What Is Fish Oil / Concentrated Omega-3 (TG, Ethyl Ester and Re-esterified TG; EPA+DHA 30-90%)? Applications, Dosage, Alternatives & Specifications

Fish Oil is oil extracted from fatty fish, rich in eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), among other n-3 polyunsaturated fatty acids (omega-3). EPA and DHA are core nutrients for maintaining human cardiovascular health, neurological function, and visual development, often referred to as the “twin stars” of the omega-3 fatty acid family. EPA is known as the “vascular scavenger” due to its ability to reduce blood viscosity and regulate blood lipids, while DHA is called the “brain gold” because of its high concentration in the cerebral cortex and retina, where it plays a critical role in nerve cell growth and maintenance. Fish oil products are available in various forms, including crude fish oil, refined fish oil, concentrated fish oil (ethyl ester EE, triglyceride TG, re-esterified triglyceride rTG), microencapsulated powder, and krill oil. Different purity grades exist in the market today, including low concentration (30%-50%), medium concentration (50%-70%), and high concentration (≥70%). High-purity EPA/DHA fish oil is increasingly used in prescription drugs. Structurally, triglyceride-form fish oil has higher absorption rates than ethyl ester-form, with better bioavailability. High-purity fish oil has become a core beneficiary of the global cardiovascular health consumption upgrade. It is supported by extensive clinical evidence for regulating blood lipids, helping manage the “three highs,” brain health, eye health, anti-inflammation, and neural development, making it an indisputable “evergreen category” in dietary supplements.

EPA and DHA exert multi-dimensional health benefits in the human body:

Numerous clinical studies have confirmed that EPA and DHA significantly reduce triglyceride levels, improve endothelial function, stabilize atherosclerotic plaques, and exhibit anti-arrhythmic properties, effectively reducing cardiovascular event risk. EPA excels in anti-inflammation and reducing blood viscosity, making it a core protector of cardiovascular health, while both work synergistically for comprehensive cardiovascular protection.