Evidence Based Research
Our editorial team is made up of expert registered dietitians with extensive, real-world clinical experience who are highly trained in evaluating clinical research.
Read Our Editorial Policy

OmegaXL Review: Ingredients, Side Effects, Pros and Cons

Written by Lauren Panoff, MPH, RD

Reviewed by Anthony Dugarte, MD 

Last Updated on April 19, 2021

Our Expert Rating:


About This Rating
The average rating of this product is calculated based on the evaluation of the following factors:
  • Support for Claims:3.0
  • Ingredient Safety:2.0
  • Value for the Price:3.0
  • Brand Transparency:4.0

While there’s evidence to support the benefits of DHA and EPA in OmegaXL, I’m not sold on paying so much for a supplement that doesn’t explain the evidence behind its formulation.

OmegaXL Review: Ingredients, Side Effects, Pros and Cons


  • Adequate dosage of DHA and EPA.
  • There is substantial evidence that omega-3 fats are beneficial for joint health and inflammatory.
  • No fish aftertaste.
  • Convenient, easy-to-swallow capsule.


  • It’s unclear what the other 30 free fatty acids are in the product.
  • Does not bear a third-party testing and certification mark.
  • Seems to be much costlier compared to similar, green-lipped mussel products.
  • No information on exact ingredient amounts used in this product.

What Is OmegaXL?

OmegaXL is an omega-3 supplement intended to help alleviate joint discomfort and inflammation.

It is an alternative to fish oil. The formula claims to contain a proprietary complex of 30 fatty acids, including DHA and EPA.

Instead of fish, krill, or algae, this formulation uses green-lipped mussels from sustainable mussel farms off the coast of New Zealand.

OmegaXL contains the aforementioned omega-rich oil blend, plus pharmaceutical-grade olive oil and vitamin E (an antioxidant often used to prevent rancidity).

What Is Omega-3?

OmegaXL provides a potent fatty acid blend, including DHA and EPA. According to the brand, while most fish oils only contain two fatty acids, OmegaXL contains upwards of 30.

Omega-3s and omega-6s are the two major categories of unsaturated fatty acids. Omega-3s are found in every cell, especially the brain and eyes, as structural components of the phospholipids that form cell membranes.

They’re also used to make eicosanoids, signaling molecules that work within the immune, endocrine, pulmonary, and cardiovascular systems.

While the best dietary sources of EPA and DHA are fish and seafood, many Western populations don’t eat many of these and therefore a supplement may be beneficial.

OmegaXL claims to be a more potent source of fatty acids than fish oil.

My initial question about OmegaXL as a registered dietitian is about the high number of fatty acids that are supposedly used.

There are only two essential fatty acids – alpha-linolenic acid (ALA, an omega-3 fatty acid) and linoleic acid (an omega-6 fatty acid). The other fats the body needs it can make from these two alone.

While it’s common to get DHA and EPA from supplements, I’m unsure why so many other fatty acids are included in OmegaXL without explanation.

Evaluation of Ingredients

EPA and DHA have an enormous amount of research in support of their benefits.

This includes their potential to support joint health through anti-inflammatory effects by reducing pro-inflammatory mediators and increasing joint lubrication.

There have been many studies supporting omega-3 for the relief of osteoarthritis symptoms.

Some research has even indicated that omega-3s offer a comparable pain-relief effect to ibuprofen or NSAIDs for nonsurgical pain.

The website states there are “30+ years of published research on unique oil complex”, referring to their proprietary extract, but there are no links.

The research I found on green-lipped mussels and joints is discussed below.

Green-Lipped Mussel Extract

In a 2013 animal study, 23 dogs with osteoarthritis were given a green-lipped mussel (GLM) enhanced diet for 60 days, following a 30-day control diet.

Plasma omega-3 fatty acid concentrations were measured, and gait and motor function were evaluated throughout the study.

The authors concluded that the GLM-enhanced diet had a beneficial effect on the dogs’ improved gait and motor function, and likely reduced some baseline symptoms.

And in a similar study, 81 dogs with the mild-to-moderate degenerative joint disease were randomly assigned to receive a placebo or GLM extract for 56 days in addition to a normal diet.

Their owners offered subjective assessments of clinical joint symptoms, while one veterinarian conducted examinations.

At day 56, dogs who received GLM had improved musculoskeletal scores. However, by day 112 the effects of GLM were the same as the placebo group.

This study suggests that GLM may be helpful in reducing arthritic joint pain acutely, but more research around prolonged therapy is needed.

In a 2012 study among humans, researchers investigated how effective high-dose GLM extract was on symptoms of osteoarthritis of the knee.

Over 8 weeks, 21 subjects with knee osteoarthritis took a daily dose of 3,000 mg GLM. Researchers concluded that GLM significantly improved joint pain, stiffness, and mobility.

In another 2013 human trial, researchers found that green-lipped mussel extract was more effective than fish oil in alleviating osteoarthritis-related joint pain over 12 weeks. This included an 89% decrease in pain symptoms and improved quality of life reported among 91%.

Interestingly, another study in 2017 found that fish and krill oils were superior to GLM in terms of protecting dogs against collagen degradation, and were more promising for protecting cartilage.

Overall, the available scientific support for using green-lipped mussel extract for joint relief in humans is limited. More research would be beneficial.

Olive Oil and Vitamin E

The product website FAQ section states that this product also contains pharmaceutical-grade olive oil and vitamin E. 

Overall, research on olive oil for joint pain varies in how it’s applied and the reviews for supplemental olive oil are mixed.

Many studies look at the anti-inflammatory effects of the dietary inclusion and topical use of olive oil.

One 2005 clinical trial found that combining olive oil supplementation with fish oil may offer greater joint pain relief.

Vitamin E has been extensively studied using participants with osteoarthritis. However, most of the available data appears to offer mixed results.

Because solid science behind using these ingredients is lacking, plus the fact that the exact amounts of each included in this product formulation are not shared, it’s difficult to make statements about their potential benefit. 

Verdict on Claimed Benefits

Below is our summary of the available evidence for the claimed benefits of OmegaXL based on the available research:

  • Reduces joint discomfortModerate Evidence
  • Reduces inflammationModerate Evidence

Side Effects, Safety, and Dosage

OmegaXL capsules are to be taken with meals for the first 8 weeks, I assume to minimize potential digestive discomfort often warned with supplements.

OmegaXL contains molluscan shellfish oil and could be problematic for related allergies. It claims to use a proprietary extraction process that removes allergenic proteins.

While concern for vitamin E toxicity from food is extremely low, high doses of supplemental vitamin E could lead to blood thinning that increases the risk for stroke.

It may also interfere with blood-thinning medications, as well as the breast cancer drug tamoxifen and the immunosuppressant drug cyclosporine.

There is no information regarding how much vitamin E this product contains. 

A 2013 trial among humans using green-lipped mussel extract for osteoarthritis concluded that this substance had no side effects for participants.

Otherwise, I've been unable to find any data on potential side effects from this ingredient.

Overall, it’s best to speak to a healthcare provider before using this product, especially if you have an allergy, or are pregnant, breastfeeding, use medications regularly, or have another medical condition.

Cost and Where to Buy

One bottle of OmegaXL contains 60 softgels. With a recommended dose of 4 capsules per day, one bottle lasts two weeks, priced at $39.95 per bottle or nearly $80.00 for one month.

However, on your first purchase, you receive a second product for free.

Additionally, you can sign up for an auto-ship program and receive two 60-count bottles monthly for $69.98 plus $4.95 shipping.

OmegaXL comes with a 60-day money-back guarantee.

You can purchase directly from the brand website or from their Amazon storefront.

However, the best discount is on the brand website as it appears even the Subscribe-and-Save option on Amazon brings you close to $100.00 per month.

Comparison to Alternatives

Most omega-3 supplements use fish, krill, or algae, but there are a few others that use green-lipped mussels.

OmegaXL costs $0.66/capsule, while similar products with the same dosage are $0.04 to $0.40/capsule.

I even found other green-lipped mussel joint products for $0.01/capsule. Oppositely, some mussel supplements are $0.83/capsule, so there’s obviously a wide range.

Related: Best Fish Oil Supplements of 2021, According to Dietitians

The Bottom Line

OmegaXL is positioned as an innovative source of omega-3 from green-lipped mussels for joints.

There’s evidence in support of DHA and EPA to aid inflammation and pain.

However, most research using mussels appears to have been done using dogs or small studies. Research on olive oil and vitamin E for joint pain is mixed. 

I’m confused about why OmegaXL contains so many free fatty acids, what the benefit of including these in the formulation is, and where the research is to support doing so given the cost.

While it’s certainly possible that people could experience joint benefits, I’m wondering what makes it worth the significantly higher investment.

Joint pain could be related to a more serious condition that may require closer medical management.

It’s always best to speak with your doctor if you’re interested in using this product to make sure your pain is properly evaluated and that this intervention is appropriate for you.

A Word from Our RD

As a dietitian, I recommend omega-3 supplements for people who get few dietary sources. As long as you don’t have an allergy, there seems to be low risk.

For people with joint pain, I would advocate for omega-3 with lifestyle, dietary, and medications prescribed by one’s healthcare provider.

However, I also find it important to advocate for a supplement that aligns with one’s budget and has the most evidence.

This product appears to be low-risk but doesn’t provide ingredient amounts, and from what I can tell, the research is mixed as far as their efficacy in alleviating joint pain. 

Was This Article Helpful?YesNo
Thanks for your feedback!
In a few words, please tell us how this article helped you today.
Please let us know how we can improve this article by selecting your concern below.
Thank You! We appreciate your feedback.
* Please select at least one topic:
Please Note: We cannot provide medical advice. This feedback will help us continue improving your user experience on WellnessVerge.
Please Note: We cannot provide medical advice. This feedback will help us continue improving your user experience on WellnessVerge.
Submit Feedback
Submit Feedback

At WellnessVerge, we only use primary references for our articles, including peer reviewed medical journals or well-respected academic institutions.