as directed by a healthcare practitioner.
Label cautions
Keep in a cool, dry place, tightly capped.
Source: authorized supplier original manufacturer label · September 06, 2026. Formulas and labels can change. Check the packaging you receive.
Who it may suit
May be a fit for
- Adults seeking pure ascorbic acid without excipients or fillers
- Practitioners protocols requiring isolated vitamin C without citrus bioflavonoids
- Individuals supporting collagen synthesis with straightforward ascorbic acid supplementation
- Those with sensitivities needing a clean, additive-free vitamin C source
Considerations
- History of kidney stones (oxalate type) — use buffered form
- Hemochromatosis (iron overload — C enhances iron absorption)
- G6PD deficiency at very high IV doses
- Taking blood thinners at doses above 2g/day
Compatibility & interactions
Works Well With
Take Separately From
No significant interactions identified. Always consult your healthcare provider.
What to expect over time
Plasma Saturation
Blood levels reach therapeutic range
Immune Boost
Enhanced white blood cell function
Collagen Support
Improved skin elasticity and wound healing
Antioxidant Reserve
Reduced oxidative stress markers
Based on clinical research on vitamin C supplementation. Water-soluble — excess is excreted within hours.
Compare the options
Compare Vitamin C Forms
Which form delivers the most?
| Feature | Ascorbic Acid | Buffered (Ascorbate) | Liposomal | Ester-C |
|---|---|---|---|---|
| Bioavailability | Good (standard) | Good (gentler) | Excellent (2-3x) | Good |
| GI Tolerance | May cause acidity | Very gentle | Excellent | Gentle |
| Best For | Budget, general use | Sensitive stomachs | Maximum absorption | Sustained release |
| Price | $ | $ | $$$ | $$ |
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Pure Encapsulations - Alpha Lipoic Acid 600mg, 60 CapsulesALA recycles vitamin C back to its active form, extending antioxidant capacity.$67.99Real reviews. A wider perspective.
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These are broader practitioner and research perspectives. They may discuss the brand or other products, rather than this exact formula.
A few useful answers.
Research & further reading
More category questions
How much vitamin C should I take daily?
For maintenance, 500-1000mg daily is sufficient. For immune support during illness, 2000-4000mg in divided doses. The body can only absorb ~200-500mg at once, so split large doses throughout the day. Liposomal forms bypass this limit with 2-3x better absorption.
Is liposomal vitamin C worth the extra cost?
For most people, standard ascorbic acid at 500-1000mg is sufficient. Liposomal vitamin C is worth the premium if you need higher therapeutic doses (2000mg+) without GI distress, or if you have absorption issues. Studies show liposomal C achieves 2-3x higher blood levels than standard forms.
Can I take too much vitamin C?
Vitamin C is water-soluble and excess is excreted in urine. The main risk of high doses (3000mg+) is GI distress (diarrhea, cramping) and increased oxalate production, which may contribute to kidney stones in susceptible individuals. The 'bowel tolerance' test — increasing dose until loose stools, then backing off — is a common practitioner approach.
Does vitamin C really help prevent colds?
Meta-analyses show regular vitamin C supplementation reduces cold duration by 8% in adults and 14% in children, and reduces severity. It does NOT prevent colds in most people, but it does in those under physical stress (athletes, military). Taking vitamin C after cold symptoms start has minimal benefit — daily prevention is key.
When is the best time to take vitamin C?
Take with food to reduce potential stomach acidity. Morning dosing is common since vitamin C may mildly increase alertness. If taking large doses (1000mg+), split into 2-3 doses throughout the day for better absorption and sustained blood levels.
Supplement information is provided for education and is not a substitute for personalized medical advice. Supplements are not intended to diagnose, treat, cure or prevent disease. Read the current product label before use.