Is biotin safe for underactive thyroid?
Most commonly, biotin use can result in falsely high levels of T4 and T3 and falsely low levels of TSH, leading to either a wrong diagnosis of hyperthyroidism or that the thyroid hormone dose is too high..
Does biotin interact with thyroid medication?
Biotin doesn’t interfere with your thyroid medication, but it does interfere with your thyroid blood test and can mess up your numbers. Stop taking biotin at least 2 days before having a TSH blood test done.
What supplements affect the thyroid?
According to the Mayo Clinic, supplements such as calcium, iron, multivitamins containing iron, and antacids containing magnesium or aluminum can potentially have interactions with thyroid medications. They should be taken several hours before or after your thyroid medication to avoid an interaction.
What are the side effects of too much biotin?
Biotin supplements can cause problems if you ingest too much. Side effects can include skin rashes, digestive upset, problems with insulin release, and kidney problems.
What vitamins should not be taken with thyroid medication?
Yes. Calcium supplements — or antacids containing calcium — can interfere with the absorption of thyroid hormone replacement medications, such as synthetic thyroid hormones levothyroxine (Synthroid, Unithroid, others) and liothyronine (Cytomel), as well as thyroid extract supplements.