The supplement directory

A hugely popular caffeinated amino drink: 100 mg natural caffeine plus a 5 g proprietary amino blend led by taurine, glutamine and arginine, so EAA doses are unknown.

A drug-free hair supplement built on the AminoMar marine complex plus zinc, vitamin C and modest biotin, with company-funded trials; cheaper than Nutrafol but still pricey.

America's best-known electrolyte stick: 560 mg sodium, 370 mg potassium and 11 g sugar per packet. Handy for sweaty days, but pricey and sugary for everyday sipping.

A '10 types of collagen' blend with vitamin C and a probiotic; heavily marketed, but the collagen sources sit in an undisclosed blend and it costs more per gram.

Two of the best-studied probiotic strains (LGG, BB-12) at 11B CFU guaranteed to expiration, plus a phage prebiotic and tributyrin. Top testing, premium price.

NSF Contents Certified berberine in HCl and phytosome forms. Well made, but the average weight change in trials is about 2 lb and it interacts with many drugs.

A cheap, single-ingredient konjac fiber (1,725 mg per serving) taken before meals for fullness. Honest and GMP-made, but the average weight effect in trials is small.

Dermatologist-favorite hair supplement, NSF Certified for Sport and now biotin-free and vegan; backed by company-funded trials but $88 a month and built on proprietary blends.

America's best-known budget pre-workout: 200 mg caffeine and great flavors, but beta-alanine, citrulline and creatine all sit below research doses.

Real organic dark-roast coffee (about 150 mg caffeine per cup) with 250 mg each of lion's mane and chaga; tastes like coffee, but mushroom doses are modest.

A certified-organic, unsweetened juiced-greens powder with 40 whole-food ingredients and no stevia; clean and affordable, but earthy tasting and dosed in blends.

One of the longest-selling greens powders: 5.4 g of grasses and greens plus a studied probiotic for under $1 a scoop, with plain-grassy taste and a Prop 65 lead warning.

A viral daily pack of greens gummies that delivers a real multivitamin and 6 g of fiber, but the 'superfoods' sit in one 8.7 g blend and the original has 8 g added sugar.

An NSF-certified grapefruit gummy with 2,500 mcg biotin, 50 mg keratin and vitamins C and E: well made and well liked, but backed by weak hair-and-nail evidence.

An allergen-friendly vegan shake with 20 g of pea and pumpkin seed protein and no artificial sweeteners, but lower-quality protein and too few calories for a meal.

TikTok's viral bedtime hot cocoa: a sensible 3 mg melatonin plus 300 mg L-theanine in a 15-calorie drink, but at roughly $1.80-$2.20 a serving you pay for the ritual.

A best-selling BCAA drink: 7 g BCAAs, glutamine and electrolytes with zero sugar, but BCAAs add little if you already eat enough protein.

A doctor-recommended single strain with IBS research behind it, but only 10 million CFU is guaranteed by the best-by date, and trial results are mixed.

A well-balanced, NSF Certified for Sport EAA formula with 1.25 g leucine per scoop, but only about 4 g of amino acids for roughly $1.73 a serving.

A budget biotin gummy with 70,000+ buyer ratings: 2,500 mcg biotin plus a little vitamin C and E for about $0.19 a day; weak evidence it helps without a deficiency.

The TikTok-favorite raspberry liquid multi: easy for pill-averse users, with active B vitamins, but almost no minerals and a small proprietary blend.

The TikTok-famous 'Sleepy Girl Mocktail' magnesium: tasty and third-party tested, but mostly laxative magnesium citrate at about $1.47 a serving.

Clean-label BCAA drink with 8 g fermented BCAAs, 5 g glutamine and no artificial sweeteners, but about $1.33 a serving and 1,500 mg of vitamin C per scoop.

The TikTok-famous 'debloat' greens drink: sweet, cheap per scoop and easy to mix, but built on seven proprietary blends with no probiotic CFU count.