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.
Cod liver oil contains vitamin D. However, the Vitamin D Council recommends against taking cod liver oil because of the high amount of vitamin A there is in cod liver oil compared to vitamin D. Vitamin A is also a fat-soluble vitamin, so your body has a hard time getting rid of it and too much vitamin A can be harmful.