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.

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

Product ID: 641675681

Details

Age Range (Description)
Adult
Brand
Naturalis
Diet Type
Gluten Free
Flavor
Unflavored
Item Form
Softgel
Item Weight
8 ounces

🌿Wild NZ Tuna, sustainably sourced

🐟1800mg pure rTG Omega-3

🛡️IFOS 5-star purity & safety

$102.97

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Description

🐠 Elevate your wellness game with the pure power of wild Omega-3!

SUSTAINABLY WILD CAUGHT - Sourced exclusively from wild New Zealand tuna, certified by MSC & IFOS for traceability and eco-conscious purity.
CLEAN PESCATARIAN NON GMO - Gluten-free, hexane-free, and crafted in a cGMP facility in California for uncompromising quality and safety.
ULTRA ABSORBABLE R TG OMEGA 3 - Boost your cellular omega-3 levels 3.5x more than standard oils for peak brain & heart performance.
ASTAXANTHIN POWERED FRESHNESS - Nature’s strongest antioxidant plus Vitamin E keep your fish oil fresher, longer—no oxidation, no compromise.
COMPREHENSIVE CARDIOVASCULAR COGNITIVE SUPPORT - Formulated to support heart health, cholesterol balance, brain function, and healthy aging with full-spectrum Omega-3s.

Naturalis Ultra rTG Omega 3 Fish Oil delivers a potent 1800mg dose of re-formed triglyceride Omega-3s (EPA, DHA, DPA) sourced sustainably from wild New Zealand tuna. Enhanced with astaxanthin and Vitamin E for superior antioxidant protection and freshness, this IFOS 5-star certified supplement supports cardiovascular health, brain function, and healthy aging. Non-GMO, gluten-free, and manufactured under strict quality controls, it’s the premium choice for professionals seeking clean, effective Omega-3 nutrition.

Specifications

ASIN	B0D464H1GW
ASIN	B0D464H1GW
Age Range Description	Adult
Allergen Information	Non-GMO
Best Sellers Rank	#42,472 in Health & Household ( See Top 100 in Health & Household ) #100 in Fish Oil Nutritional Supplements
Brand Name	Naturalis
Container Type	Bottle
Customer Reviews	4.6 4.6 out of 5 stars (193)
Date First Available	April 20, 2021
Diet Type	Gluten Free
Dosage Form	Softgel
Dose Release Method	Immediate Release
Flavor	Unflavored
Item Form	Softgel
Item Highlight	Sourced from wild New Zealand tuna and enhanced with Astaxanthin for its distinctive natural dark red color.*
Item Weight	8 ounces
Item model number	FO18018
Manufacturer	Naturalis
Manufacturer	Naturalis
Manufacturer Part Number	850027547688
Material Features	Fragrance Free, GMO Free, Gluten Free, Sustainably Sourced
Model Number	FO18018
Number of Items	1
Package Dimensions	5.28 x 2.8 x 2.64 inches; 8 ounces
Primary Supplement Type	Omega-3 Fatty Acids, astaxanthin, fish oil, rTG omega 3
Product Benefits	Blood Pressure Management, Brain Health Support, Cholesterol Management, Heart Health Support
Special Ingredients	Astaxanthin, DPA, Docosahexaenoic acid, Eicosapentaenoic acid, rTG Fish Oil
UPC	850027547688
Unit Count	180 Count

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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$102.97

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

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TrustScore 4.5 | 7,300+ reviews

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