Is Krill Oil Better Than Fish Oil?

It is often hard to compare two products without a frame of reference by which to compare them.

Whether krill oil is better than fish oil really depends on what you are using or needing the krill oil or fish oil for and your particular circumstances.

So let’s take a look at some specific conditions and circumstances where we can compare these two oils in a sensible manner.

Is Krill Oil Better Than Fish Oil As A Source Of Omega 3?

The short answer is yes.

Krill oil contains higher quantities of EPA and DHA than fish oil which means you get more omega 3 fatty acids for your money. As an added benefit, Krill oil also contains two extra antioxidants which have other health benefits to offer, over and above the omega 3 fatty acids.

However, you should not just use the source of the omega 3 supplement to determine if it is a safe supplement to take. A high quality omega 3 supplement requires other factors as well.

This includes the process in which the oils are extracted from the source fish. The best method that produces a high quality omega 3 supplement is a process called molecular distillation. It is a process by which the oil in the fish is extracted at the molecular level to ensure that contaminants are not extracted.

Companies who produce high quality fish oils also usually have a 3rd party lab test their products for heavy metal contamination and especially mercury contamination.

It’s always prudent to check if the company you are buying your omega 3 supplements from has these certificates, whether they source their oils from krill or salmon.

Is Krill Better Than Fish As A Source Of Omega 3 Supplements?

Krill oil is produced from Krill – a small shellfish caught in the Antarctic.

The numbers of krill are declining at an alarming rate and the species faces possible extinction if we increase our harvest of krill. Species that could be threatened by increased krill harvests include whales, penguins and seals.

Fish oil may be harvested from any oily fish. So fish oil may pose the same problem depending on their source but there are also good sustainable sources of fish oil which we can safely harvest from the oceans without disturbing the ecological balance.

New Zealand Is A Very Good Source For Contaminate-Free Fish Species

So the answer to the above question is yes and no depending on the source of the fish oil. If the source of is the Tuna and Salmon from New Zealand though, then the answer is no – Krill oil is not better than fish oil as a source of omega 3.

Is Krill Oil Safer Than Fish Oil When Taken As A Supplement?

Again the answer must be no. Although krill oil is one of the highest sources of omega 3 and it contains the extra antioxidants, it has not been tested for safety for long term use.

Most omega 3 studies have been based on fish oil and because of the added ingredients in krill oil and the source of krill oil, the FDA has warnings with regards to its long term use.

There are also possible known side effects and drug interactions which may occur when taking krill oil, which are not listed as possible side effects for fish oil.

Fish oil on the other hand may be safer than krill oil but one cannot assume all fish is safe to take either. Always ask the company you are buying the omega 3 supplements for certificates of testing to ensure the products are contaminate free.


Fish oil is safer, more sustainable supplement than Krill oil but to ensure the fish oil you are taking is safe, its best to ensure you get the freshest, most unpolluted form of fish oil available on the market.

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