---
product_id: 738376212
title: "First Endurance Optygen, 0.3 Ounce"
brand: "first endurance"
price: "$187.83"
currency: USD
in_stock: true
reviews_count: 5
category: "First Endurance"
url: https://www.desertcart.us/products/738376212-first-endurance-optygen-0-3-ounce
store_origin: US
region: United States of America
---

# 30 servings for sustained gains Boosts aerobic metabolism Enhances oxygen absorption First Endurance Optygen, 0.3 Ounce

**Brand:** first endurance
**Price:** $187.83
**Availability:** ✅ In Stock

## Summary

> 🚴‍♂️ Elevate your endurance, recover like a pro, and never miss a beat!

## Quick Answers

- **What is this?** First Endurance Optygen, 0.3 Ounce by first endurance
- **How much does it cost?** $187.83 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/738376212-first-endurance-optygen-0-3-ounce)

## Best For

- first endurance enthusiasts

## Why This Product

- Trusted first endurance brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Clean & Legal:** Stimulant-free and fully compliant, so you perform at your peak without compromise.
- • **Balanced Energy:** Regulates blood sugar to keep your stamina steady through every workout.
- • **Slow-Burn Power:** Designed for gradual, lasting effects—notice real gains after consistent use.
- • **Endurance Unlocked:** Clinically inspired formula used by elite Sherpas and pro cyclists to elevate performance.
- • **Recovery Revolution:** Reduces lactic acid buildup so you bounce back faster and train harder.

## Overview

First Endurance Optygen is a stimulant-free endurance supplement with 30 servings per container, formulated to improve oxygen absorption, regulate blood sugar, and reduce lactic acid buildup. Trusted by elite athletes and designed for gradual performance enhancement and faster recovery.

## Description

If you're chemically inclined, you could spend a good afternoon reading about the science that goes into First Endurance's Optygen supplement. If you're more concerned with the end product and less about the hyper-complicated beta oxidations, calcium pyruvates, adaptogenetics, and chromium metabolites, focus on the easily understandable benefit: Optygen makes you faster and helps you recover more quickly. The how, obviously, is complicated, but suffice it to say that Optygen's combination of herbs, minerals, and compounds are designed to help regulate blood sugar levels, improve oxygen absorption, reduce lactic acid buildup, and increase aerobic metabolism. It utilizes ingredients that have been used by Sherpas to excel on Everest and by cyclists to win the Tour (and before you ask, yes, Optygen is completely legal, safe, and stimulant free). It's designed to work slowly, so you'll notice the effects after several weeks, not immediately, so have some patience and you'll see results.

Review: THE BEST
Review: I used this product for about 45 days before my last century. On the plus side, it definitely works. I feel like it allowed me to train harder and faster than my body was naturally capable of. That might sound like a positive, but I believe it caused me to over train, and I was pretty flat for the century. When I do my next century I will most likely start using it a just a week or two before the ride.

## Features

- Servings Per Container: 30
- Recommended Use: recovery, performance

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00EB8IYQE |
| ASIN  | B00EB8IYQE |
| Brand | FIRST ENDURANCE |
| Customer Reviews | 3.9 3.9 out of 5 stars (41) |
| Customer reviews | 3.9 3.9 out of 5 stars (41) |
| Date First Available | 23 August 2013 |
| Department  | unisex |
| Is Discontinued By Manufacturer  | No |
| Item model number  | 840069-01 |
| Manufacturer  | Inventory Management Services- HPC |
| Product Dimensions  | 6.35 x 6.35 x 5.72 cm; 226.8 g |
| Weight | 9 g |

## Product Details

- **Brand:** FIRST ENDURANCE
- **Colour:** One Color
- **Item dimensions L x W x H:** 6.4 x 6.4 x 5.7 centimeters
- **Item weight:** 0.5 Pounds
- **Manufacturer:** Inventory Management Services- HPC
- **Number of Items:** 1
- **UPC:** 000000821308

## Images

![First Endurance Optygen, 0.3 Ounce - Image 1](https://m.media-amazon.com/images/I/71ebLsx3l3L.jpg)
![First Endurance Optygen, 0.3 Ounce - Image 2](https://m.media-amazon.com/images/I/81d1P--JihL.jpg)
![First Endurance Optygen, 0.3 Ounce - Image 3](https://m.media-amazon.com/images/I/71ycbeaC2ZL.jpg)
![First Endurance Optygen, 0.3 Ounce - Image 4](https://m.media-amazon.com/images/I/71YUeeV9G6L.jpg)
![First Endurance Optygen, 0.3 Ounce - Image 5](https://m.media-amazon.com/images/I/81h7xAQXWiL.jpg)

## Questions & Answers

**Q: How do I maximize the benefits of Optygen?**
A: To maximize the benefits, take Optygen consistently during periods of intense training and racing. It helps your body adapt more effectively to physical stress, increases anaerobic threshold, and reduces lactic acid buildup—

**Q: Should I take Optygen every day?**
A: Yes—daily use is essential, even on rest days. Optygen works best when it's part of your everyday routine. Skipping days can reduce its effectiveness and limit the long-term benefits.

**Q: How soon will I notice results?**
A: Most users begin to notice improvements within about six days of consistent use. However, Optygen is designed for long-term results. For optimal performance gains, use it consistently over several months.

**Q: When should I take Optygen?**
A: It is best to take Optygen every day with a meal. This helps with absorption and digestion.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by R***O on 21 December 2025*

THE BEST

### ⭐⭐⭐⭐⭐ Review
*by M***L on 24 June 2017*

I used this product for about 45 days before my last century. On the plus side, it definitely works. I feel like it allowed me to train harder and faster than my body was naturally capable of. That might sound like a positive, but I believe it caused me to over train, and I was pretty flat for the century. When I do my next century I will most likely start using it a just a week or two before the ride.

### ⭐⭐ Review
*by A***S on 22 January 2026*

I think Optygen and First Endurance are great have used it a long time and it works great This is review is for delivery. This never arrived on time or as stated. I even subscribed and seem to get the delayed message. This product has a loading dose and its disappointing to not get it on the date its supposed to be delivered.

## Frequently Bought Together

- FIRST ENDURANCE Optygen - Premium Endurance Supplement | Boost Power | Increase Performance and Endurance | Improves Oxygen Utilization| 90 Capsules
- SPORTLEGS Fast Fitness Boost Pre Workout for Men and Women, Lactic Acid Supplement, Sports Endurance Fuel, Endurance Supplements for Runners - NSF Certified for Sport,120-Capsule Bottle, Pack of 1
- Pacific Health Endurox Excel Natural Performance Supplement, Increases Metabolism & Builds Endurance with Ciwujia (Ginseng) Root - 60 Caps

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-21*