Life Extension Super Selenium Complex
vs
Douglas Laboratories Co-Enzyme Q10
Supplement Comparison

  • Vitamin E: Douglas Laboratories Co-Enzyme Q10 has 3.3× more
  • The image below shows:
    • Side-by-side charts with label nutrient amounts, per serving
    • Nutrient forms as listed on the label
    • 8 nutrients compared
Bar chart: per-serving label amounts and listed forms for Life Extension Super Selenium Complex vs Douglas Laboratories Co-Enzyme Q10.

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Frequently asked questions

Which active ingredients does Life Extension Super Selenium Complex have?

  • Vitamin E appears as d-Alpha Tocopheryl Acid Succinate
  • Selenium appears as Se-Methyl L-Selenocysteine L-selenomethionine Sodium Selenite

Which active ingredients does Douglas Laboratories Co-Enzyme Q10 have?

  • Vitamin A appears as Beta-carotene from algae (Dunaliella salina)
  • Vitamin E appears as d-Alpha Tocopherol from Mixed Tocopherols
  • Coenzyme Q10 appears as Ubiquinone (Oxidized CoQ10)

Which categories do Life Extension Super Selenium Complex and Douglas Laboratories Co-Enzyme Q10 belong to?

  • Single Mineral
  • Antioxidant Complex

What health concerns do Life Extension Super Selenium Complex and Douglas Laboratories Co-Enzyme Q10 address?

  • Antioxidant Support
  • Thyroid Support
  • Healthy Aging & Longevity
  • Immune System Support
  • Cellular Health
  • Energy & Metabolism
  • Heart & Cardiovascular Health

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

  • Douglas Laboratories Co-Enzyme Q10 has the highest total amount of Vitamin E: 67 mg per serving

How do the serving sizes compare between the two supplements?

  • Serving size:
    • Life Extension Super Selenium Complex: 1 capsule
    • Douglas Laboratories Co-Enzyme Q10: 1 softgel
  • Vitamin E
    • This supplement has 20.1 mg
    • Recommended Dietary Allowance in men: 15 mg
    • Recommended Dietary Allowance in women: 15 mg
    • Tolerable Upper Intake Level: 1000 mg
  • Selenium
    • This supplement has 200 mcg
    • Recommended Dietary Allowance in men: 55 mcg
    • Recommended Dietary Allowance in women: 55 mcg
    • Tolerable Upper Intake Level: 400 mcg
  • Vitamin A
    • This supplement has 700 mcg RAE
    • Recommended Dietary Allowance in men: 900 mcg RAE
    • Recommended Dietary Allowance in women: 700 mcg RAE
    • Tolerable Upper Intake Level: 3000 mcg RAE
  • 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

Last updated: January 31, 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).
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  • 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