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 is unsafe to take during pregnancy to relieve constipation, as it can hinder the absorption of specific vitamins and minerals. (2004). Common questions and concerns during pregnancy in Harms, Roger W. (Ed.), Mayo Clinic Guide to a Healthy Pregnancy (434-66).