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Single-ingredient performance

The supplement aisle is a scam.

Revvy makes nine single-ingredient products for endurance athletes. Each one shows you exactly what's inside, where it was sourced, and what the third-party lab says is in the bottle. NSF Certified for Sport. Hand-blended in Boulder. Subscribe and save 18%.

Shop the line See our standards
NSF · SportBanned-substance tested
3rd-Party LabCOA on every bottle
Boulder, COHand-blended in Boulder
Revvy product line — nine single-ingredient bottles
NSF SPORT THIRD-PARTY TESTED VEGAN
Free shipping over $60 30-day refund, no questions Subscribe & save 18% Made in Boulder, CO
The line

Nine products. One ingredient each.

Revvy Creatine MonohydrateBESTSELLER
Strength · 60-day supply

Creatine Monohydrate

Creapure-sourced. 5g per scoop. Unflavored. The most-studied performance ingredient on earth.

★★★★★ 4.9 · 2,418 reviews
$36$28
Revvy Beta-Alanine
Endurance · 90-day supply

Beta-Alanine

CarnoSyn-sourced. 3.2g per dose. Buffers lactic acid for the last 90 seconds of your VO2-max effort.

★★★★★ 4.8 · 1,074 reviews
$32
Revvy L-Citrulline
Pump · 60-day supply

L-Citrulline Malate

Pharmaceutical-grade. 8g per dose, 2:1 ratio. Pumps that don't fade at minute 35.

★★★★★ 4.9 · 612 reviews
$34
Revvy Whey IsolateNEW
Recovery · 30-day supply

Grass-Fed Whey Isolate

90% protein per scoop. New Zealand grass-fed. Vanilla, chocolate, unflavored. No artificial sweeteners.

★★★★★ 4.9 · 980 reviews
$58
Revvy Caffeine Anhydrous
Pre · 60-day supply

Caffeine + L-Theanine

200mg + 200mg per cap. Clean-edged focus, no jitter, no crash. Stack for cognitive workouts.

★★★★★ 4.7 · 1,802 reviews
$24
Revvy Magnesium Glycinate
Recovery · 90-day supply

Magnesium Glycinate

Albion-chelated, 400mg per dose. Sleep quality, muscle relaxation, the magnesium that doesn't trash your gut.

★★★★★ 4.9 · 1,406 reviews
$28
Revvy Electrolyte Mix
Mid · 30-day supply

Electrolyte Mix

1,000mg sodium, 200mg potassium, 60mg magnesium. Citrus, salt-lemon, unflavored. The mix endurance athletes actually need.

★★★★★ 4.8 · 2,210 reviews
$32
Revvy Tart Cherry
Recovery · 60-day supply

Tart Cherry Concentrate

CherryPURE-sourced. Polyphenol-rich, anti-inflammatory, sleep-supporting. The recovery move with actual research.

★★★★★ 4.9 · 514 reviews
$30
Bundles

Three stacks. Save up to 22%.

The combinations our most-disciplined athletes actually run. Bundle once, subscribe, run for the season.

Starter stack
— STARTER

The Foundation

Three products our coaches recommend if you take nothing else.

Creatine Monohydrate · Magnesium Glycinate · Electrolyte Mix
$88$72
SAVE 18%
Add bundle →
Endurance stack
★ ENDURANCE

The Engine

For runners, cyclists, and Iron-distance athletes. Subscribe and save another 18% on top.

Creatine · Beta-Alanine · L-Citrulline · Electrolytes · Tart Cherry
$156$122
SAVE 22%
Add bundle →
Strength stack
— STRENGTH

The Builder

For lifters and hybrid athletes. Recovery-heavy stack with the tart cherry add-on.

Creatine · Whey Isolate · Caffeine + Theanine · Tart Cherry
$140$112
SAVE 20%
Add bundle →
Subscribe & save

18% off. No commitment.

The supplement industry built itself on auto-renew traps that take three phone calls to cancel. We did it differently. Pause from the dashboard. Cancel from the dashboard. Skip a month from the dashboard. No "let me transfer you" loops, no surprise bills.

Subscribe to any single product or bundle, save 18% off the one-time price, and we'll ship on your cycle — every 30, 60, or 90 days, your choice.

Standards

What's actually
in the bottle?

Most supplement labels lie. Industry-wide testing reveals 60% of products on Amazon contain undisclosed banned substances or under-dose the labeled active ingredient by 30%+. We publish every Certificate of Analysis on our site. Match the lot to the label and the bottle in your hand.

— 01

NSF Certified for Sport

Every batch is independently tested for the WADA banned-substance list before it leaves Boulder. Verifiable on the NSF website by lot number.

— 02

Third-party COA

Every bottle has a unique lot number printed on the cap. Type that lot into our site and read the full Certificate of Analysis from Eurofins Labs.

— 03

Single-ingredient

No proprietary blends. No "performance matrix." If you can't read the actual milligram amount of every active, you don't know what you're taking.

— 04

Sourced, named

Creapure creatine. CarnoSyn beta-alanine. Albion magnesium. CherryPURE tart cherry. We pay extra for the branded raw materials with the published research.

Verified buyers

What athletes say.

4.86
★★★★★
across 11,400+ verified reviews
★★★★★
— CREATINE MONOHYDRATE

"Best creatine I've found."

Switched from a popular brand last year. Tastes neutral, mixes clean, no bloat. The COA on the bottle was the closer for me. I subscribe now.

Renata D. · Cyclist · CO
VERIFIED
★★★★★
— ELECTROLYTE MIX

"Iron Man dialed in."

Salt-lemon flavor, not the candy-cane sugar bomb of the big-name brands. Full Iron without cramps for the first time in 12 races.

Marcus T. · Triathlete · TX
VERIFIED
★★★★★
— MAGNESIUM GLYCINATE

"Sleep upgrade."

My oura ring went from 75 to 89 average within three weeks. The chelated form makes a difference. Won't switch.

Priya K. · Runner · NY
VERIFIED
★★★★★
— BETA-ALANINE

"Last 90 sec changed."

Climbing-specific use. The end of the Yosemite Slabs route was always where I got pumped out. Two months in and I'm topping out fresh.

James R. · Climber · CA
VERIFIED
★★★★★
— THE ENGINE BUNDLE

"Whole stack worth it."

Subscribed at the start of marathon block. PR'd Boston by 6 minutes. Subscribe-and-save dashboard is the cleanest I've seen.

Saskia W. · Marathoner · MA
VERIFIED
★★★★★
— TART CHERRY

"Recovery game-changer."

DOMS went down dramatically. The COA shows actual anthocyanin content. The big-box brands hide the dose. I appreciate the transparency.

Curtis L. · Lifter · IL
VERIFIED
◆ Press & mentions
Outside Editor's Choice · 2025 Wirecutter Best Creatine · 2024 Runner's World Recovery Hero · 2024 VeloNews Endurance Pick · 2025 Forbes Athlete-Founded · 2024
Revvy founder Hannah Cole at the Boulder facility
Founder

Hannah Cole. Pro cyclist turned chemist.

Hannah raced UCI Continental for six years, retired in 2018, then enrolled in CU-Boulder's organic chemistry program because she could not find a creatine product that wasn't either fake or laughably overpriced. She started Revvy in 2021 from a 220-sqft Boulder garage. Today the team is twelve people and the line ships to all fifty states.

Hannah still hand-blends every product launch herself. Every new formula gets tested by Revvy's six-athlete advisory board (Iron Man, ultra, climbing, Crossfit Games, road cycling, NCAA D1 swimmer) before it goes to production. Nothing leaves Boulder until the COA matches the label, twice.

"The supplement aisle isn't an aisle, it's a casino. We started Revvy to give endurance athletes a counter without a slot machine."— Hannah Cole
Questions

Before you order.

How fast does it ship?

Free U.S. ground over $60. Orders placed by 1 PM MT ship same day from our Boulder warehouse. Most U.S. customers get product in 2-4 business days.

International shipping?

Canada, UK, EU, Australia, NZ. Customs duty is the buyer's responsibility. Shipping is calculated at checkout based on destination.

Returns?

30 days, no questions. Used or unused. Email support@revvy.co with your order number; we issue a full refund and a return label within one business day.

Subscribe & save?

18% off any product, any bundle, any cycle. Pause, swap, or cancel from your dashboard in two clicks. We never auto-renew anything you didn't agree to.

Out-of-stock alerts?

Yes. Sign up on the product page; we email and SMS the moment your size is back. Subscribers get first dibs by 24 hours.

Are you sponsored or partnered?

No. Revvy is independent and self-funded. We do not have a parent supplement holding company. Hannah is the majority shareholder.

Why is the line so small?

Nine products is what an endurance athlete actually needs. We don't make a thirty-product line because thirty products is how you hide the bad ones.

Wholesale?

B2B available for gyms, climbing yards, and endurance teams. Email partners@revvy.co. Net-30 terms after the second order.

Stop guessing. Read the COA.

Subscribe to any product, save 18%, ship on your schedule. Pause or cancel anytime from the dashboard.

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