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02 During

Intra-activity

drink
gel
VICTUS_02 During Pineapple DEF US Front
02 During Gel Hibiscus DEF US Front

The most efficient fuelling system

Each unit of 02 During contains 45 grams of carbohydrates (2:1:1.5 ratio) and 343mg of sodium, regardless of form - drink or gel (bar coming soon).

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Both the drink and gel contain the exact same nutrients, so you can use either one without changing your planning. Each unit contains 45 grams of carbohydrates in a unique triple-carb 2:1:1.5 ratio, and 343 mg of sodium. The result: sustained energy and hydration throughout your training or race, minimised risk of GI issues, and uncompromised efficiency.

Keep the system going

RubenTrail_0025 5

One closed system

Both the gel and drink deliver the same formula: 45 g carbohydrate and 343 mg sodium. This ensures easy planning - no adjustments, no surprises.

_VTH2191 4

Fuel to last, not fade

Our triple-carb formula optimises carbohydrate absorption by utilising multiple absorption pathways and optimising osmolarity. This results in more uptake, improved gut comfort, and reliable energy in your longest sessions.

Web-during-2

Proven where it counts

Validated in training and racing with elite professionals. Consistent fuelling builds resilience, tested where pace, pressure, and performance converge.

02 During

Key benefits

Serving elite athletes & teams worldwide.
Light and easy on the stomach with clean, subtle flavours.
Developed with the world's leading universities.

Drink mix (ISO) - 45g CHO (2:1:1.5) & 343 Na⁺

A clean intra-activity drink mix delivering 45 g of carbohydrates and 343 mg of sodium. Utilising a unique 2:1:1.5 ratio of maltodextrin-glucose-fructose to minimise GI issues and optimise energy availability. Suitable for vegetarians and vegans.

What sets it apart
• Clear hourly intake logic
◦ 1 - 2 hour sessions: one unit/hour
◦ 2+ hour sessions: two units/hour
• Includes a mix of fast- and slow-absorbing carbohydrate sources
• Built on a 2:1:1.5 ratio - structured around dual absorption pathways
• Designed for simplicity - no novel fillers or unnecessary complexity
• Isotonic when mixed with 600-700 ml of water
• Third-party tested for quality and composition

Gel - 45g CHO (2:1:1.5) & 343 Na⁺

A clean intra-activity gel delivering 45 g of carbohydrates (2:1:1.5 ratio) and 343 mg of sodium. Formulated with maltodextrin, glucose, fructose, and sodium chloride. Suitable for vegetarians and vegans.

What sets it apart
• Clear hourly intake logic
◦ 1 - 2 hour sessions: one unit/hour
◦ 2+ hour sessions: two units/hour
• Includes a mix of fast- and slow-absorbing carbohydrate sources
• Built on a 2:1:1.5 ratio - structured around dual absorption pathways
• Designed for simplicity - no novel fillers or unnecessary complexity
• Third-party tested for quality and composition

How to use & the ecosystem

The use of 02 During depends on your training duration and intensity:

Less than 1 hour
The body typically has sufficient glycogen stores for activities under an hour, so additional carbohydrate intake isn't necessary. However, for high-intensity sessions (Zone 4/5), consider using 02 During: Drink. Ensure to drink water as required.

1-2 hours
During this period, aim for 45 grams of carbohydrates per hour, equivalent to 1 unit per hour. Remember to monitor hydration and replace electrolytes as needed.

2+ hours
For extended endurance activities, consume two units or 90 grams of carbohydrates per hour.

If you want to know exactly when to use it, try our free Fuel & Hydration guide.
How to use Use one or two units per hour, depending on intensity & duration.

Receive your personalised
Fuel & Hydration guide.

Get your personalised Fuel & Hydration guide and get your nutrition right. Know exactly when to use each product for your next training session, race or event.

Ecosystem ID 0.1
Athlete type To be defined
Date Fri 30 Jan 2026
Warrior To be defined
52.2953° N, 5.1604° E
Try our Fuel Guide

Reviews

Excellent 4.8 out of 5.0

Use this on many of my brick sessions, it's very helpful to have and the flavors are great. I highly recommend it.

Mateo C.

5.0
Trustpilot

Great taste and the effect was felt right away. Took this in the middle of a marathon and it gave a nice boost of fuel.

Jesse W.

5.0
Trustpilot

Great consistency and a great taste! Ordering more of these for my NYC marathon!

Denise T.

5.0
Trustpilot

The best products on the market right now. The effects on my performance are noticed right away. No thick shakes, but easy to drin...

Matthijs Büchli

5.0
Trustpilot

This product packs a ton into a single gel without costing too much. Big fan of how much sodium and carbs you get for the price.

William G.

5.0
Trustpilot

I used this for my triathlon race and the during was absolutely amazing. I love all three. The pre is the perfect pre workout to g...

Timothy H.

5.0
Trustpilot

Definitely speeds up recovery and is now my go to after longer rides or hard efforts. Very noticeable improvement in recovery for...

Troy H.

5.0
Trustpilot

Game changer in my recovery and tastes good too.

Ryan P.

5.0
Trustpilot

Great products and service. Victus completely covered the gap by creating something I can easily use before, during and after my e...

Marc

5.0
Trustpilot
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The ultimate Fuel System: Before, During, After.

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The Science

Explore the in-depth scientific research that has gone into the development of our products. Gain unlimited access to all 1,128 publications utilised throughout the extensive research process.

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