BRD Clinic
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I am doing intermittent fasting; is it okay to take herbal medicine at the same time?

Yes, it is possible. However, it is important to adjust your dosage timing based on the ingredients of the medicine and your individual digestive health.

We understand that coordinating your medication schedule while maintaining a fasting window can be challenging. To give you a direct answer: it is perfectly fine to do both.

However, because gastrointestinal health varies by individual, taking medication without consideration could lead to heartburn or stomach irritation. In Traditional Korean Medicine (TKM), a weakened digestive state is referred to as Bi-heo (脾虛), or Spleen Deficiency. If you take potent herbal formulas on an empty stomach while in this state, you may experience dizziness or nausea.

💡 Dosage Guide

Depending on your digestive capacity and the ingredients of the medicine, you should decide whether to take it during your 'feeding window' or during your fasting period.

  • For those with strong digestion: Taking the medicine during the fasting window is acceptable and may even enhance metabolic effects.
  • For those with sensitive stomachs: Take the medicine within your feeding window to minimize irritation to the gastric mucosa.
  • Checking ingredients: Be cautious with formulas containing strong appetite suppressants, as taking them on an empty stomach may intensify side effects such as increased heart rate or insomnia.

Therefore, rather than following a general rule, it is more effective to first determine the extent of your Dam-jeok (痰積) (a condition where accumulated metabolic waste impairs gastric function) and then establish a personalized dosing schedule.

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Dr. Yeonseung Choe

Dr. Yeonseung ChoeChief Director

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I am doing intermittent fasting; is it okay to…. Yes, it is possible. However, it is important to adjust your dosage timing based on the ingredients of the medi

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