Klean Athlete Klean Antioxidant
vs
Metagenics Fem EstroPlex
Supplement Comparison

  • Vitamin C: Metagenics Fem EstroPlex has 2.4× more
  • The image below shows:
    • Side-by-side charts with label nutrient amounts, per serving
    • Nutrient forms as listed on the label
    • 19 nutrients compared
Bar chart: per-serving label amounts and listed forms for Klean Athlete Klean Antioxidant vs Metagenics Fem EstroPlex.

Frequently asked questions

Which active ingredients does Klean Athlete Klean Antioxidant have?

  • Vitamin C appears as Ascorbic Acid
  • Vitamin B7 (Biotin) appears as D-Biotin
  • Alpha Lipoic Acid
  • Astaxanthin appears as AstaReal Astaxanthin (supercritical CO2 extract of Haematococcus pluvialis)
  • Acetyl-L-Carnitine appears as Acetyl-L-Carnitine Chloride
  • Maqui Berry appears as Delphinol

Which active ingredients does Metagenics Fem EstroPlex have?

  • Vitamin C appears as Ascorbic Acid
  • Vitamin E appears as d-Alpha Tocopheryl Succinate
  • Vitamin B6 (Pyridoxine) appears as Pyridoxine HCl
  • Vitamin B5 (Pantothenic Acid) appears as D-Calcium Pantothenate
  • Rutin
  • Blend appears as Proprietary Herbal Extract Blend (Dandelion Chasteberry Valerian Motherwort Stinging Nettle)

Which categories do Klean Athlete Klean Antioxidant and Metagenics Fem EstroPlex belong to?

  • Antioxidant Complex
  • Sports Formula
  • Hormone Support Formula

What health concerns do Klean Athlete Klean Antioxidant and Metagenics Fem EstroPlex address?

  • Antioxidant Support
  • Athletic Performance
  • Cellular Health
  • Recovery & Repair
  • Women's Health

Which product has a higher amount of Vitamin C per serving?

  • Metagenics Fem EstroPlex has the highest total amount of Vitamin C: 300 mg per serving

How do the serving sizes compare between the two supplements?

  • Serving size:
    • Klean Athlete Klean Antioxidant: 3 capsules
    • Metagenics Fem EstroPlex: 3 tablets
  • Vitamin C
    • This supplement has 125 mg
    • Recommended Dietary Allowance in men: 90 mg
    • Recommended Dietary Allowance in women: 75 mg
    • Tolerable Upper Intake Level: 2000 mg
  • Vitamin B7 (Biotin)
    • This supplement has 300 mcg
    • Adequate Intake in men: 30 mcg
    • Adequate Intake in women: 30 mcg
    • Tolerable Upper Intake Level: Not established
  • Vitamin C
    • This supplement has 300 mg
    • Recommended Dietary Allowance in men: 90 mg
    • Recommended Dietary Allowance in women: 75 mg
    • Tolerable Upper Intake Level: 2000 mg
  • Vitamin E
    • This supplement has 67 mg
    • Recommended Dietary Allowance in men: 15 mg
    • Recommended Dietary Allowance in women: 15 mg
    • Tolerable Upper Intake Level: 1000 mg
  • Vitamin B6 (Pyridoxine)
    • This supplement has 50 mg
    • Recommended Dietary Allowance in men: 1.3 mg
    • Recommended Dietary Allowance in women: 1.3 mg
    • Tolerable Upper Intake Level: 100 mg
  • Vitamin B5 (Pantothenic Acid)
    • This supplement has 300 mg
    • Adequate Intake in men: 5 mg
    • Adequate Intake in women: 5 mg
    • Tolerable Upper Intake Level: Not established

Last updated: January 3, 2026

  • Sources & Methodology: Nutrient data and forms are taken directly from Supplement Facts labels. Reviewed and standardized by the VIOscan Research Team. Learn more on the Methodology page.
  • We show the Recommended Dietary Allowance (RDA) when available. If no RDA exists, we show the Adequate Intake (AI). Tolerable Upper Intake Levels (UL) are used for upper limits. Unless otherwise noted, RDAs shown correspond to healthy adults aged 19–50 years and are sex-specific. Separate values exist for 51–70 years and >70 years, and pregnancy and lactation are excluded. All values come from the Dietary Reference Intakes (DRIs) published by the National Academies of Sciences, Engineering, and Medicine (NASEM), Food and Nutrition Board (FNB).
  • Transparency: We’re funded by our users. We don’t have sponsors or affiliate links, and we don’t sell supplements.
  • Editorial standards: we provide independent, impartial and objective data analysis.
  • This analysis is for educational purposes only. It is not a substitute for medical advice.
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  • Author: VIOscan Research Team