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.
For most people, these side effects are merely bothersome. However, cod liver oil can sometimes cause serious side effects as well, especially when taken at higher dosages, which is often necessary in order to obtain the benefits of cod liver oil.