Fish oil is a source of omega-3 fatty acids that the U.S. National Library of Medicine supports as an effective treatment for high blood pressure. Omega-3 fatty acids can be found in foods such as fish, vegetable oils and nuts, however prescription fish oil supplements offer the highest and most effective concentration of this healing substance. Omapure, AMB Well and Nordic Naturals make fish oil supplements with the highest omega-3 rating from International Fish Oil Standards, or IFOS.
Omapure
Omapure molecularly distilled fish oil is one of the purest omega-3 supplements available without a perscription with a 70 percent concentration of EPA and DHA, which are the two primary ingredients in omega-3. Omapure fish oil is verified by the U.S. Pharmacopeia, the stardards-setting authority for all over-the-counter drugs in the United States, which is the most vigorous quality assurance verification in the world. Omapure pharmaceutical grade has also received 5 stars from the IFOS for purity.
AMB Well
The Omega-3 PGFO supplement from AMB Well is purified using advanced molecular distillation in order to remove PCBs, mercury, dioxins and furans, which are contaminants present in fish oil supplements of lower quality. Omega-3 PGFO comes in at 60 percent concentration of EPA and DHA with the remaining 40 percent of the capsule made up of glycerin, purified water and vitamin E for oxidative stability. AMB Well claims that Omega-3 PGFO maintains cardiovascular health and lowers serum triglyceride levels but more evidence is needed before this is a proven scientific fact. Omega-3 PGFO has received 5 stars from the IFOS.
Nordic Naturals
Ultimate Omega by Nordic Naturals boasts a very high volume of omega-3 per pill, with more than twice as many milligrams of omega-3 as other IFOS 5 star brands. Nordic Naturals claims that Ultimate Omega supports cardiovascular health, respiratory function, joint flexibility and mobility as well as the body's anti-inflammatory response. However more evidence is necessary before these claims are scientific fact. Ultimate Omega comes in lemon-flavored soft gels, notes the company website.



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