Does Thyroid Medication Break Intermittent Fasting?

Are you one of the millions of people who practice intermittent fasting? If so, you may be wondering if taking thyroid medication will break your fast. It’s a common question that arises, and we’re here to provide you with the answers you need to make an informed decision about your health and wellness.

Thyroid medication is an essential treatment for those with thyroid conditions, but does it interfere with the benefits of intermittent fasting? In this article, we will explore the relationship between thyroid medication and intermittent fasting, and provide you with the information you need to make the best choice for your health goals. So, let’s dive in!

Thyroid medication does not break intermittent fasting. However, it is recommended to take thyroid medication on an empty stomach and wait at least 30 minutes before consuming any food or drinks. This can be challenging for those following intermittent fasting, but it is important to prioritize medication adherence. Consult with a healthcare provider for personalized guidance.

Does Thyroid Medication Break Intermittent Fasting?

Does Thyroid Medication Break Intermittent Fasting?

Intermittent fasting has become increasingly popular in recent years as a way to promote weight loss, improve metabolic health, and even boost brain function. However, many people who take thyroid medication may be wondering whether their medication will break their fast. In this article, we will explore the effects of thyroid medication on intermittent fasting.

What is Intermittent Fasting?

Intermittent fasting is a dietary approach that involves alternating periods of fasting and eating. There are several different methods of intermittent fasting, but the most common involves fasting for 16 to 24 hours at a time and then eating during a designated window of time. The idea behind intermittent fasting is that it allows the body to burn fat for energy during the fasting period, leading to weight loss and other health benefits.

The Different Types of Intermittent Fasting

There are several different methods of intermittent fasting, including:


  • 16/8 method: This involves fasting for 16 hours and eating during an 8-hour window of time

  • 5:2 method: This involves eating normally for 5 days of the week and then restricting calorie intake to 500-600 calories for 2 days

  • 24-hour fasts: This involves fasting for 24 hours once or twice a week

Benefits of Intermittent Fasting

Intermittent fasting has been shown to have several health benefits, including:


  • Promoting weight loss

  • Reducing inflammation

  • Improving metabolic health

  • Reducing the risk of chronic diseases

  • Boosting brain function

What is Thyroid Medication?

Thyroid medication is a type of medication that is used to treat thyroid disorders, such as hypothyroidism. Hypothyroidism is a condition in which the thyroid gland does not produce enough thyroid hormone, leading to symptoms such as fatigue, weight gain, and depression. Thyroid medication works by replacing the missing thyroid hormone in the body.

The Different Types of Thyroid Medication

There are several different types of thyroid medication, including:


  • Levothyroxine (Synthroid)

  • Liothyronine (Cytomel)

  • Desiccated thyroid extract (Armour Thyroid)

Does Thyroid Medication Break Intermittent Fasting?

The short answer is no, thyroid medication does not break intermittent fasting. Thyroid medication does not contain any calories, so it will not disrupt the fasting state. However, some people may find that taking their medication during the fasting period causes discomfort or nausea. In this case, it may be best to take the medication during the eating window.

Benefits of Combining Intermittent Fasting and Thyroid Medication

Combining intermittent fasting and thyroid medication may have several benefits, including:


  • Promoting weight loss

  • Improving metabolic health

  • Reducing inflammation

  • Improving thyroid function

  • Reducing the risk of chronic diseases

The Bottom Line

Thyroid medication does not break intermittent fasting, so people who take thyroid medication can still participate in intermittent fasting. However, it is important to listen to your body and take your medication in a way that is comfortable for you. As with any dietary approach or medication, it is always best to talk to your doctor before making any changes.

Frequently Asked Questions

Intermittent fasting has become a popular trend for weight loss and overall health. However, many people are confused about whether taking thyroid medication can break their fast. Here are some common questions and answers to help clear up any confusion.

Can I take my thyroid medication while fasting?

Yes, you can take your thyroid medication while fasting. It is important to take your medication at the same time every day to maintain consistent levels of thyroid hormones in your body. If you are doing intermittent fasting, you may want to adjust the timing of your medication so that you take it during your eating window. This can help ensure that your medication is absorbed properly and does not interfere with your fasting goals.

It is important to talk to your doctor about any changes to your medication schedule or fasting routine to ensure that your thyroid levels remain stable.

Does taking thyroid medication break my fast?

Taking thyroid medication does not break your fast. Thyroid medication is a prescription drug that is designed to regulate your thyroid hormones. It does not contain any calories or nutrients that would interfere with your fasting goals. However, some people may experience side effects from their medication, such as nausea or stomach upset, which could make fasting more difficult.

If you are experiencing side effects from your medication while fasting, talk to your doctor about adjusting your medication schedule or exploring alternative treatments.

Can I drink water while taking my thyroid medication?

Yes, you can drink water while taking your thyroid medication. In fact, it is recommended that you take your medication with a full glass of water to help it dissolve and absorb properly. Drinking water during your fasting period is also important to stay hydrated and help curb hunger pangs.

However, be sure to avoid drinking any other liquids, such as coffee or tea, that may contain calories or interfere with your fasting goals.

Should I adjust my medication dosage while fasting?

You should not adjust your medication dosage without first consulting your doctor. Your thyroid medication is carefully prescribed based on your individual needs and should not be changed without medical guidance. However, your doctor may recommend adjusting the timing of your medication to better align with your fasting goals.

It is important to monitor your thyroid levels regularly and let your doctor know if you experience any changes in symptoms or side effects while fasting.

What are the potential risks of taking thyroid medication while fasting?

While taking thyroid medication while fasting is generally safe, there are some potential risks to be aware of. Fasting can cause changes in your metabolism and hormone levels, which may affect how your body absorbs and processes your medication. This can lead to fluctuations in your thyroid levels, which could cause symptoms such as fatigue, weight gain, or depression.

To minimize these risks, it is important to talk to your doctor about any changes to your medication schedule or fasting routine. Your doctor can monitor your thyroid levels and adjust your treatment plan as needed to ensure that your thyroid function remains stable.

Can I take Medication When Intermittent Fasting?


In conclusion, there is no clear answer to whether or not thyroid medication breaks intermittent fasting. While some experts argue that taking medication during the fasting window can disrupt the benefits of fasting, others suggest that it is necessary for individuals with thyroid conditions to maintain their medication regimen. Ultimately, the decision to continue taking thyroid medication during intermittent fasting should be made in consultation with a healthcare professional.

It is important to note that the benefits of intermittent fasting are numerous and well-documented, including weight loss, improved insulin sensitivity, and reduced inflammation. However, the needs of individuals with thyroid conditions must also be taken into consideration. It may be possible to modify the fasting schedule or medication regimen to achieve optimal results while still addressing any underlying health issues.

Overall, the key to successful intermittent fasting is finding a balance that works for each individual’s unique needs and circumstances. By working with a healthcare professional and experimenting with different approaches, it is possible to reap the benefits of fasting while still addressing any underlying health concerns.

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