Q I take an antihistamine every day for allergic rhinitis. Is it okay to take herbal medicine together?
A In most cases, antihistamines and herbal medicine can be taken together, but you must accurately inform us of your current medications, dosages, and duration at the time of consultation. Because some herbal ingredients may share liver metabolic pathways, we prescribe only after individual review.
Detailed Answer
Antihistamines (first generation: chlorpheniramine; second generation: cetirizine, loratadine, etc.) are mainly metabolized by the liver's CYP450 enzyme system. Some herbal ingredients use the same pathway, so they may affect the rate of metabolism. In clinical practice, most antihistamines can be safely taken together with herbal medicine, but if you are taking a high dose or several conventional drugs at the same time, you must present your full medication list to the prescribing Korean medicine doctor. Nasal steroid sprays are locally absorbed, so the risk of systemic interaction with herbal medicine is low. Do not stop your existing medication on your own.
Korean Medicine Clinic Perspective
While antihistamines suppress the amount of secretion, Korean medicine treatment improves the underlying state in which the mucosa overreacts. As treatment progresses, dependence on antihistamines often decreases naturally.
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