
Thorne
Iron Bisglycinate
25 mg of chelated iron (Ferrochel bisglycinate) in a small, NSF Certified for Sport capsule; gentler than iron salts for most, but only for people who need iron.
Top picks
Ranked by our five-factor score — evidence, purity, value, experience and transparency.

Thorne
25 mg of chelated iron (Ferrochel bisglycinate) in a small, NSF Certified for Sport capsule; gentler than iron salts for most, but only for people who need iron.

Transparent Labs
A fully transparent, Informed Choice-certified pre-workout with 8 g citrulline malate, 4 g beta-alanine and a moderate 200 mg of natural caffeine.

Legion
Fully dosed and naturally sweetened: 8 g citrulline malate, 3.6 g beta-alanine and a hefty 350 mg of caffeine balanced by 350 mg of L-theanine.
14 products

Thorne
25 mg of chelated iron (Ferrochel bisglycinate) in a small, NSF Certified for Sport capsule; gentler than iron salts for most, but only for people who need iron.

Transparent Labs
A fully transparent, Informed Choice-certified pre-workout with 8 g citrulline malate, 4 g beta-alanine and a moderate 200 mg of natural caffeine.

Legion
Fully dosed and naturally sweetened: 8 g citrulline malate, 3.6 g beta-alanine and a hefty 350 mg of caffeine balanced by 350 mg of L-theanine.

A fully disclosed, clinically dosed pre-workout (300 mg caffeine, 6 g citrulline, 3.2 g beta-alanine) wrapped in GHOST's popular licensed candy flavors.

Vega's sport protein, formerly Vega Sport Premium Protein: 30 g plant protein, tart cherry and a probiotic per scoop, NSF Certified for Sport.

An Informed Sport-certified, vegan pre-workout with 274 mg natural caffeine and 6.5 g citrulline, though its beta-alanine and creatine are under-dosed.

Garden of Life
A 30 g vegan protein built for athletes: organic pea and bean proteins, NSF Certified for Sport, plus recovery botanicals and a probiotic.

RYSE
A TikTok Shop best-seller with solid citrulline and beta-alanine doses and licensed candy flavors, but caffeine ranges from 300 to 390 mg by flavor.

Informed Choice-certified fizzy tablets with 300 mg sodium and 1 g sugar per 16 oz: clean, affordable everyday and workout hydration, but light for salty sweaters.

A doctor-developed, ORS-style mix with 330 mg sodium per 8 oz, one of the stronger drinks in its class, backed by a small randomized trial. Pricier than it looks.

Alani Nu
A flavor-first, beginner-friendly pre-workout with 200 mg caffeine and 200 mg L-theanine; its pump and endurance ingredients are lightly dosed.

1,000 mg sodium, 200 mg potassium and 60 mg magnesium with zero sugar. Excellent for heavy sweaters and low-carb eaters, but far more salt than most desk workers need.

Liquid I.V.
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.

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

What USP, NSF and Informed Sport seals actually test, how to verify a certification in two minutes, how to read a certificate of analysis, and where testing stops.
Nutrition Reviews Editorial Team · Sep 28, 2026

Most people don't need electrolyte powders, but some do. Learn how much sodium you lose in sweat, how oral rehydration works, and when a high-sodium mix makes sense.
Nutrition Reviews Editorial Team · Sep 28, 2026

From the 0.8 g/kg RDA to the new 1.2–1.6 g/kg guideline: daily protein targets by goal, grams by body weight, per-meal timing, and advice for aging, dieting and vegans.
Nutrition Reviews Editorial Team · Sep 28, 2026
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