Life Extension BioActive Complete B-Complex
vs
Klean Athlete Klean Essential Aminos +HMB
Supplement Comparison

  • Calcium: Klean Athlete Klean Essential Aminos +HMB has 4.2× more
  • The image below shows:
    • Side-by-side charts with label nutrient amounts, per serving
    • Nutrient forms as listed on the label
    • 26 nutrients compared
Bar chart: per-serving label amounts and listed forms for Life Extension BioActive Complete B-Complex vs Klean Athlete Klean Essential Aminos +HMB.

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Frequently asked questions

Which active ingredients does Life Extension BioActive Complete B-Complex have?

  • Vitamin B1 (Thiamin) appears as Thiamin HCl
  • Vitamin B2 (Riboflavin) appears as Riboflavin and Riboflavin 5-Phosphate
  • Vitamin B3 (Niacin) appears as Niacinamide
  • Vitamin B6 (Pyridoxine) appears as Pyridoxine HCl and Pyridoxal 5-Phosphate
  • Vitamin B9 (Folate) appears as L-5-Methyltetrahydrofolate
  • Vitamin B12 (Cobalamin) appears as Methylcobalamin
  • Vitamin B7 (Biotin)
  • Vitamin B5 (Pantothenic Acid) appears as Calcium Pantothenate
  • PABA
  • Calcium appears as D-Calcium Pantothenate and Dicalcium Phosphate
  • Inositol

Which active ingredients does Klean Athlete Klean Essential Aminos +HMB have?

  • Vitamin D appears as Cholecalciferol (D3)
  • Calcium appears as Calcium from myHMB® Calcium (HMB-Ca Monohydrate)
  • L-Glutamine
  • β-Hydroxy-β-Methylbutyrate (HMB) appears as myHMB® Calcium (HMB-Ca Monohydrate)
  • Blend appears as Amino9 Amino Blend (L-Leucine, L-Lysine, L-Threonine, L-Isoleucine, L-Valine, L-Phenylalanine, L-Methionine, L-Histidine, L-Tryptophan)

Which categories do Life Extension BioActive Complete B-Complex and Klean Athlete Klean Essential Aminos +HMB belong to?

  • B-Complex Formula
  • Protein and Branched-chain Amino Acids
  • Sports Formula

What health concerns do Life Extension BioActive Complete B-Complex and Klean Athlete Klean Essential Aminos +HMB address?

  • Brain, Focus & Cognitive Function
  • Energy & Metabolism
  • Athletic Performance
  • Muscle Support
  • Recovery & Repair

Which product has a higher amount of Calcium per serving?

  • Klean Athlete Klean Essential Aminos +HMB has the highest total amount of Calcium: 210 mg per serving

How do the serving sizes compare between the two supplements?

  • Serving size:
    • Life Extension BioActive Complete B-Complex: 2 capsules
    • Klean Athlete Klean Essential Aminos +HMB: 1 scoop
  • Vitamin B1 (Thiamin)
    • This supplement has 100 mg
    • Recommended Dietary Allowance in men: 1.2 mg
    • Recommended Dietary Allowance in women: 1.1 mg
    • Tolerable Upper Intake Level: Not established
  • Vitamin B2 (Riboflavin)
    • This supplement has 75 mg
    • Recommended Dietary Allowance in men: 1.3 mg
    • Recommended Dietary Allowance in women: 1.1 mg
    • Tolerable Upper Intake Level: Not established
  • Vitamin B3 (Niacin)
    • This supplement has 100 mg
    • Recommended Dietary Allowance in men: 16 mg
    • Recommended Dietary Allowance in women: 14 mg
    • Tolerable Upper Intake Level: 35 mg
  • Vitamin B6 (Pyridoxine)
    • This supplement has 100 mg
    • Recommended Dietary Allowance in men: 1.3 mg
    • Recommended Dietary Allowance in women: 1.3 mg
    • Tolerable Upper Intake Level: 100 mg
  • Vitamin B9 (Folate)
    • This supplement has 680 mcg DFE
    • Recommended Dietary Allowance in men: 400 mcg DFE
    • Recommended Dietary Allowance in women: 400 mcg DFE
    • Tolerable Upper Intake Level: 1000 mcg DFE
  • Vitamin B12 (Cobalamin)
    • This supplement has 300 mcg
    • Recommended Dietary Allowance in men: 2.4 mcg
    • Recommended Dietary Allowance in women: 2.4 mcg
    • Tolerable Upper Intake Level: Not established
  • Vitamin D
    • This supplement has 500 IU
    • Recommended Dietary Allowance in men: 600 IU
    • Recommended Dietary Allowance in women: 600 IU
    • Tolerable Upper Intake Level: 4000 IU
  • Calcium
    • This supplement has 210 mg
    • Recommended Dietary Allowance in men: 1000 mg
    • Recommended Dietary Allowance in women: 1000 mg
    • Tolerable Upper Intake Level: 2500 mg

Last updated: February 4, 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.
  • Questions? Read our Frequently Asked Questions or contact us, we’re here to help.
  • See an error? Report it through our Contact page.
  • Author: VIOscan Research Team