Long Dan Xie Gan Decoction combined with valacyclovir appears to enhance the treatment of herpes zoster, improving pain intensity, and crust formation time.
Systematic Review Acyclovir Long Dan Xie Gan Tang Shingles
For this systematic review, a comprehensive search was conducted in bibliographic databases - PubMed, Chinese Scientific Journals Database, China National Knowledge Infrastructure, and Wan-fang Database until the 6th of April, 2021. The main focus was on Randomised Controlled Trials (RCTs) that looked at herpes zoster treatments involving the combined use of Longdanxiegan Decoction (LDXGD) and valacyclovir. The quality of these studies was assessed using the Cochrane risk of bias tool and a meta-analysis was conducted using RevMan 5.4.1 software.
The analysis incorporated five studies with a total of 414 participants. The methodological quality of these studies ranged from low to moderate. The combined use of LDXGD and valacyclovir showed relative benefits in efficacy rates compared to the use of valacyclovir alone. This was reflected in the lower pain intensity noted by a visual analogue scale, decreased incidence of postherpetic neuralgia (PHN), and shorter time frame to crust formation. However, the safety profile for the combined treatment of LDXGD and valacyclovir remains unclear.
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