Taking methylcobalamin tablets does not generally have a major effect on having iodine 131.
Methylcobalamin is a kind of endogenous coenzyme B12, which can play a role in promoting the metabolism of nucleic acid, the utilization of folic acid, as well as the transport function of axon, axon regeneration, etc. It can be used for the treatment of vitamin B12 deficiency caused by megaloblastic anemia and peripheral neuropathy and other diseases.
Iodine 131 is a treatment for hyperthyroidism that destroys thyroid tissue and inhibits the synthesis of thyroid hormones. Since methylcobalamin generally does not have a major effect on doing iodine 131, patients who are taking methylcobalamin can also have an iodine 131 test.
However, methylcobalamin tablets also have some adverse drug reactions, the main adverse reactions include generalized rash, loss of appetite, nausea, vomiting, diarrhea and so on, the incidence is low, usually not more than 0.1%. If the drug is discontinued, the symptoms may be gradually relieved and no special treatment is needed.
Patients who need to take methylcobalamin treatment or undergo iodine 131 treatment should be under the guidance of a doctor.