PMID- 37980573 OWN - NLM STAT- MEDLINE DCOM- 20231127 LR - 20240222 IS - 1365-2060 (Electronic) IS - 0785-3890 (Print) IS - 0785-3890 (Linking) VI - 55 IP - 2 DP - 2023 TI - Safety, tolerability and pharmacokinetics of forsythin in healthy subjects: a double-blinded, placebo-controlled single-dose and multiple-dose escalation and food effect study. PG - 2274512 LID - 10.1080/07853890.2023.2274512 [doi] LID - 2274512 AB - BACKGROUND: Forsythin, an active compound from Forsythiae Fructus, has the potential to treat the common cold and influenza through its antipyretic-analgesic, anti-inflammatory and antiviral effects. The safety, tolerability and pharmacokinetic (PK) profile of forsythin were evaluated in healthy Chinese subjects. METHODS: This phase 1a study included three parts: double-blind, randomized, placebo-controlled single-ascending-dose (SAD) (50, 100, 200, 400, 600 or 800 mg), food effect investigation (100 mg) and multiple-ascending-dose (MAD) (50, 100 or 200 mg TID for 5 days). RESULTS: Forsythin is safe and tolerable in healthy Chinese subjects. The rates of adverse events (AEs) in the forsythin cohort were similar to those in the placebo cohort. Forsythin is well-absorbed after single or multiple doses and is extensively metabolized. The primary metabolites were aglycone M1, M1 sulphate (M2) and M1 glucuronide (M7). Exposure to forsythin (100 mg) was higher after food intake by approximately 1.4-fold, whereas M2 and M7 did not change. The steady state was reached around three days in the MAD study. Forsythin, M2 and M7 accumulation on day 5 was 1, 3 and 2, respectively. CONCLUSIONS: The safety and PK profiles of forsythin support further evaluation of its efficacy in individuals with the common cold or influenza. FAU - Li, Cuiyun AU - Li C AD - Phase I Clinical Trial Unit, First Hospital, Jilin University, Changchun, China. FAU - Wu, Min AU - Wu M AD - Phase I Clinical Trial Unit, First Hospital, Jilin University, Changchun, China. FAU - Zhang, Hong AU - Zhang H AD - Phase I Clinical Trial Unit, First Hospital, Jilin University, Changchun, China. FAU - Zhu, Xiaoxue AU - Zhu X AD - Phase I Clinical Trial Unit, First Hospital, Jilin University, Changchun, China. FAU - Fu, Li AU - Fu L AD - Dalian Fusheng Institute of Natural Medicine, Dalian, China. FAU - Wang, Shuo AU - Wang S AD - Dalian Fusheng Institute of Natural Medicine, Dalian, China. FAU - Lu, Mingming AU - Lu M AD - Dalian Fusheng Institute of Natural Medicine, Dalian, China. FAU - Zhong, Dafang AU - Zhong D AD - State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China. FAU - Ding, Yanhua AU - Ding Y AD - Phase I Clinical Trial Unit, First Hospital, Jilin University, Changchun, China. LA - eng PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20231119 PL - England TA - Ann Med JT - Annals of medicine JID - 8906388 RN - VE9P4964MG (phillyrin) SB - IM MH - Humans MH - Healthy Volunteers MH - *Common Cold/drug therapy MH - *Influenza, Human MH - Area Under Curve MH - Double-Blind Method MH - Dose-Response Relationship, Drug PMC - PMC10836277 OTO - NOTNLM OT - Forsythin OT - food effect OT - pharmacokinetics OT - safety OT - tolerability COIS- The authors declare no competing interests. EDAT- 2023/11/19 18:41 MHDA- 2023/11/27 12:42 PMCR- 2023/11/19 CRDT- 2023/11/19 15:14 PHST- 2023/11/27 12:42 [medline] PHST- 2023/11/19 18:41 [pubmed] PHST- 2023/11/19 15:14 [entrez] PHST- 2023/11/19 00:00 [pmc-release] AID - 2274512 [pii] AID - 10.1080/07853890.2023.2274512 [doi] PST - ppublish SO - Ann Med. 2023;55(2):2274512. doi: 10.1080/07853890.2023.2274512. Epub 2023 Nov 19.