Supplements & Functional Foods
What's worth taking, from which brand, at what $/unit. Third-party-tested only.
Supplements as a mechanical category, not a wellness category. What's worth taking, at what dose, from what brands, at what $/mg of bioactive. This is the high-AOV affiliate hub.
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What we'd actually buy.
Best Creatine Monohydrate, Ranked by $/gram
Creapure-certified creatine ranked by $/gram, with third-party testing status and brand transparency.
Best Magnesium Forms: Glycinate vs Citrate vs Threonate vs Oxide
Which magnesium form for which use case, absorption data, dose ranges, and brand recommendations.
Best Electrolyte Powders, 2026: Ranked by $/mg of Sodium
Eight electrolyte powders ranked on cost-per-mg of sodium, the actual ingredient most consumers under-dose. LMNT, Liquid IV, Re-Lyte, and 5 alternatives, with the failure modes nobody publishes.
Best Multivitamin, 2026: Ranked by Nutrient Coverage Per Dollar
Eight multivitamins scored on the 13 RDA-relevant nutrients an actual diet typically under-delivers. Methylated B-vitamins, the iron-versus-no-iron split, and the cost-per-day math.
Best Fish Oil, Ranked by $/mg of EPA+DHA
Fish oil ranked by $/mg of combined EPA+DHA, the actual active dose, not per softgel. Triglyceride vs ethyl ester form and third-party testing flagged.
Best Vitamin D Supplement, Ranked by $/1000 IU
Vitamin D3 supplements ranked by $/1000 IU of cholecalciferol, with D3-vs-D2, K2/magnesium cofactor notes, and third-party testing status.
Best Collagen Powder, Ranked by $/g (and Whether It Works)
Hydrolyzed collagen ranked by $/g of peptides, led by the honest evidence: modest skin/joint signal, and a low-DIAAS protein that doesn't count toward your protein target.
Plain-English answers to the specific questions.
- 01Explainer9 min
Creatine Side Effects: What the Trials Actually Show
Water retention, kidney worry, hair loss, bloating: what the controlled trials on creatine monohydrate actually show, by dose and population.
- 02Explainer9 min
What Does Creatine Do? The Mechanism, Effects, and Dose
Creatine recycles ATP for short, hard efforts: ~1-2 kg muscle, ~5-15% more reps, and emerging cognitive effects. What it does, how fast, and at what dose.
Get the Larderlab Macro Planner.
A Google Sheet that calculates your protein target, splits it across 3-5 meals, and ranks 20 protein sources by $/gram. Free. Copy-and-modify your own version.
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