NaturesPlus Ultra-C, Sustained Release, 90 Tablets supplement bottle
NaturesPlus

Ultra-C, Sustained Release, 90 Tablets

What We Researched
2 active ingredients analyzed · 6 inactive ingredients decoded · 2 retailers compared · Last updated: Mar 2026
75
Product Score Fair
59
Brand Score Poor

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin C (as ascorbic acid) 2000 mg 2222%
Rose Hips (Rosa canina fruit) 200 mg
Bioavailability Fair

Absorption Rating

  • Vitamin C (as ascorbic acid) Fair
  • Rose Hips (Rosa canina fruit) Fair
Other Ingredients Excellent

Fillers & Additives

  • Stearic Acid
  • Microcrystalline Cellulose
  • Silica
  • Magnesium Stearate
  • Carob
  • Hydroxypropyl methylcellulose and pharmaceutical glaze
Efficacy Fair

Dosage Analysis

  • Vitamin C (as ascorbic acid) 2000 mg Effective
  • Rose Hips (Rosa canina fruit) 200 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Vitamin C (as ascorbic acid) 2000 mg 2222%
Rose Hips (Rosa canina fruit) 200 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Carob Safe

It is used as a natural colorant or flavoring agent.

Hydroxypropyl methylcellulose and pharmaceutical glaze Unknown

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$30$29$28$27$26 Mar 12 $28.00
iHerb

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
NaturesPlus

Founded 1972 · Melville, New York, United States · 420 products · naturesplus.com

Transparency

3 claims
Third Party Testing Claim — Claimed
In House Testing — Claimed

Violation History

1 incident
Recall Keto Living Sugar Control Capsules2022-05-06Source
Related Supplements
Frequently Asked Questions
Is NaturesPlus Ultra-C, Sustained Release a good supplement?

NaturesPlus Ultra-C, Sustained Release, 90 Tablets received a product quality score of 75/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 2 active ingredients Of the 6 inactive ingredients, 5 are rated safe and 0 are flagged for review. The manufacturer, NaturesPlus, holds a brand trust score of 59/100.

What are the ingredients in NaturesPlus Ultra-C, Sustained Release?

NaturesPlus Ultra-C, Sustained Release contains 2 active ingredients: Vitamin C (as ascorbic acid) (2000 mg), Rose Hips (Rosa canina fruit) (200 mg). Notable high-dose ingredients include Vitamin C at 2222% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is NaturesPlus Ultra-C, Sustained Release safe to take?

NaturesPlus Ultra-C, Sustained Release, 90 Tablets has been analyzed for ingredient safety across all its components. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is NaturesPlus a trustworthy supplement brand?

NaturesPlus receives a brand trust score of 59/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1972 and headquartered in Melville, New York, United States, the company offers 420 products in their lineup. Note: NaturesPlus has 1 historical regulatory incident on record, which are factored into the trust score.

Scan Any Supplement Instantly

Download GoodSupp to scan barcodes, check ingredient safety, and find the best supplements for your needs.

Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.