带状疱疹是皮肤科的常见病、多发病。过去用阿昔洛韦治疗有效,但阿昔洛韦口服后吸收较慢且不完全,其生物利用度只有10％～20％,其半衰期只有0.8小时。而新一代口服抗病毒药法昔洛韦口服后吸收良好,其半衰期长达10～20小时,只要口服250mg每日3次即可达到阿昔洛韦800mg每日5次的疗效,而且其副作用与安慰剂相接近。 Shingles is a common dermatology, frequently-occurring disease. In the past, acyclovir was effective, but acyclovir absorbed slowly and incompletely after oral administration. Its bioavailability was only 10% -20% and its half-life was only 0.8 hours. And a new generation of oral antiviral drugs, good after oral absorption of cyclovir, its half-life of up to 10 to 20 hours, as long as oral 250mg 3 times a day to achieve acyclovir 800mg 5 times a day, and its side effects Close to placebo.