Taking cod liver oil will not affect urination. Uneasy urination may be associated with drinking too little water, excessive water loss and urinary tract disorders. Cod liver oil is a vitamin drug that consists mainly of vitamin A and vitamin D. It is used to treat vitamin A deficiency. There are no adverse effects if the medication is taken routinely and in doses. Excessive water loss due to drinking too little water and excessive exercise and crying can lead to decreased urine production, making it difficult to urinate. Urinary system diseases such as urethral stones and bladder stones can also lead to difficulty in urination. It is recommended to drink more water to eliminate the physiological factors such as low water intake and excessive loss of water that lead to difficulty in urination. If it is not easy to urinate for a long time, it is recommended to go to the hospital in time and follow the doctor’s instructions for treatment.