On average, it takes about one hour for your body to break down one unit of alcohol. However, this can vary, depending on: 1  your weight. 2  whether you're male or female. 3  your age.  how quickly or slowly your body turns food into energy (your metabolism)
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.
Fish oil side effects: the problem with vitamin A. Make sure that you don't mistake the dosage of fish liver oil (e.g cod liver oil) for that of omega 3, because it's very possible for you to overdose on vitamin A or D if you take the quantities advised for fish oil.