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Omega 3 Fish Oil Capsules

£25.00

From £0.72 per serving.

Certified quality in the dose you actually need.

Most people who train don't eat oily fish twice a week. MARCHON Omega 3 gives you 1,000mg EPA and 400mg DHA in two capsules a day, from an EPA-led fish oil with natural vitamin E.

  • 1,000mg EPA + 400mg DHA per two-capsule serving

  • EPA and DHA contribute to the normal function of the heart*

  • DHA contributes to the maintenance of normal brain function and normal vision*

  • IFOS certified, made to the GOED quality standard and listed on the Cologne List®

*The beneficial effect is obtained with a daily intake of 250mg EPA and DHA (heart) and 250mg DHA (brain and vision).

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When to Use
  • Take two capsules daily with food.

Preferably take with your largest meal of the day, to aid absorption of fatty acids and Vitamin E. Consistent daily use delivers the best results.

Expected Results
  • Recovery
  • Heart Health
  • Joints + Mobility
  • Performance
  • Brain

Omega-3 levels build gradually. Take two capsules every day with your largest meal. Most omega-3 studies run for 6 to 12 weeks or longer, so think in months, not days.

EVERYTHING AT A GLANCE

How to Use Plus

FAQs Plus

What is MARCHON Omega 3?
A high-strength fish oil: 1,000mg EPA and 400mg DHA in two capsules a day, with 8mg natural vitamin E.

Who should take it?
Anyone who trains and doesn't eat oily fish most weeks.

What makes it different from other omega-3s?
1,400mg EPA + DHA in two capsules, EPA-led. IFOS certified, made to the GOED quality standard and listed on the Cologne List®. And no fishy aftertaste, the top theme in our reviews.

What are the key benefits?
EPA and DHA contribute to the normal function of the heart. DHA contributes to the maintenance of normal brain function and normal vision. Vitamin E contributes to the protection of cells from oxidative stress. The heart, brain and vision benefits are obtained with a daily intake of 250mg EPA and DHA, and 250mg DHA.

Does omega-3 help with exercise recovery?
It's an active area of research. Meta-analyses in healthy adults report less muscle soreness and lower markers of muscle damage and inflammation after hard exercise, with the clearest effects at 2g or more of EPA and DHA a day over at least 6 weeks. Another review found the effect on soreness too small for most people to notice.

Recovery isn't an authorised health claim for omega-3, so we don't claim MARCHON Omega 3 improves it. What each daily serving does give you is 1,400mg EPA and DHA: EPA and DHA contribute to the normal function of the heart. The studies are in the Research tab.

How and when should I take it?
Take two capsules daily with food, preferably your main meal.

Can omega 3 fish oil support heart health?
Yes. EPA and DHA contribute to the normal function of the heart, with a daily intake of 250mg. Each serving gives 1,400mg.

How does omega 3 fish oil help maintain normal brain function?
Omega 3 fish oil contains DHA, which is present in large quantities in the brain. Taking a supplement or eating a diet rich in oily fish with omega 3 helps increase your daily intake of DHA.

What is omega 3 fish oil?
Omega-3 fish oil provides EPA and DHA, the long-chain omega-3 fats found in oily fish. The body makes very little of them from plant omega-3.

Can I combine it with other supplements?
Yes, it pairs effectively with protein, recovery, and daily wellbeing products for complete nutritional support.

Is it safe to take long-term?
Take as directed. Speak to your doctor first if you take blood-thinning medication, have a bleeding disorder or a heart rhythm condition, or are pregnant or breastfeeding. Contains fish.

Can I take it during pregnancy?
Omega-3s are essential fatty acids that support maternal and infant health. However, MARCHON Omega-3 is a high-strength athletic formulation. If you are pregnant, breastfeeding, or planning to conceive, please consult your GP or midwife before use.

Ingredients Plus

Fish Oil Concentrate (EPA-led, 50/20)
Dosage: 2 capsules = 1,000mg EPA + 400mg DHA (at least 1,400mg total omega-3)

EPA and DHA contribute to the normal function of the heart. DHA contributes to the maintenance of normal brain function and normal vision. The beneficial effect is obtained with a daily intake of 250mg EPA and DHA, and 250mg DHA.

_____
Vitamin E (natural d-alpha-tocopherol): 8mg per 2-capsule serving (66% NRV)

Vitamin E contributes to the protection of cells from oxidative stress. It also helps keep the fish oil stable.

_____
Purity and Testing:
- Third-party verified for heavy metals, oxidation, and contaminants.
- Listed on the Cologne List®.
- Produced under Good Manufacturing Practice (GMP) and full quality assurance procedures.
- IFOS certified (International Fish Oil Standards).
- Made to the GOED quality standard (Global Organization for EPA and DHA Omega-3s).

Contains fish.

Nutrition Breakdown Plus

Serving Size: 2 Capsules
Servings Per Container: 30

Per Serving:
2000mg Fish Oil Concentrate
At least 1400mg total omega-3
1000mg EPA (Eicosapentaenoic Acid)
400mg DHA (Docosahexaenoic Acid)
8mg Vitamin E (66% NRV)

Supporting research Plus

The research below looks at omega-3 (EPA and DHA) in general. It was not carried out on MARCHON Omega 3. Exercise recovery is not an authorised health claim for omega-3.

Omega-3 and people who train

ISSN position stand on omega-3 (2025)

The International Society of Sports Nutrition reviewed the research on omega-3 and exercise. It concluded that athletes may be at higher risk of low omega-3 levels, and that supplements are an effective way to raise them.

Omega-3 levels in college football players (2019)

Researchers measured the omega-3 index, the amount of EPA and DHA in red blood cells, in 404 US college football players. None reached the range linked with the lowest heart risk, and a third were in the highest-risk range.

Omega-3 and exercise recovery

Omega-3, inflammation and recovery in sport: meta-analysis (2026)

Pooling 41 randomised trials, omega-3 moderately reduced muscle soreness, a muscle-damage marker (creatine kinase) and two inflammatory markers (IL-6 and TNF-α) after exercise. Results for another marker, CRP, were inconsistent. The biggest effects were at 2g or more of EPA and DHA a day, taken for at least 6 weeks, and in recreational rather than elite athletes. MARCHON Omega 3 provides 1.4g a day.

Omega-3 and muscle damage after hard exercise: meta-analysis (2026)

Across 9 placebo-controlled trials of hard eccentric exercise, omega-3 was linked to less muscle soreness, less swelling, a lower muscle-damage marker and better strength and range of motion at the point of peak soreness. Looking at all 43 studies reviewed, the authors called the overall evidence mixed, couldn't say which dose works best, and called for better-designed studies.

Omega-3 and muscle soreness: meta-analysis (2020)

Across 12 trials, omega-3 reduced muscle soreness two days after eccentric exercise, but by less than the amount people typically notice. Strength and range of motion didn't change. The authors rated the evidence low quality.

What this means

The research on omega-3 and recovery is promising but mixed. The clearest effects come with regular use over several weeks, at doses of around 2g a day.

Shipping, Subscriptions & Returns Plus
Shipping

UNITED KINGDOM

We aim to dispatch your orders the same working day if the order is placed before 1pm. Any orders after this will be dispatched the following working day.

Our shipping options are : 

  • Standard 2-4 working days £3.95
  • Express 1 - 2 working days £5.95.

All orders over £50 qualify for FREE standard shipping, note a paid upgrade to express is still possible.

INTERNATIONAL

Similarly to domestic shipping We aim to dispatch your orders the same working day if the order is placed before 1pm GMT. Any orders after this will be dispatched the following working day.

Shipping rates vary depending on country and region but free shipping is available depending on order size for the USA, Australia, Europe and the UAE and international shipping starts at £7.

Subscriptions

You can edit your subscription here: LINK
Please note it is possible to delay your subscription delivery date as well as change an item as opposed to cancelling.

Returns

You have 14 days from the date of receiving your item to initiate a return with us.
Exchanges are eligible for free return postage - you can exchange for another size or product permitting the item you ordered has not been used or in the case of supplements has not been opened.  

You can find the return portal here: LINK
*refunds are charged a £3.99 handling fee - this will be deducted from your refund. 
**Bottles are non returnable.

MARCHON Athlete running with the sun behind them

THE MARCHON™ STANDARD

The MARCHON™ Standard is a set of guidelines that we have created internally that relies on external 3rd Party Testing and registered bodies to reinforce the efficacy of our products and their contents. Every supplement we create goes through a stringent development protocol to create the best supplements on the Market.

Signet Commitment To A Clean Sport

It is a promise to deliver supplements that support your health and performance without compromise. We don’t settle for mediocrity and neither should you. We believe that premium supplements should meet the highest standards of quality, efficacy, and transparency.

The Cologne List® is an independent initiative that publishes products that have been tested for banned substances by a world-leading anti-doping laboratory. Supplements on the Cologne List® have undergone rigorous testing to help ensure they are free from substances prohibited in sport.For athletes and active individuals, this provides an extra layer of trust.

Because what’s on the label should match what’s in the product. Third-party testing helps verify that: The formula contains what it claimsNo harmful contaminants are present (like heavy metals, pesticides, or microbes).

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