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 also contains vitamin A, which can be harmful in large doses, particularly to pregnant women. The daily maximum dose of vitamin D is 50 micrograms and for vitamin A is 3 mg. The recommended daily intake of these vitamins is about a fifth of these values.