Herbs + supplements combination: ① most common supplements (vitamins, minerals, omega-3, probiotics) are safe with herbs, ② some interactions possible (high-dose vitamin K with blood-moving herbs, MSM with anticoagulants), ③ glucosamine/chondroitin works synergistically with bone herbs, ④ inform doctor of ALL supplements, ⑤ take with 1–2 hour gap when possible. Doctor adjusts prescription accordingly. Korean medicine combined with appropriate supplements maximizes results.