Calculate HMB (β-hydroxy β-methylbutyrate) dose. Leucine metabolite (about 5% of leucine converts to HMB). Anti-catabolic — most useful in elderly sarcopenia, bed rest/immobilization, caloric deficit, untrained beginners. Diminishing returns in trained athletes. Math, not medical advice. Evidence asymmetry: HMB shows good results in elderly (sarcopenia prevention), bed-rest patients (muscle preservation), and untrained beginners. In trained […]

Calculate L-glutamine doses by goal. The most abundant amino acid in the body, with very different evidence levels: strong in critical illness/burns/surgery, moderate in IBD/short bowel, thin in healthy athlete recovery. Math, not medical advice. Honest framing: glutamine is a multi-billion-dollar athletic recovery product, but meta-analyses in healthy trained athletes show minimal benefit beyond placebo

Calculate your daily fiber target by age/sex (IOM AI) with goal-adjusted recommendations for cholesterol, blood sugar, constipation, weight, and GLP-1 side effects. Most Americans get under 15 g/day — RDA gap is 10+ g for most adults. Math, not medical advice. The 80/20 truth on fiber: the average US adult gets ~15 g/day; the IOM

Estimate sodium, potassium, and magnesium losses from sweat during exercise or heat exposure, then see how well your LMNT / Liquid IV / DIY salt-water DOES (or doesn’t) replace them. Population-average math; individual sweat rates vary 3-fold. The 80/20 truth: sweat sodium concentration averages ~1,000 mg/L but ranges from ~300 mg/L (low-salt sweaters) to ~2,000

Calculate cordyceps dose by goal — endurance, energy, immune support. Most commercial cordyceps is C. militaris (cultivated) NOT C. sinensis (wild Tibetan, $1,000+/kg). Cordycepin % is the standardization marker most labels skip. Math, not medical advice. The sinensis vs militaris truth: wild Cordyceps sinensis (caterpillar fungus from Tibetan plateau) costs $20,000-50,000/kg and is endangered. Virtually

Compare collagen powders by actual protein per dollar and per-scoop bioactive dose. RCTs use 10-15g hydrolyzed collagen daily for skin/joint outcomes — many products under-dose. Calculator decodes Vital Proteins, Sports Research, Ancient Nutrition, NOW Foods. Math, not medical advice. The “1 scoop” trap: scoop sizes vary 10g to 25g across brands. Comparing “$30 for 30

Calculate a cognitive stack — choline + phosphatidylserine + omega-3 DHA + B-vitamins — by age and goal. Aimed at adults wanting to preserve cognitive function. Modest effects with consistent use; NOT a substitute for clinical care of cognitive impairment. Math, not medical advice. Honest framing: these components have varying levels of evidence. None individually

Calculate L-citrulline or citrulline malate dose. Citrulline → arginine → nitric oxide → vasodilation. Better than arginine supplementation (bypasses gut first-pass). Pre-workout pump, endurance, mild BP reduction. Math, not medical advice. Critical dosing distinction: L-citrulline and citrulline malate are NOT interchangeable. Citrulline malate is typically 2:1 ratio (2 parts citrulline + 1 part malic acid).

Calculate the bone stack — calcium + vitamin D + K2 + magnesium + protein — by age, sex, and risk factors. The 1,200 mg calcium-only era is over; modern bone health is a 4-5 cofactor question. Calculator helps avoid calcium-only over-supplementation (arterial calcification risk). Math, not medical advice. Calcium without K2 may be risky:

Calculate beta-alanine dose. Beta-alanine + histidine → muscle carnosine → intramuscular pH buffer. Best evidence for 1-4 minute high-intensity exercise (CrossFit-WOD, rowing, mid-distance cycling/running, MMA rounds). Loading + paresthesia management critical. Math, not medical advice. Paresthesia (tingling) is harmless but uncomfortable: single doses over 800-1000 mg trigger histamine-mediated skin tingling (face, hands, scalp). Splitting into