How long does fish oil last? Is fish oil bad for you?

If you like dietary supplements you already know that fish oil is real! The oil has gained cult popularity due to its many health benefits.

The main driver of fish oil is omega-3 fatty acids, which are important for our health. There are two types of fats – good and bad.

and as you can guess Omega-3 fatty acids belong to the first category.

Fish oil is important because our bodies don’t naturally produce omega-3 fatty acids, so we rely on external supplements to give us that extra boost.

Fish oil, as the name suggests, is oil extracted from the tissues of fish. You can find it in abundance in oily fish such as mackerel, anchovy and tuna.

However, like any other food product, You should be aware of the shelf life of these products.

So how long does fish oil last? Should you be worried about bad fish oil?

Let’s find out.

How long does fish oil last? Is fish oil really that bad?

Yes, fish oil can have negative effects. It can cause serious health problems.

Fish oil is one of those things that goes off very quickly. The reason for this is that it contains high amounts of omega-3 polyunsaturated fatty acids. which is very sensitive to oxidation

There are many reactive double bonds. This means they are extremely volatile. As a result, when exposed to oxygen they decompose more easily.

How quickly it breaks down depends on several factors, such as how the fish oil is processed or how it is stored. The latter plays a very important role.

Recent studies have shown that expired fish oil can increase the levels of bad cholesterol in your body.

Fortunately, you don’t have to take that risk. The typical shelf life of fish oil is usually 1-2 years after the production date, however, this is only a maximum estimate.

In fact, fish oil can go bad before its expiration date. It depends on how you store it.

For example, an unopened bottle can last up to 18 months, while an opened bottle, on the other hand, can last anywhere from 3 to 8 months, depending on whether you refrigerate it or not.

How can I tell if fish oil is bad?

Ranjit fish oil is something you don’t want to mess with. Always check the degree of freshness before eating. As you already know, expired fish oil can affect your health.

So if you want to avoid unnecessary health problems. Watch out for these symptoms:

Does it smell weird?

The smell is the first thing you should notice when fish oil expires. They have a distinct fishy smell when fresh. However, this may change over time.

upon oxidation Fish oil creates a by-product called lipid peroxide. It smells bad and makes it less effective.

Doesn’t it seem right?

For those who don’t know Fresh Fish Oil capsules are light gold translucent. It also has a solid bounce. It means you can’t tighten it all the way.

However, this can change when the fish oil goes bad. As a result of oxidation, it can darken and lose its elastic appearance. instead, it becomes soft.

Either way, it’s best to stop using it. Both are good signs of expired fish oil.

Does it taste bad?

Try taking the capsule with a glass of water. Does it leave an aftertaste? If the answer is yes, you should throw it away.

Plain (fresh) fish oil has no flavor, so having a strong flavor is something else.


Fish oil has many health benefits. The only problem is that it’s not old yet.

due to unstable chemical composition As a result, expired fish oil can also be indicative of your health.

Therefore, we recommend that you avoid taking fish oil supplements that may be expired. Of course, you can always do this by watching for some obvious signs.

However, if you want to ensure the best possible protection our best advice is to store properly and avoid oxidation.

The best way to achieve this is to store it in an airtight container.Also store it in a cool, dry place away from direct sunlight. Because heat increases the rate of oxidation.

preparation time 15 minutes

cooking time 15 minutes

total time 30 minutes

what’s needed

  • fish oil
  • Airtight container or ziplock bag
  • Labels and badges


  1. Read the full guide to see how long it will take.
  2. check the “buy before” date to see when it expires
  3. Be sure to store in an airtight container in a cool, dark place. (fridge or cupboard)
  4. Always check for signs of spoilage before use.

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