cod liver oil side effects
Cod Liver Oil Safety and Side Effects. Cod liver oil is safe for most people. It can cause side effects including belching, bad breath, heartburn, and nosebleeds. Taking cod liver oil with meals can often decrease these side effects. High doses might keep blood from clotting and can increase the chance of bleeding. Vitamin A and vitamin D levels might also become too high with high doses of cod liver oil. High doses might also cause nausea and loose stools.
Some side effects with cod liver oil should be reported to your healthcare provider, as they may indicate that you should stop taking it. These include but are not limited to: 1  Any unusual bruising or bleeding (cod liver oil can increase the risk of bleeding) 2  Signs of gastrointestinal bleeding, such as:  Black, tarry stools.
Because cod liver oil contains quite a bit of vitamins D and A, it is also possible that side effects can occur due to toxicities from either of these vitamins. There is some concern that long-term use of cod liver oil could increase the risk of skin cancer.