The Truth About Medication & Intermittent Fasting

Does Taking Medication Break Intermittent Fasting?

Intermittent fasting has recently become a popular approach to dieting. But many people wonder: Does taking medication break intermittent fasting? The answer is no, not unless the medication contains caloric substances like sugar or starch.

Is it permissible to take medicine while intermittent fasting?

Absolutely. Intermittent fasting does not necessarily mean you have to go without medication. No, since you can always schedule and align your medication during the eating window, it does not break a fast. More than breaking a fast, some medicines might even be helpful for weight loss.

When should I take my medications during intermittent fasting?

Most health care providers recommend taking levothyroxine 30 minutes to one hour before breakfast – this seems to be the sweet spot for most people. Taking your medications during the eating window is safe and will not break your fast. After consulting your doctor, you can adjust the timing of your medication to fit your fasting schedule.

Does taking medication break a fast?

Generally speaking, medications don’t “break” a fast — assuming you don’t take them with food. A few caveats:

  • Some medications (like cough syrup) contain sugar or starch, which could break a fast.
  • In some cases, medications can affect your empty stomach and cause nausea, so taking your medication with food can help.

Do medicines and over-the-counter medications break my fast?

No. You still need to take your medicines as prescribed, but make sure you can still follow your intermittent fasting schedule. If you’re taking any over-the-counter medications, read the label to make sure there are no added sugars or starches that could break your fast.


Intermittent fasting does not necessarily mean you have to go without medication. Taking medications while intermittent fasting is safe and will not break a fast, as long as the medication does not contain caloric substances like sugar or starch. However, always consult your doctor before adjusting your medication timing to fit your fasting schedule. In addition, read the labels of any over-the-counter medications to make sure they don’t contain any added sugars or starches that could break a fast.

Does taking medication affect the results of intermittent fasting?

It’s important to
talk to your doctor about any health concerns before you start a fasting

Health professionals advise that those who need to take medication with food should not engage in intermittent fasting. It is important to speak to a doctor before beginning a fasting program if there are any health concerns.

Is it permissible for me to take my medicine while fasting?

your doctor may advise you not to fast.

What disrupts intermittent fasting?

Protein powder can contain calories and stimulate an insulin response which signals to your body that you are not fasting (16). Some supplements contain ingredients such as maltodextrin, pectin, cane sugar, or fruit juice concentrate that can provide sugar and calories which may disrupt your fasting period.

What cannot disrupt an intermittent fasting regimen?

It is generally accepted that consuming anything with calories while fasting is not allowed. However, drinking black, unsweetened coffee, tea, and water are typically considered acceptable.

the truth about medication intermittent fasting 17 04 2023 1

the truth about medication intermittent fasting 17 04 2023 2

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