Thorne Pro-Resolving Mediators Review

Thorne Pro-Resolving Mediators is a omega-3 gelcap supplement that the company describes as a blend of pro-resolving mediators together with the omega-3 fatty acids EPA and DHA. The product is built on the idea that pro-resolving mediators are the end products of the body's metabolism of EPA and DHA. According to the page, Thorne's formula includes the precursors the body needs to create these mediators, namely two pre-resolving mediators, 17-HDHA and 14-HDHA, derived from DHA, and one pre-resolving mediator, 18-HEPE, derived from EPA. The formula also includes EPA and DHA themselves, which the page describes as their parents. The stated purpose is to support a balanced inflammatory response, helping the body return to homeostasis after an injury or other insult. The page explains that groups of these mediators produced in the body are called resolvins and protectins, which it compares to the body's cleanup crew. The listed benefits include support for healthy brain structure and cognitive function, help in maintaining a balanced immune and inflammatory response throughout the body, promotion of clearance of cellular debris such as dead cells and byproducts of the inflammatory process, and support for exercise recovery. The page lists two features: the product includes EPA and DHA in addition to three pre-resolving mediators, and it contains an omega-3 blend that the page claims has the highest concentration of pre-resolving mediators on the market. The product is sold as sixty gelcaps, with one gelcap as a serving. Each serving provides an omega-3 fatty acids EPA and DHA blend of 500 milligrams, DHA of 250 milligrams, EPA of 160 milligrams, and a marine lipid concentrate from fish oil of 650 milligrams. The other ingredients are bovine gelatin, vegetable glycerin, purified water for the gelcap, mixed tocopherols, and highly refined concentrated marine oil. The page states that the product has been third-party tested and certified to verify that its contents match the label and that it contains no unsafe levels of contaminants such as heavy metals, pesticides, and microorganisms. The allergy warning says the product is contraindicated for anyone with a history of hypersensitivity to its ingredients, and that the omega-3 fatty acids are derived from fish and or shellfish. Pregnant users are advised to consult a health-care practitioner before use. The page states that there are no known adverse interactions or contraindications at the publication date. The page also offers a subscription option with discounts and an HSA or FSA eligibility note.

Product Focus: Joints and MobilityAlso covers:Immune system
Tier ⓘ
Tier 4 · Rank 1
Tier 4 · Emerging. A promising mechanism or animal data, with thin human evidence so far. Rank 1 within Tier 4 for Joints and Mobility; 46 of 62 overall. Tiers run from 1, the strongest evidence, to 5. How we grade →
Evidence ⓘ
53 /100
How strongly the evidence says this product works: human studies count most, then real reviews, then our biohacker panel.
Positive Reviews
86% of 145
Biohacker Mentions
7 of 10
Cost per month
$38

Study, Trial or Testing Result Summary

Members Only2 human studies · 2 improved

1 of these 2 human studies gave glycerin by injection, not by mouth.

2 human studies2 improved79 people studied

This product's main ingredient is a fish oil concentrate rich in omega-3 fats, but no studies of those fats for joint health were given here. The only studies provided are for glycerin, which is a capsule-making ingredient, and its amount is not listed separately. Neither study tested glycerin alone. In one controlled trial of 79 adults with long-lasting low back pain, six weekly injections of a dextrose, glycerine and phenol solution into the back ligaments and joint capsules led 30 of 39 people to have at least half as much pain or disability at 6 months, compared with 21 of 40 people given a numbing agent and salt water [1]. In a double-blind trial in people with knee arthritis, an 8-week curcumin gel that used glycerin as one ingredient cut pain by about 72 percent versus 7 percent with placebo, and also reduced stiffness and difficulty with daily movement [2]. Both results most likely come from the other ingredients, and these were injections and a skin gel, not a swallowed capsule. So the studies given do not show that this product helps joints. Animal and cell studies are never counted.

See all 2 studies →Hide the studies

Review Totals and Summary

Members Only145 reviews · 86% positive
145 reviews · Vitacost 69 · Amazon 56 · Thorne 20
86% positive10% neutral4% negative

Across the two stores the product shows 145 ratings (20 on Thorne and 69 on Vitacost), and the themes below come from the written reviews that could be read on their pages, which were a handful per store. All of the feedback concerns the softgels, and no other forms of the product turned up to be left out. The most common praise is for recovery and relief from inflammation. One Thorne reviewer describes improved recovery and decreased inflammation and says they will recommend the product to patients. Another had a sprained ankle that was still swollen, saw the swelling almost gone within a week, and says they are back to running because of it. On Vitacost, several reviewers report gradual benefits for joint pain, muscle discomfort and inflammation. One says the gelcaps helped with histamine-related issues and rebalanced the nervous system, but stresses that the product has to be taken consistently before a gradual difference appears. Another noticed results within two weeks, with joint pain gone and inflammation down by an estimated 70 percent, while also eating a gluten-free, grain-free, healthy diet. A third compares it favourably with Metagenics for chronic muscle and joint pain and felt better after only a few days. Speed of perceived results is a recurring thread, as is the sense that the product works on the underlying resolution process rather than masking symptoms. Tolerability and form are praised where mentioned. One Thorne buyer reports no aftertaste and no stomach upset. Another calls the gel capsules high quality, not fishy, and free of any ill effects they have noticed. They also like that it is a single capsule, which makes it easy to add to a daily vitamin routine without taking many pills, and say they combine it with CoQ10. One further Thorne review, titled "A+++", simply calls the product outstanding with no detail. Trust in the Thorne brand and in the science also comes through. One longer Vitacost review reads like a promotional essay. It explains pro-resolving mediators as end products of EPA and DHA metabolism, argues that many people lack the enzymes to convert standard omega-3s, and calls the gelcaps pure, stable and well tested. Another Vitacost reviewer says a physician recommended the product after a post-viral illness and cited research on biofilms and inflammation, though they give no detail on their own results. On the downside, there are no clear complaints in the readable reviews. The one cost-related remark is the promotional review's acknowledgement that these mediators are expensive. No reviewer mentions pill size, bad taste, or a lack of effect, and Vitacost reviewers do not discuss side effects, taste or gelcap size. Thorne's 4.8 average from 20 ratings (seventeen five-star, three four-star) fits the positive written comments. The product seems to suit people dealing with joint or muscle pain, lingering inflammation, or recovery from injury or exercise, and those who want a single capsule that is easy to fit into a supplement routine. Consistent, ongoing use appears to matter. One caveat is that the Vitacost written reviews are all attributed to iHerb and share the same posting date, so they appear to have been imported from another retailer rather than written on the Vitacost listing.

Biohacker Summary

Members Only7 of 10 recommend it
7 of 10 biohackers on our panel recommend it

Three of the ten panelists spoke about glycerin, the main ingredient here, and none of them recommends taking it as a supplement; their comments are about toothpaste, sweeteners and vaping. Two of them warn about it: one says it coats teeth and blocks minerals from getting back into enamel, and the other has said the same about dental products, adding that the coating can last all day and make teeth more prone to cavities. The first of these two later changed his view and now uses glycerin in his toothpaste, saying it dissolves easily in water, does not stop enamel from rebuilding, and acts as a preservative and binder. He also warned in the past that heating vegetable glycerin in vape pens to very high temperatures makes a lung irritant. The third panelist is neutral, describing glycerin as a sweet sugar alcohol used as a sweetener that scores zero on the glycemic index, and no one gave a dose, a preferred form, or something to pair it with.

See all 3 biohackers →Hide the biohackers
  • Ben Greenfield · Glycerin · uses
    • 4 Jan 2025 · uses · YouTube ↗
      Uses glycerin in his toothpaste, clarifying that it is highly water-soluble and does not impede remineralization, but rather provides preservation, texture, acts as a binder, and is bacteriostatic.
    • 15 Mar 2018 · warns · YouTube ↗
      Warns that heating vegetable glycerin in vape pens to over 500 degrees Fahrenheit produces acrolein, a respiratory irritant and carcinogen.
    • Date not recorded · warns · Website ↗
      Recommends avoiding glycerin as it coats the teeth and blocks saliva from re-mineralizing enamel.
  • Dr. Eric Berg · Glycerin · neutral
    • 26 Nov 2023 · neutral · YouTube ↗
      Mentions glycerin as a sweet sugar alcohol that is apparently zero on the glycemic index and is used as a sweetener.
  • Dave Asprey · Glycerin · warns
    • 12 Mar 2021 · warns · YouTube ↗
      Warns that glycerin in dental products puts a coating on teeth, preventing minerals from getting back in, leading to demineralization and making teeth more prone to cavities.
    • 9 Dec 2020 · warns · YouTube ↗
      Warns that glycerin in dental products puts a coating on teeth, preventing minerals from getting back into them, which can lead to demineralization and increased sensitivity.
    • 3 Nov 2020 · warns · YouTube ↗
      Warns that glycerin in dental products puts a coating on teeth, preventing minerals from getting back in and making teeth less strong and more prone to cavities. It can last all day, hindering remineralization.

RAL Summary

Members OnlyTier 4 for Joints and Mobility

The study support rests on glycerin, a capsule filler, instead of the product's main ingredient (fish oil omega-3 fats), and no studies of the omega-3 content were given, so the study support is thin. So it is graded Tier 4, lower than the rules alone gave.

  • Emerging: not enough evidence to rank higher yet.
  • Glycerin: amount hidden in a blend

More Details

Members OnlyBody systems · Combine with · Possible side effects

Body systems: Musculoskeletal system, Immune system

Combine with: For inflammation resolution and joint support, pair it with curcumin (phytosome or piperine-enhanced), which helps modulate inflammatory pathways, and with vitamin D3 and K2 for immune and bone support. Collagen peptides, glucosamine and chondroitin, or boswellia can add complementary joint support. If cardiovascular and cholesterol support is also a goal, add a separate lipid-focused regimen such as plant sterols, bergamot extract, soluble fiber like psyllium, or red yeast rice, and discuss these with a clinician, especially if you take meds. A full-dose omega-3 product could also be considered for triglyceride management. Taking the product with a fat-containing meal improves absorption.

Possible side effects: No major side effects reported.

Supplement Facts

Marine Lipid Concentrate 650 mg · Total Omega-3 Fatty Acids 500 mg
Supplement Facts
Serving Size 1 Gelcap(s)
Servings Per Container 60
Amount Per Serving% Daily Value
Calories10
Total Fat1 g
Cholesterol5 mg
Marine Lipid Concentrate650 mg†
Total Omega-3 Fatty Acids500 mg†
† Daily Value not established.

Other ingredients: Highly Refined Concentrated Marine Oil, Bovine Gelatin, Glycerin, Water, Purified, Mixed Tocopherols.

Directions: Suggested Use: Take 1 gelcap daily or as recommended by your health-care practitioner.

Barcode (UPC) 693749013358 · Label source: NIH label database · Report a label change

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Graded November 6, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.