Q. I'm currently doing intermittent fasting for breakfast. Is it okay to take my herbal medicine at the same time?

From a Traditional Korean Medicine (TKM) perspective, each individual possesses a different 'digestive capacity.' First, for those with smooth digestive functions, taking herbal medicine during intermittent fasting is permissible. However, caution is needed if the fasting window is too long, as certain medicinal components may irritate the gastric mucosa on an empty stomach. Second, the approach differs for those with 'Spleen Deficiency' (Bi-heo, 脾虛), meaning weak digestive power. If these individuals force a strict fast, it can lead to depleted Qi and a slowed metabolism, reducing the overall efficacy of the treatment. In such cases, it is far safer to consume warm water or a light porridge before taking the medicine. Third, for patients with significant 'Phlegm-Fluid' (Dam-eum, 痰飮) or 'Blood Stasis' (Eo-hyeol, 瘀血)—accumulated metabolic waste and stagnant blood—sudden fasting can place excessive strain on the body. It is more effective to first create an internal environment that facilitates the discharge of these wastes before adjusting fasting hours. Ultimately, the answer lies in your body's unique reaction. Rather than forcing a strict schedule, the most efficient method is to synchronize your medication timing and diet based on your current condition. When you visit the clinic, I will first assess your digestive status to provide a personalized plan.