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Zena Nutrition Liquid Collagen + Biotin
Photo: Open Food Facts contributors (CC BY-SA)

Dietary supplements

Zena Nutrition Liquid Collagen + Biotin

Excellent out of 100 High confidence
  • Contains non-nutritive sweeteners
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Why it scores 92

Zena Nutrition Liquid Collagen + Biotin scores 92 out of 100 (Excellent) under GoodSwap’s published rules. What moved the score most:

  1. Sodium benzoate: Benzoates can form small amounts of benzene in drinks that also contain ascorbic acid (vitamin C), especially with heat or light. Strong
  2. Natural flavors: "Natural flavor" is a legal category (21 CFR 101.22(a)(3)): flavor substances from spices, fruits, vegetables, meat, dairy or fermentation. Info
  3. Monk fruit extract: WHO (2023) recommends against using non-sugar sweeteners to control body weight (conditional recommendation); US dietary guidelines advise limiting them. Emerging

Every line of the math is on The Receipt below, with its evidence tier and sources.

The Receipt

Liquid Collagen + Biotin

START100

Ingredients

  • Sodium benzoate
    Strong Benzoates can form small amounts of benzene in drinks that also contain ascorbic acid (vitamin C), especially with heat or light. [1][2][3]
  • Natural flavors
    Info "Natural flavor" is a legal category (21 CFR 101.22(a)(3)): flavor substances from spices, fruits, vegetables, meat, dairy or fermentation. [4][5]
  • Monk fruit extract
    Emerging WHO (2023) recommends against using non-sugar sweeteners to control body weight (conditional recommendation); US dietary guidelines advise limiting them. [6][7]
  • Potassium sorbate
    Strong EFSA (2019) set a group ADI of 11 mg/kg body weight (as sorbic acid); generally recognized as safe in the US. [8][9]
  • Stevia (steviol glycosides)
    Emerging WHO (2023) recommends against using non-sugar sweeteners to control body weight (conditional recommendation); US dietary guidelines advise limiting them. [6][7]
subtotal−8
TOTAL 92Excellent

100 − 8 = 92

GTIN 00860002992501 · 2026-05-17

score v1.3.0 · kb 2026.10.11

High confidence

Same product, same score. Every time.

Nutrition per 100 g

Energy100 kcal
Fat0 g
Carbohydrates0 g
Sugars0 g
Added sugars0 g
Protein20 g
Salt0.4 g

Serving: 10 m (10 ml)

Ingredients

High Moderate Not recognized Tap an ingredient for its evidence and rules.
Label text, as published

Purified water, natural flavor, malic acid, citric acid, monk fruit extract (lou han guo), sodium benzoate, potassium sorbate, stevia leaf extract

Allergens and diets

  • Palm-oil-free

Always check the package: recipes change.

More from Zena Nutrition

Sources

  1. Benzene production from decarboxylation of benzoic acid in the presence of ascorbic acid and a transition-metal catalyst

    Journal of Agricultural and Food Chemistry · May 1993 · Peer-reviewed

    doi.org

  2. Food additives and hyperactive behaviour in 3-year-old and 8/9-year-old children in the community: a randomised, double-blinded, placebo-controlled trial

    The Lancet · November 2007 · Peer-reviewed

    “Artificial colours or a sodium benzoate preservative (or both) in the diet result in increased hyperactivity in 3-year-old and 8/9-year-old children in the general population.”

    doi.org

  3. Re-evaluation of benzyl alcohol (E 1519) as food additive (records the 2016 benzoate re-evaluation)

    European Food Safety Authority · Oct 30, 2019 · Agency assessment

    “derived a group ADI of 5 mg/kg bw per day (expressed as benzoic acid) in accordance with the ADI previously derived by SCF and JECFA”

    doi.org

  4. 21 CFR 101.22 Foods; labeling of spices, flavorings, colorings and chemical preservatives

    Electronic Code of Federal Regulations (eCFR), U.S. Office of the Federal Register · Dec 19, 2016 · Law

    “whose significant function in food is flavoring rather than nutritional.”

    ecfr.gov

  5. Ultra-processed foods: what they are and how to identify them

    Public Health Nutrition · April 2019 · Peer-reviewed

    doi.org

  6. WHO advises not to use non-sugar sweeteners for weight control in newly released guideline

    World Health Organization · May 15, 2023 · Agency assessment

    “The recommendation is based on the findings of a systematic review of the available evidence which suggests that use of NSS does not confer any long-term benefit in reducing body fat in adults or children.”

    who.int

  7. Dietary Guidelines for Americans, 2025–2030

    U.S. Department of Health and Human Services and U.S. Department of Agriculture · January 2026 · Regulator

    “Limit foods and beverages that include artificial flavors, petroleum-based dyes, artificial preservatives, and low-calorie non-nutritive sweeteners.”

    cdn.realfood.gov

  8. Opinion on the follow-up of the re-evaluation of sorbic acid (E200) and potassium sorbate (E202) as food additives

    European Food Safety Authority · Mar 1, 2019 · Agency assessment

    “By applying a default uncertainty factor of 100, the Panel established a group ADI expressed as 11 mg sorbic acid/kg bw per day for sorbic acid (E 200) and its potassium salt (E 202).”

    doi.org

  9. 21 CFR 182.3640 Potassium sorbate

    Electronic Code of Federal Regulations (eCFR), U.S. Office of the Federal Register · Nov 22, 2016 · Law

    ecfr.gov