Cannabis compound stops coronavirus in test tube, but can it treat Covid?

Early research suggesting that a popular non-psychoactive compound derived from marijuana might help prevent or treat Covid-19 warrants further investigation in rigorous clinical trials, researchers say.

Several recent cannabidiol, or CBD, laboratory studies have yielded promising results, attracting media attention.

However, many other potential Covid treatments that showed promise in test tubes, ranging from hydroxychloroquine to various cancer and other disease treatments, ultimately failed to show benefit for Covid-19 patients when studied in clinical trials.