4-hydroxyphenylglycine for COVID-19

 4-hydroxyphenylglycine has been reported as potentially beneficial for COVID-19 in the following study.
COVID-19 involves the interplay of 350+ viral and host proteins and factors providing many therapeutic targets. Scientists have proposed 10,000+ potential treatments. c19early.org analyzes 210+ treatments. We have not reviewed 4-hydroxyphenylglycine in detail.
Dalisay et al., Identification of SARS-CoV-2 3CLpro inhibitors from marine actinomycetes through integrated phylogeny-based metabolomics with functional screening and bioinformatic analysis, Scientific Reports, doi:10.1038/s41598-025-25354-0