What should not be eaten for breakfast after taking Euthyrox

Jul 11, 2025 Source: Cainiu Health
Dr. Shen Yonghua
Introduction
Milk contains a high amount of calcium, which can combine with medications to form complexes that are difficult to absorb, reducing the bioavailability of levothyroxine sodium tablets and affecting drug efficacy. There should be at least a one-hour interval between consuming milk and the medication. Soy milk, rich in plant protein and calcium, can interfere with intestinal absorption of the medication when taken together, leading to insufficient drug concentration in the blood and ineffective regulation of thyroid function.

  Euthyrox is also known as levothyroxine sodium tablets. After taking levothyroxine sodium tablets, it is generally not advisable to consume milk, soy milk, eggs, kelp, walnuts, etc., for breakfast. Detailed explanations are as follows:

  1. Milk: Milk contains a high amount of calcium, which can combine with the medication to form poorly absorbed complexes, reducing the bioavailability of levothyroxine sodium tablets and affecting the drug's effectiveness. There should be at least a one-hour interval between taking the medication and consuming milk.

  2. Soy Milk: Soy milk is rich in plant protein and calcium. Taking it together with the medication may interfere with intestinal absorption of the drug, leading to insufficient drug concentration in the blood and ineffective regulation of thyroid function. These should be consumed separately.

  3. Eggs: Egg yolks contain high levels of cholesterol and protein, which may delay the absorption of the medication in the intestines, prolonging the onset time or weakening the drug's effect. It is recommended to separate the consumption time of eggs from breakfast.

  4. Kelp: Kelp contains a large amount of iodine. Levothyroxine sodium tablets are used to regulate thyroid function, and excessive iodine intake at this time can affect the drug's regulation of thyroid hormone levels, which is detrimental to disease stability.

  5. Walnuts: Walnuts are rich in oils and dietary fiber, which may affect the intestinal absorption efficiency of the medication, preventing the drug from exerting its full effect. There should be a time interval after taking the medication before consuming walnuts.

  When taking levothyroxine sodium tablets, attention should be paid to the interval between breakfast and medication timing. Generally, it is recommended to wait 30-60 minutes after taking the medication before eating. If unsure whether a certain food is suitable, consult a doctor or pharmacist, and regularly recheck thyroid function to ensure the effectiveness of the medication.