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The trial is a double-blind study, so no one knows who is on the drug and who is taking the placebo, with researchers monitoring changes in iron levels in all participants.

“Although there are many hangover products marketed, there is no convincing scientific evidence that these treatments are effective. Independent double-blind, placebo-controlled clinical trials in social drinkers are needed,” Verster said.

While several randomized, double-blind, multicenter phase II or III trials published in the past 20 years support the concept that even a single dose of cell products has beneficial effects in patients with heart failure on optimal medical therapy, the ongoing trial are taking novel directions, Zhang says.

As a double-blind, double-dummy, active-comparator placebo-controlled trial, neither the people in the study, or the study investigators knew which study arm or treatment they were given.

In the randomized, double-blind, Phase III clinical trial comparing the efficacy of the two medications, 99% of the participants in the Lenacapavir group did not acquire an HIV infection.