Thyroxine tablets: Adjust dose if you eat milk, cheese and hidden soy. The effect of the thyroid hormone thyroxine is reduced by dairy products such as cheese and yogurt.
Soy-based diets, i.e. soy milk, muesli with soy flakes, pizza with soy flour or similar, can impair the absorption of thyroid hormone from the intestine. Minerals such as zinc, magnesium and iron also influence the Thyroxine level. It can take several weeks until a patient is adjusted to the appropriate dose of levothyroxine (L-thyroxine)