FREE SHIPPING on orders of $50 or more.* Same day shipping before 3PM Pacific.
Questions? Call our experts!
Click to zoom

First Endurance
Optygen HP Capsules (120 Capsules)

  (2 customer reviews)
Earn $7.99 in Rewards credit (799 points) What's This?
This color/size is not eligible for Rewards points
In Stock Now
This item is currently out of stock. Click Notify Me to receive an email when the item becomes available.
InstantPrice MatchWhat is this?
Qualifies for Free Shipping!

Better than ever. Optygen is a safe, legal training aid formulated to aid training and enhance recovery. This updated formula now contains Rhodiola, increasing potency by 67%. First Endurance chemists rely on state of the art research to formulate a product designed to safely help you reach your athletic goals. Benefits include:

  • Increases Endurance and Performance
  • Reduced Lactic Acid
  • Increases oxygen utilization
  • Increase in VO2 Max
  • Increase in Time to Exhaustion
  • Increase Anaerobic threshold
  • Improved exercise capacity
  • Increase Maximal Oxygen uptake
  • 30% - 50% increase in Oxygen Utilization
  • Increase ratio of ATP by 45% - 55%
  • Increase in ATP production

Optygen's effects are best experienced after prolonged use of the product. Users will experience minimal benefits with irregular usage. 30 servings per container (120 capsules 4 times per day).

Ordered by Most Relevant First
5 stars
4 stars
3 stars
2 stars
1 stars
It works
by Joe
Chapin, SC
1 of 1 customers found this review helpful.

I have seen a drastic improvement in my Running times and Triathlon times. On my 3rd bottle.

Reviewed 7/28/2017
Was this review useful to you? Yes/No
Thank you for your feedback.
Improved recovery time
by Can''t get enough bike
Cycling Enthusiast
Planet Earth

Used for a couple of years after reading a positive review by a medical professional who was taking it himself. I cannot claim any better performance, but I do believe that my recovery time after intense or endurance events was much improved. Ultimately I stopped taking this as this expense is so high.

Reviewed 9/13/2017
Was this review useful to you? Yes/No
Thank you for your feedback.
A guide to keeping your body properly fueled and hydrated on your bike.
What you need for a road ride.