Ultra Potent-C® 1000 Vitamin C
High-potency buffered vitamin C for daily immune and antioxidant support. Stomach-friendly formulation.*
New to Metagenics? Get 15% off your first order + free shipping! Auto-applied at checkout.
Select Container Size
Why You'll Love Ultra Potent-C® 1000 Vitamin C
Your immune system works hard every day, especially during seasonal changes and periods of stress. Ultra Potent-C® 1000 is a vitamin C supplement that provides 1000mg of vitamin C per tablet—about the same amount you'd get from eating four oranges—in a buffered formula that's easy on your stomach while delivering potent, absorbable vitamin C.*
- Preliminary research suggests it may be better absorbed than ascorbic acid alone*
- Provides antioxidant support to help protect your cells*
- Helps the body absorb iron*
The Science Inside
How It Works: Most vitamin C supplements use a single form of ascorbic acid. Ultra Potent-C® 1000 combines ascorbic acid with mineral-based forms of vitamin C (like calcium ascorbate and sodium ascorbate) to reduce acidity, which is why it’s easier to digest.* By using multiple forms of vitamin C, along with key nutrients, this formulation supports your body's ability to absorb and use these compounds.*
Key Ingredients:
- Vitamin C (1,000mg): Delivered as a buffered blend of multiple ascorbate forms for a more balanced approach to high-dose supplementation.
- Citrus Bioflavonoid Complex (32mg): Plant compounds naturally found in citrus fruits that work alongside vitamin C, both in nature and in this formula.
- L-Lysine (33mg) and L-Cysteine (8mg): Amino acids that complement vitamin C.
- L-Glutathione (5mg): One of the body's most important antioxidants, included to complement the overall formula.*
- Niacin (70mg): A B vitamin that supports energy metabolism.
Third-Party Tested. Practitioner Trusted.
For over 40 years, Metagenics® has led innovation in health supplements, exceeding industry standards for transparency and accountability. We guarantee that what’s on the label is what’s in the bottle, and that commitment is why we’re trusted by more than 50,000 healthcare providers worldwide. This, and all our formulas are also:
- Produced in GMP and NSF-certified facilities to meet the highest quality standards.
- Science-backed: We perform +200K quality tests annually, from ingredient sourcing to finished product, for accuracy and consistency.
- Third-party Tested: All our products are independently verified for purity, potency, & safety.
- Metagenics® is the #1 Doctor-Recommended Professional Supplement Brand★ trusted by 50,000 healthcare practitioners.
- Environmentally Responsible: As a registered B-Corp, sustainability matters; all our products are made ethically, responsibly, and with purpose.
- Risk Free: Every purchase is backed by our 60-Day Money Back Guarantee.
Allergen Information
Non-GMO | Gluten-free | Vegetarian
| Ingredient | Amount | % Daily Value |
|---|---|---|
| Serving Size | 1 Tablet | |
| Servings Per Container | 90 | |
| Vitamin C | 1,000 mg | 1,111% |
| Niacin | 70 mg | 438% |
| Calcium | 40 mg | 3% |
| Sodium | 10 mg | <1% |
| L-Lysine | 33 mg | ** |
| Citrus Bioflavonoid Complex [standardized to 45% (14.4 mg) full spectrum bioflavonoids] | 32 mg | ** |
| Tetrasodium Pyrophosphate | 14 mg | ** |
| Alpha D-Ribofuranose | 13 mg | ** |
| Xylitol | 9 mg | ** |
| L-Cysteine | 8 mg | ** |
| L-Glutathione | 5 mg | ** |
**Daily Value not established.
Other Ingredients: Ultra Potent-C (calcium ascorbate, niacinamide ascorbate, ascorbic acid, sodium
ascorbate, magnesium ascorbate, L-lysine HCl, ascorbyl palmitate, citrus bioflavonoid complex,
potassium ascorbate, tetrasodium pyrophosphate, alpha D-ribofuranose, L-cysteine HCl, xylitol,
and L-glutathione), microcrystalline cellulose, hydroxypropylcellulose, croscarmellose sodium,
coating (hypromellose, medium-chain triglycerides, and hydroxypropylcellulose), silica, niacinamide, and magnesium stearate (vegetable).
SKU: U1000
Take one tablet up to two times daily, or as directed by your healthcare practitioner.
Dry Place
Ultra Potent-C® 1000 Vitamin C
Keep out of the reach of children.
Frequently bought together
Zinc A.G.™
Supports immune health.*
4.7Vitamin D3 10,000 + K
Supports strong bones, heart health, and immune system
4.8Magnesium Glycinate
Highly absorbable magnesium supplement for muscle, nerve, sleep, & stress support.
4.7
New to Metagenics? Get 15% off your first order + free shipping! Auto-applied at checkout.
Select Container Size
Why You'll Love Ultra Potent-C® 1000 Vitamin C
Your immune system works hard every day, especially during seasonal changes and periods of stress. Ultra Potent-C® 1000 is a vitamin C supplement that provides 1000mg of vitamin C per tablet—about the same amount you'd get from eating four oranges—in a buffered formula that's easy on your stomach while delivering potent, absorbable vitamin C.*
- Preliminary research suggests it may be better absorbed than ascorbic acid alone*
- Provides antioxidant support to help protect your cells*
- Helps the body absorb iron*
The Science Inside
How It Works: Most vitamin C supplements use a single form of ascorbic acid. Ultra Potent-C® 1000 combines ascorbic acid with mineral-based forms of vitamin C (like calcium ascorbate and sodium ascorbate) to reduce acidity, which is why it’s easier to digest.* By using multiple forms of vitamin C, along with key nutrients, this formulation supports your body's ability to absorb and use these compounds.*
Key Ingredients:
- Vitamin C (1,000mg): Delivered as a buffered blend of multiple ascorbate forms for a more balanced approach to high-dose supplementation.
- Citrus Bioflavonoid Complex (32mg): Plant compounds naturally found in citrus fruits that work alongside vitamin C, both in nature and in this formula.
- L-Lysine (33mg) and L-Cysteine (8mg): Amino acids that complement vitamin C.
- L-Glutathione (5mg): One of the body's most important antioxidants, included to complement the overall formula.*
- Niacin (70mg): A B vitamin that supports energy metabolism.
Third-Party Tested. Practitioner Trusted.
For over 40 years, Metagenics® has led innovation in health supplements, exceeding industry standards for transparency and accountability. We guarantee that what’s on the label is what’s in the bottle, and that commitment is why we’re trusted by more than 50,000 healthcare providers worldwide. This, and all our formulas are also:
- Produced in GMP and NSF-certified facilities to meet the highest quality standards.
- Science-backed: We perform +200K quality tests annually, from ingredient sourcing to finished product, for accuracy and consistency.
- Third-party Tested: All our products are independently verified for purity, potency, & safety.
- Metagenics® is the #1 Doctor-Recommended Professional Supplement Brand★ trusted by 50,000 healthcare practitioners.
- Environmentally Responsible: As a registered B-Corp, sustainability matters; all our products are made ethically, responsibly, and with purpose.
- Risk Free: Every purchase is backed by our 60-Day Money Back Guarantee.
Allergen Information
Non-GMO | Gluten-free | Vegetarian
| Ingredient | Amount | % Daily Value |
|---|---|---|
| Serving Size | 1 Tablet | |
| Servings Per Container | 90 | |
| Vitamin C | 1,000 mg | 1,111% |
| Niacin | 70 mg | 438% |
| Calcium | 40 mg | 3% |
| Sodium | 10 mg | <1% |
| L-Lysine | 33 mg | ** |
| Citrus Bioflavonoid Complex [standardized to 45% (14.4 mg) full spectrum bioflavonoids] | 32 mg | ** |
| Tetrasodium Pyrophosphate | 14 mg | ** |
| Alpha D-Ribofuranose | 13 mg | ** |
| Xylitol | 9 mg | ** |
| L-Cysteine | 8 mg | ** |
| L-Glutathione | 5 mg | ** |
**Daily Value not established.
Other Ingredients: Ultra Potent-C (calcium ascorbate, niacinamide ascorbate, ascorbic acid, sodium
ascorbate, magnesium ascorbate, L-lysine HCl, ascorbyl palmitate, citrus bioflavonoid complex,
potassium ascorbate, tetrasodium pyrophosphate, alpha D-ribofuranose, L-cysteine HCl, xylitol,
and L-glutathione), microcrystalline cellulose, hydroxypropylcellulose, croscarmellose sodium,
coating (hypromellose, medium-chain triglycerides, and hydroxypropylcellulose), silica, niacinamide, and magnesium stearate (vegetable).
SKU: U1000
Take one tablet up to two times daily, or as directed by your healthcare practitioner.
Dry Place
Ultra Potent-C® 1000 Vitamin C
Keep out of the reach of children.
Frequently bought together
Zinc A.G.™
Supports immune health.*
4.7Vitamin D3 10,000 + K
Supports strong bones, heart health, and immune system
4.8Magnesium Glycinate
Highly absorbable magnesium supplement for muscle, nerve, sleep, & stress support.
4.7
