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Supplement analysis

Articles

Label teardowns, safety explainers, and score-driven supplement buying guides built to be scanned quickly and checked against source links.

For research and educational purposes only. Not medical advice.

Buyer hub

Best greens powders of 2026

A score-driven ranked guide connected to every product scorecard.

Scorecards

Reviews for ranked products

Browse product-level score snapshots for all 18 green powders.

Comparisons

AG1 vs alternatives

Head-to-head pages for product comparison questions.

Calculators

Supplement label tools

Price, scoop, transparency, and COA unit tools connected to the label-literacy articles.

Focused buyer guides

List pages built from the score snapshot

View the full buyer hub

Product comparisons

Head-to-head pages for buyer searches

View all comparisons

Label reading hub

Label hub

Label reading guides: claims, doses, badges, and fine print

A crawlable cluster for Supplement Facts panels, proprietary blends, FDA-approved wording, testing badges, serving math, and COA checks.

Last reviewed: 2026-06-28

Safety guide hub

Safety hub

Supplement safety guides: heavy metals, COAs, and testing

A safety cluster for heavy-metal questions, COA literacy, certification checks, allergen warnings, and cautious supplement labels.

Last reviewed: 2026-06-28

Mood label guide

Claim guide

Mood-support supplements: calm, sleep, and gut health

A label-first guide to mood-support supplement claims that bundle calm, sleep, hydration, magnesium, L-theanine, and probiotics.

Last reviewed: 2026-06-03

GLP-1 claim guide

Boundary guide

GLP-1 and satiety supplements: what the label can actually prove

A conservative guide to GLP-1-adjacent satiety supplement claims, fiber, berberine, digestive positioning, and medication-boundary caveats.

Last reviewed: 2026-06-03

Personalization guide

Privacy guide

Personalized vitamins and AI: useful quiz or privacy trap?

A privacy-first guide to AI vitamin quizzes, at-home genetic tests, app-based supplement plans, evidence limits, and what a personalized label should prove.

Last reviewed: 2026-06-03

Transparency guide

Label guide

Clean-label supplements: what transparency actually means

A skeptical guide to clean-label supplement claims, ingredient lists, natural language, third-party testing, USP/NSF signals, and label transparency.

Last reviewed: 2026-06-03

Mineral guide

Basics guide

Essential minerals and back-to-basics supplements

A label-first guide to magnesium, vitamin K, vitamin A, iron, folate, vitamin D, and foundational supplement claims.

Last reviewed: 2026-06-03

Longevity claim guide

Evidence guide

Cellular energy and NAD+ boosters: what the evidence can prove

A skeptical guide to NAD+ boosters, nicotinamide riboside, NMN, CoQ10, mitochondrial support claims, dose evidence, and safety limits.

Last reviewed: 2026-06-03

Format guide

Label math

Gummies vs soft chews vs functional drinks: the format tradeoff

A practical guide to gummies, soft chews, functional drinks, powders, payload limits, sugar, additives, serving size, and supplement label math.

Last reviewed: 2026-06-03

Energy label guide

Ingredient guide

Clean energy from matcha, ginseng, and beet root

A skeptical guide to plant-based energy supplements using matcha, green tea caffeine, Asian ginseng, beet root, and focus claims.

Last reviewed: 2026-06-03

Trend claim guide

Context guide

Asian-inspired wellness: matcha, fermentation, and yuzu

A careful guide to Asian-inspired supplement cues, matcha, green tea, fermented ingredients, yuzu positioning, probiotics, and cultural marketing.

Last reviewed: 2026-06-03

Safety guide

Risk guide

Shilajit supplements: benefits, risks, and quality checks

A conservative shilajit supplement guide focused on purification, heavy-metal concerns, standardization, testosterone and vitality claims, and label quality.

Last reviewed: 2026-06-03

Routine guide

Claim guide

Multi-benefit routine supplements: how to spot real value

A guide to multi-benefit supplement claims that combine mood, sleep, fiber, satiety, focus, hydration, or greens in one daily routine.

Last reviewed: 2026-06-03

Beauty label guide

Evidence guide

Beauty-from-within supplements: collagen and antioxidant claims

A source-grounded guide to beauty supplements, collagen peptides, antioxidant positioning, skin claims, and evidence limits.

Last reviewed: 2026-06-03

Gut label guide

Strain guide

Gut health and synbiotics: probiotics, prebiotics, and postbiotics

A label-first guide to probiotics, prebiotics, postbiotics, synbiotic powders, strain-specific evidence, CFUs, fiber, and gut-health claims.

Last reviewed: 2026-06-03

Sleep label guide

Caution guide

Sleep and relaxation supplements beyond melatonin

A conservative guide to magnesium, valerian, L-theanine, botanical blends, sleep claims, timing, dose, and safety caveats.

Last reviewed: 2026-06-03

Adaptogen guide

Claim guide

Adaptogens for stress management: evidence, labels, and limits

A careful guide to adaptogen supplements, ashwagandha, botanical stress claims, cortisol language, and evidence limits.

Last reviewed: 2026-06-03

Mushroom guide

Evidence guide

Functional mushrooms for brain and immune support

A skeptical guide to lion's mane, reishi, mushroom extracts, beta-glucans, cognition claims, and immune-support wording.

Last reviewed: 2026-06-03

Immune label guide

Claim guide

Holistic immune support: vitamins, minerals, and botanicals

A conservative guide to immune-support supplement formulas with vitamin C, vitamin D, zinc, echinacea, botanical positioning, and claim boundaries.

Last reviewed: 2026-06-03

Women's health guide

Caution guide

Women's health supplements: hormone and energy claims

A careful guide to women's health supplement claims for PMS, fertility, pregnancy, menopause, iron, calcium, inositol, chasteberry, and adaptogens.

Last reviewed: 2026-06-03

Creatine guide

Evidence guide

Creatine for daily performance and cognition

A practical guide to creatine beyond sports, daily performance, cognition research, muscle support claims, monohydrate, HCl, and dose transparency.

Last reviewed: 2026-06-03

Protein GLP-1 guide

Boundary guide

Protein and GLP-1: shakes for satiety and muscle maintenance

A careful guide to protein shakes marketed to GLP-1 users, satiety, muscle-maintenance claims, complete proteins, fiber, micronutrients, and medication boundaries.

Last reviewed: 2026-06-03

Claim language guide

Boundary guide

Supplement claim words vs evidence: what the label should prove

A practical way to separate broad wellness language from claims that are backed by named ingredients, doses, and clear evidence references.

Last reviewed: 2026-06-03

Gut label guide

Strain guide

Probiotic and prebiotic label decoding: strain names, CFU, and dose

A practical guide to probiotic labels that separate strain-specific science from generic gut-health wording and packaging hype.

Last reviewed: 2026-06-03

Dose math guide

Dose guide

Supplement serving-size traps: scoops, gummies, and label math

A practical checklist for avoiding dose inflation, undercounting, and serving confusion in powders, beverages, and chewable formats.

Last reviewed: 2026-06-03

Stimulant label guide

Safety guide

Caffeine and stimulants on supplement labels: read the whole list

A label-first guide to caffeine counts, stimulant blends, and cumulative intake when products stack across a day.

Last reviewed: 2026-06-03

Certification guide

Quality guide

Certification badge checklist: what quality logos can and cannot prove

A practical guide to NSF, USP, COA, and third-party testing language so badges do not replace label transparency.

Last reviewed: 2026-06-03

Safety label guide

Safety guide

Allergen and cross-contamination warnings: how to read the small print

A safety-first look at allergen statements, precautionary labels, and what warning text can and cannot replace clinician guidance.

Last reviewed: 2026-06-03

Mineral form guide

Form guide

Vitamin and mineral forms: why label names matter

A practical way to read magnesium, iron, vitamin D, vitamin A, and vitamin K forms without assuming one mineral label is equivalent to another.

Last reviewed: 2026-06-03

Quality verification guide

Quality guide

Batch testing and lot numbers explained: what a COA can still miss

A practical guide to lot numbers, COA language, and why batch-level claims need specifics to stay meaningful.

Last reviewed: 2026-06-03

Nutrition label guide

Label math

Fiber, carbs, and sugar label reading for supplements and drinks

A plain-English guide to fiber grams, sugar disclosures, and carbohydrate math for powders, powders blends, and ready-to-drink formulas.

Last reviewed: 2026-06-03

Additive clarity guide

Additive guide

Sweetener and flavoring terms on supplement labels: decode the list

A checklist for reading sweetener names, flavor systems, and additive terms without giving them more meaning than the label provides.

Last reviewed: 2026-06-03

Greens powder guide

Label guide

Do greens powders replace vegetables? The label answer

A practical answer to whether greens powders count as vegetables, with fiber, serving size, Supplement Facts, and testing checks.

Last reviewed: 2026-06-22

Protein guide hub

Protein hub

Protein guides: grams, absorption, powders, and label math

A crawlable protein cluster covering daily grams, timing, collagen, absorption, powder usefulness, storage, whey, plant protein, and scoop math.

Last reviewed: 2026-07-01

Protein timing guide

Timing guide

Protein timing: does the anabolic window matter?

A plain-English read on post-workout protein timing, the anabolic window, daily protein, and when a shake actually solves a meal gap.

Last reviewed: 2026-07-01

Protein quality guide

Quality guide

Does collagen count as protein? The amino acid catch

A practical guide to collagen protein grams, tryptophan, complete protein, and how to count collagen without over-crediting the label.

Last reviewed: 2026-07-01

Protein storage guide

Storage guide

Does protein powder expire? The tub date is only part of the answer

A practical guide to best-by dates, shelf-life claims, clumps, moisture, smell checks, and when an old protein tub is not worth the gamble.

Last reviewed: 2026-06-28

Protein digestion guide

Absorption guide

How protein is absorbed in the body: the plain-English version

A practical guide to protein digestion, amino-acid absorption, protein quality, fast-absorbing claims, and what powder labels should prove.

Last reviewed: 2026-06-27

Protein intake guide

Gram guide

How much protein do you need per day? The no-hype gram guide

A simple answer to daily protein grams, active-person ranges, meal timing, protein maxxing, and when powder is just convenience.

Last reviewed: 2026-06-14

Protein safety guide

Safety guide

Is protein powder good for you? The useful answer before you buy

A buyer-first read on protein powder usefulness, heavy-metal concerns, testing signals, allergens, serving math, and label checks.

Last reviewed: 2026-06-14

Label scam guide

Scam guide

Supplement label scams: FDA-approved claims and fake badges

A practical scam-detection guide for FDA-approved supplement claims, fake or weak testing badges, proprietary blends, and clinically studied dose language.

Last reviewed: 2026-06-04

Protein safety guide

Safety guide

Protein powder contamination and regulation: what buyers should check

A practical guide to protein powder heavy metals, COA literacy, pregnancy and kids caution, and the SB 1033 regulation story.

Last reviewed: 2026-06-04

Brand teardown

98/100

Total Living Drink Greens teardown: a powder with receipts

A score-driven read of Kylea's top-ranked greens powder, public COA, 11 g vegan protein, heavy-metal testing, and $99 price.

Last reviewed: 2026-06-04

Brand teardown

76/100

Green Vibrance teardown: the boring label is the best part

A label-first teardown of Green Vibrance's transparent Supplement Facts panel, 25B CFU claim, $56 price, and Prop 65 warning.

Last reviewed: 2026-06-04

Brand teardown

75/100

Opti Greens 50 teardown: good value, weaker dose transparency

A score-driven look at Opti Greens 50's value case, 5B CFU probiotic blend, enzyme positioning, and blend-level label math.

Last reviewed: 2026-06-04

Contamination law guide

Law guide

California SB 1033 explained: the protein powder heavy-metal bill

A plain-English read of California's proposed protein-product heavy-metal testing bill, current status, public disclosure rules, and buyer impact.

Last reviewed: 2026-06-04

Ingredient evidence guide

Evidence guide

Bovine colostrum: claimed benefits vs what is actually proven

A skeptical read of bovine colostrum immune and gut-health claims, product variability, milk-allergen labeling, and what the evidence can actually support.

Last reviewed: 2026-06-04

Ingredient guide

Dose guide

Creatine for women: what the renaissance is actually about

A source-grounded guide to creatine monohydrate, women-focused marketing, evidence limits, dose clarity, and testing posture.

Last reviewed: 2026-06-04

Mineral label guide

Label guide

Magnesium glycinate vs oxide: what the cheap forms actually mean

A label-first guide to elemental magnesium, glycinate marketing, oxide tradeoffs, Daily Value math, and tolerance claims.

Last reviewed: 2026-06-04

Label claim guide

Claim guide

GLP-1-friendly supplements: marketing label or real thing?

A conservative read of GLP-1-friendly supplement claims, protein and fiber marketing, medication-adjacent caveats, and what the label should prove.

Last reviewed: 2026-06-03

Easy methodology guide

Score guide

How we score a greens powder 0-100

A plain-English guide to NutriScore's buyer score: label transparency, dose clarity, testing posture, claim discipline, additives, and price context.

Last reviewed: 2026-06-03

Easy label guide

Label guide

Sucralose, Red 40, and gums: what additives in your powder do

A practical guide to sweeteners, colors, gums, flavors, and what additive lists can tell you about a powder label.

Last reviewed: 2026-06-03

Easy ingredient guide

Ingredient guide

Electrolyte mixes decoded: what the sodium is for

A light guide to sodium, potassium, magnesium, hydration claims, and how to read electrolyte packets without overbuying the hype.

Last reviewed: 2026-06-03

Protein label guide

Label math

Whey isolate vs concentrate: what the tub is actually telling you

A plain-English read of whey isolate, whey concentrate, protein grams, calories, allergens, and when the upgrade is worth caring about.

Last reviewed: 2026-06-03

Protein scoop math

Dose guide

How much protein powder do you need? Scoop math before you buy

A simple way to calculate daily protein targets, food-first intake, scoop gaps, and when an extra serving is just expensive powder.

Last reviewed: 2026-06-03

Protein source guide

Source guide

Plant protein vs whey: what "complete protein" really means

A practical guide to complete protein, essential amino acids, whey, soy, pea and rice blends, allergens, and label clarity.

Last reviewed: 2026-06-03

Testing guide

Testing guide

NSF Certified for Sport vs Informed Sport: what badges mean

A practical guide to sport supplement certification badges, vague third-party testing claims, and what a missing badge does or does not tell you.

Last reviewed: 2026-06-03

Contamination guide

Safety guide

Why greens powders can carry more heavy metals than vegetables

The water-removal math behind concentrated plant powders, heavy-metal testing, and why a buyer-useful COA needs serving-size numbers.

Last reviewed: 2026-06-03

Ingredient guide

Dose guide

Creatine monohydrate vs gummies vs fancy forms: does it matter?

A label-first read of creatine forms, gummies, premium claims, grams per serving, and why monohydrate remains the default to beat.

Last reviewed: 2026-06-03

Easy label guide

Dose guide

Clinically significant dose vs whatever is on the label

A plain-English guide to matching supplement dose claims against the label, the evidence, and the math hiding behind clinically studied language.

Last reviewed: 2026-06-03

Easy label guide

Label guide

What is fairy dusting? The tiny-dose label trick in plain English

A lighter NutriScore guide to tiny-dose label theater, proprietary blends, and how to tell when a buzzy ingredient is doing more marketing than work.

Last reviewed: 2026-06-03

Easy label guide

Label guide

Proprietary blend is a red flag: how to read past it

A plain-English guide to what proprietary blends tell you, what they hide, and how to read the blend without assuming the worst.

Last reviewed: 2026-06-03

Contamination guide

Safety guide

How much lead is in your greens powder? What tests show

A buyer-focused read of public lead testing, Prop 65, FDA reference levels, ConsumerLab notices, and what a useful COA should show.

Last reviewed: 2026-06-03

Brand teardown

74/100

Organifi Green Juice teardown: organic signal, weight-loss pitch

A score-driven read of Organifi's organic claims, current price, ashwagandha weight-loss pitch, public COA, and Prop 65 lead warning.

Last reviewed: 2026-06-02

Brand teardown

74/100

Why some Reddit users say they canceled their AG1 subscription

A skeptical look at AG1 cancellation complaints: price, dose opacity, mixed bloating reports, podcast-ad fatigue, and when keeping it still makes sense.

Last reviewed: 2026-06-02

Brand comparison

76/100

AG1 vs Green Vibrance vs Opti Greens 50: price and label verdict

A score-and-price comparison of AG1, Green Vibrance, and Opti Greens 50 focused on label transparency, certification, and value.

Last reviewed: 2026-06-02

Comparison guide

71/100

AG1 alternatives that cost a third as much (and how they score)

A price-and-score breakdown of cheaper AG1 swaps, separating true one-third-cost picks from better-scoring but not-that-cheap alternatives.

Last reviewed: 2026-06-02

Brand teardown

74/100

Is AG1 worth $99 a month? An honest score after reading the label

A label-first score of AG1's testing posture, current pricing, hidden individual doses, and whether the convenience earns the premium.

Last reviewed: 2026-06-02