Endurance Supplement

The Why
  • Formulated to optimize endurance athletes performance*
  • Improves oxygen utilization*
  • Boost muscular strength*
  • Increases aerobic threshold & reduce lactic acid*
About Autoship

Autoship is a free program which automatically reorders your favorite products each month.

How Autoship works :

  • Select an eligible item and Add to Autoship
  • Setup shipping and billing information
  • Update quantities and confirm delivery schedule

That's it. We'll automatically place your orders and deliver them on your next scheduled Autoship order day.

Benefits :

Get discounts on our everyday price

  • Pay for each order only when the item is shipped.
  • Easily update products, skip a delivery, or get an extra delivery when you need it
  • No commitments, obligations, or fees

Subscription Details

Billing Max Cycles Repeats until failed or canceled

It’s Sherpa-tested. There’s no way you can go wrong.

OptygenHP by 1st Endurance isn’t for everyone. You won’t need it to walk your dog or speed walk around the shopping mall. But if you’re a marathoner, triathlete or elite endurance athlete, that’s another story.
The two main adaptogens in OptygenHP (Rhodiola and Cordyceps CS-4) were first used by Tibetan Sherpas to help them climb Mt. Everest. OptygenHP also contains Beta-Alanine because clinical research shows it increases exercise capacity and muscular strength.*
What can OptygenHP do for you?
- Increase your VO2 Max*
- Helps you better adapt to high levels of physical stress*
- Increase your anaerobic threshold*
- Reduce lactic acid*
Give OptygenHP a try when you’re training for your next race.
*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.