Cod liver oil is not helpful for the recovery of tuberculosis. Cod liver oil belongs to vitamin drugs, cod liver oil is mainly used to treat rickets, night blindness, pediatric tetany, vitamin AD deficiency, and is not helpful for the recovery of tuberculosis. Tuberculosis requires regular treatment, and its treatment is commonly used anti-tuberculosis chemical drugs, such as isoniazid, rifampicin, streptomycin, pyrazinamide, ethambutol and so on. Surgery is required in cases of ineffective chemotherapy, large caseous foci, and multi-drug resistant thick-walled cavities. The use of cod liver oil is prohibited in patients who are allergic to cod liver oil, suffer from chronic renal failure, hypercalcemia, hyperphosphatemia with renal rickets. Cod liver oil should not be taken for a long time or overdose, so as to avoid adverse reactions such as bone and joint swelling, skin pain and itching, dry and cracked lips, fever, headache, vomiting, constipation, diarrhea and so on. Tuberculosis should go to the hospital in time, actively cooperate with the doctor for treatment, if you need to use cod liver oil, you should consult a professional doctor, in order to avoid adverse effects.