Tacrolimus capsules, for example, have side effects such as infections, abnormal renal function, etc. They are contraindicated for those who are allergic to macrolides and women during pregnancy. There are differences in the side effects and contraindications of tacrolimus in different dosage forms, for example, tacrolimus capsule, which is mainly used clinically for the prevention of rejection after kidney or liver transplantation. Adverse effects of this product include abnormal renal function, infection (pneumonia, abscess), abnormal glucose metabolism, headache, insomnia, etc. It is contraindicated for those who are allergic to this product and other macrolides, and pregnant women. Please select the appropriate dosage form according to the patient’s condition under the guidance of physician. Please inform your physician promptly if any significant discomfort occurs after using the drug.