本品在水中溶解度小,在乙醇中易溶。在酸性溶液中作用好(PH 6以下),在碱性溶液中作用减弱,此系酚羟基解离所致,故需增大用量。由于本品毒性小,几无药理作用,广泛应用于药剂和食品的防腐。目前,药房使用的多为尼泊金乙酯。用量:内服液体制剂0.02～0.05%;中草药制剂0.03～0.1%; This product is small in water solubility, soluble in ethanol. Good effect in acidic solution (PH6 or less), the role of weakening in alkaline solution, the Department of phenolic hydroxyl dissociation caused, it is necessary to increase the dosage. As the toxicity of this product is small, few pharmacological effects, widely used in preservatives and food. Currently, pharmacies use mostly ethylparaben. Dosage: Oral liquid preparations 0.02 to 0.05%; Chinese herbal preparations 0.03 to 0.1%;