Three products. Every part of your training day.
Use them on their own or together. Each one does a different job.
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Daily foundation
EPO Boost
4.8(908 reviews)
Daily support for your endurance base.
- Iron, B12, folate and vitamin C
- Supports healthy red blood cell production*
- Take it every day with meals
Shop EPO Boost$59.95
Subscribe & save + free shipping
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Pre-session
VO2 Boost
4.8(146 reviews)
Take it 30 to 60 minutes before training.
- Beta-alanine, rhodiola and cordyceps
- Iron, B12, folate and vitamin C
- Supports endurance and training capacity*
Shop VO2 Boost$59.95
Subscribe & save + free shipping
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During and after
TriFuel
4.9(212 reviews)
Carbs, electrolytes and aminos in one drink.
- Carbs plus sodium, potassium, magnesium
- BCAAs, glutamine, citrulline, arginine
- Wild Berry or Lemon Lime
Shop TriFuelFrom$59.95
Subscribe & save + free shipping
*These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.
All three. One order. Save 25%.
Build with EPO Boost, perform with VO2 Boost, fuel and recover with TriFuel. Subscribe and save 25% on every delivery, with free shipping.
When you subscribe, per delivery. One-time price $179.85. Free shipping.
See the Endurance StackHow the three fit into your training day.
A simple rhythm built from the directions on each product: a daily foundation, a pre-session boost, then fuel and recovery.
- With meals
Lay the foundation
EPO Boost
Take it every day of your training block, not only on the hard days, so it is part of your routine.*
2 capsules twice daily with meals
- Before training
Get ready to work
VO2 Boost + TriFuel
VO2 Boost 30 to 60 minutes before your session. Start your TriFuel carbs, electrolytes and BCAAs so you begin topped up.*
VO2 Boost: 2 capsules with water. TriFuel: 1 serving (about 2 scoops) in 8 to 20 fl oz of water, 30 minutes before.
- During
Keep fueling
TriFuel
Steady carbs and electrolytes help keep your energy and fluid balance on track through the long efforts.*
1 serving about every 90 minutes
- After
Start recovery
TriFuel
BCAAs and L-glutamine support lean muscle repair after a hard day.*
1 serving as part of your recovery routine
Follow the directions on each product's label. Talk with your healthcare professional before starting any supplement. *These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Make it a routine. We make it worth it.
Endurance supplements are built for daily use. Subscribe so you never run out mid training block, and get more back every order.
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Save on every order
Subscribe and save 25% on the Endurance Stack, every delivery.
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Cash back
Earn cash back on your subscription orders. (REPLACE WITH YOUR EXACT PROGRAM TERMS)
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Free shipping
Free shipping on every subscription delivery.
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Total control
Skip, pause, swap flavors or cancel anytime. No contracts.
Skip, pause or cancel anytime. Backed by our 90-day money-back guarantee.
Training or traveling at altitude?
Two formulas made for life above sea level.
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High-altitude trips
Altitude RX
For skiing, hiking, climbing and other trips up high.
- Vitamin C, vitamin E, alpha-lipoic acid and ginkgo
- Start 24 hours before you travel up
- 2 capsules twice a day while you are there
Shop Altitude RX$34.95
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Altitude training support
Altitude Boost
Altitude training support, without the travel.
- Vitamins, iron and an Elevation Activator Complex
- Take 2 tablets daily with a meal
- Monthly or 3-pack subscription
Shop Altitude Boost$44.95
Subscribe & save + free shipping
THIRD-PARTY TESTED
All BRL supplements are third party tested for banned substances, quality standards and label accuracy.
100% Drug Free
Natural solutions, backed by science, trusted by professional athletes.
Trusted by World-Class Champions
Chosen by elite athletes worldwide to fuel peak performance.
Reviewed by athletes who use them.
Ratings from the three products in the Endurance Stack.
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EPO Boost
908 reviews
Read reviews -
VO2 Boost
146 reviews
Read reviews -
TriFuel
212 reviews
Read reviews
Ratings and review counts are from each product's page. Individual results vary.
Questions, answered
Everything to know before you order.
Which product should I start with?
Many athletes start with EPO Boost, a daily formula taken with meals, then add VO2 Boost before key sessions and TriFuel for fueling and recovery. The Endurance Stack puts all three in one order at 25% off when you subscribe. Talk with your healthcare professional before starting any supplement.
Is EPO Boost the same as the drug EPO?
No. Despite the name, EPO Boost is a dietary supplement. It does not contain erythropoietin (the banned hormone EPO) or any drug. It is made of vitamins, iron and plant extracts, and the full Supplement Facts are on its product page.
How does subscribing work?
Subscribe and your supply arrives on the schedule you choose, with free shipping on every subscription delivery. You can skip, pause or cancel anytime from your account. Prefer not to subscribe? Buy any product one time.
What is your guarantee?
Your first order is backed by our 90-day money-back guarantee. It applies once per person in the USA and excludes purchases from international distributors or resellers. See the Money-Back Guarantee and Returns/Cancellations pages for the full terms.
I compete in a tested sport. What should I know?
BRL Sports formulas are drug-free. If you compete in a tested sport, review the full ingredient list of each product and your governing body's rules before you use them.
Does TriFuel contain caffeine?
Only the Wild Berry flavor does: 60 mg of caffeine per serving. Lemon Lime is caffeine free. Both flavors contain 100 mg of L-theanine.
Should I talk to a doctor first?
Talk with your healthcare professional before starting any supplement, especially if you are pregnant or nursing, have a medical condition, or take medication.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.