Frequently asked questions

Here you'll find all the answers to any questions you may have about our products, from sourcing to medical information.


Here at EQUAZEN, we take great pride in our oils, ensuring that every batch is produced to the highest possible quality, hygiene and legal standards that our customers have come to expect over the years. We maintain the quality of our products by working with suppliers who directly process the oil and who we know do not deal with agents or secondary parties. This means that we are involved at every step of the process and can ensure rigorous quality control.

To ensure that we are in full compliance with the stringent EU legislation relating to quality assurance, food safety and contamination, each batch of fish oil is tested to ensure it is free from environmental contaminants, such as pesticides, dioxin-like PCBs and polycyclic aromatic hydrocarbons (PAHs).

As part of our rigorous testing, all EQUAZEN products are protected against:

  • Oil rancidity:  Oil that is left in open containers easily turns rancid through oxidation and degrades much faster. Our encapsulated products ensure this does not happen. Our liquid products also contain a higher concentration of antioxidant and come in special bottles to provide similar protection.
  • Contamination during transport: When transporting fish oil, it is crucial to protect the oils from oxygen, light and heavy metal as these can adversely affect the quality of the oil. EQUAZEN oils are protected from oxygen as they are stored in special closed containers which are flush with nitrogen gas and safe from light and heavy metal contamination.
  • Degeneration: Antioxidants are typically added to oils to help protect them and ensure sufficient shelf life. EQUAZEN uses tocopherol, more commonly known as vitamin E, at a level within the recommended daily allowance (RDA) and which ensures protection against degeneration.
  • Confirmed in rigorous testing: Notwithstanding the above, every batch of fish oil we produce is tested for compliance with approved specifications on quality and readings on environmental contaminants, including anisidine and peroxide, and then certified. Once released and sold, a thorough adverse event monitoring system is in place.