Provided are a crude-drug-containing pharmaceutical composition exhibiting excellent storage stability, and a stabilization method and a storage stabilizing agent for the crude-drug-containing pharmaceutical composition. The pharmaceutical composition includes: (A) at least one component selected from (A-1) phellodendron bark or an extract thereof, (A-2) liquorice root or an extract thereof, (A-3) glycyrrhetinic acid or a salt thereof, (A-4) zanthoxylum or an extract thereof, (A-5) horse chestnut seed or an extract thereof, and (A-6) capsicum or an extract thereof； and (B) loxoprofen or a salt thereof.
