Most customers at Chinese medicine shops are old people who have been using the herbs since they were children and find it hard to give them up.
對於不知用法的顧客，草藥店老闆多半會教給他們如何配方與如何煎煮。這些用藥經驗多半由一代代口耳相傳，也有少部份是從老顧客口中探聽出來的。