Naturalis Ultra rTG Omega 3 Fish Oil 1800mg 180 Softgels | IFOS Certified

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Price: $48.95
(as of Nov 02, 2026 15:50:26 UTC – Details)

Product description

What does “rTG” fish oil mean?

“rTG” stands for re-esterified triglyceride. This is a highly refined form of fish oil where omega-3 fatty acids are converted back into their natural triglyceride structure after purification. Known for better absorption and higher bioavailability.*

Why is your fish oil dark in color?

Naturalis rTG fish oil has a dark red color because it contains astaxanthin. The inclusion of astaxanthin may also give the oil a mild ‘seaweed-like’ scent, as it is derived from natural microalgae.

Is your fish oil third-party tested?

Yes, all Naturalis fish oil products undergo third-party testing for purity, stability, and safety. This rTG fish oil is certified by IFOS, ensuring it meets strict global quality standards.

What is the purpose of adding astaxanthin and vitamin E to your fish oil?

Astaxanthin and vitamin E are added as antioxidants. They mainly aim to help the fish oil preserve freshness and potency. They also provide some extra benefits with their antioxidant nature.

Is the astaxanthin in your fish oil natural or synthetic?

The astaxanthin used is 100% naturally sourced from microalgae. It is cultivated in a closed tubular system, which prevents contamination from open seawater.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Package Dimensions ‏ : ‎ 5.28 x 2.8 x 2.64 inches; 8 ounces
Item model number ‏ : ‎ FO18018
Date First Available ‏ : ‎ April 20, 2021
Manufacturer ‏ : ‎ Naturalis
ASIN ‏ : ‎ B0D464H1GW
Best Sellers Rank: #42,631 in Health & Household (See Top 100 in Health & Household) #105 in Fish Oil Nutritional Supplements
Customer Reviews: 4.7 4.7 out of 5 stars (208) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
WHY OMEGA-3 + ASTAXANTHIN: Naturalis combines high-potency, full spectrum re-formed Omega-3 (EPA, DHA & DPA) and astaxanthin for cardiovascular health, healthy aging, and, antioxidant support.*
HIGH ABSORPTION rTG OMEGA-3 FORM: re-formed triglyceride is the most absorbable form of omega-3, raising omega-3 levels in cells 3.5x higher than standard triglyceride*
FRESHER FOR LONGER: added with nature’s strongest anti-oxidant Astaxanthin and Vitamin E to ensure extra protection against oxidation.
SUSTAINABLY SOURCED: Single-sourced from only Wild New Zealand Tuna. Our re-formed Omega-3 fish oil 1800mg is certified sustainable and traceable by the Marine Stewardship Council (MSC) and IFOS 5-star rated.
QUALITY & SAFETY: Naturalis Omega 3 Fish oil softgels are pescatarian friendly, non-GMO, hexane, and gluten-free. Manufactured in the Calfornia, USA in a cGMP-compliant facility and third-party tested for heavy metals.
Customers find the fish oil supplement to be of superior quality and appreciate its health benefits, with one customer noting it helps with dry eyes. The supplement has no aftertaste, and while some customers report no adverse reactions, others mention it can cause nausea and burping.