Fish oils are always considered as natural medicine.

Don't know exactly what you mean... 'how more fish oil'...

Tick

Fish and plant oils are really only needed in amounts totaling about 1-3 tablespoons a day.
You can just eat fish, nuts, and seeds, and not add the extracted oils to your diet.
You also get more variety of nutrients that way, it's cheaper, and tastes better.

For what? The treatment dose and the preventative dose are different.