[adrian_b]

If you buy bottled oil instead of capsules, you can feel its taste, so you can sense whether it is rancid or it has any other suspect taste.

Good omega-3 oil has a pleasant taste, there is really no need to eat capsules made from chemically-modified cellulose or who knows what other material that is not suitable as food.

The omega-3 oil can be mixed with whatever oil you add to your food, e.g. to a salad.

[storus]

Yeah, I mean if I open a capsule, I can tell. But without opening it, is there any way to tell it's rancid?

[adrian_b]

Like I have said, you can buy omega-3 oil as liquid in bottles, even if it may be harder to find than in capsules (but with online shopping it is very easy to find many kinds of such oil).

The pure oil is cheaper and you can feel its taste without having to break capsules. Moreover you do not have to ingest capsules made of dubious substances, besides the desired oil.

Once opened (but preferably also before) such an oil bottle should be kept in a refrigerator.

Some bottled oil includes flavors, e.g. lemon, which mask its natural taste. Unflavored omega 3 oil is preferable.

[storus]

I had a look but all of the oil bottles I could find in my area were flavored with tart/sour taste to mask rancidity, so no thanks.

[sunnybeetroot]

I had the same problem, if you do find one please share

[smilliken]

The best way is to open a capsule for each batch you receive to test it by taste, then store in the fridge.

[motoboi]

Does normal (not rancid) omega-3 oil smells like fish? Or is that an indicator of rancid?