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The added glucagon receptor activity is whats theorized to give retatrutide its faster weight loss potential though it remains investigational

Systemic reactions like severe abdominal pain, jaundice, or breathingdifficulty in rare cases

Much of the evidence rests on in-vitro fibroblast work, rodent wound-healing models, and small cosmetic-research panels

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Research in humans is a bit less impressive Clinical trials in humans A 1981 double-blind study found that chronic insomniac patients found that subjects slept 59% more, shorter sleep latency, and higher sleep efficiency (Schneider 1981) A 1987 double-blind study did not find any statistically significant changes in sleep structure as measured by REM sleep, NREM sleep, or total sleep time (Debellis 1987) A 1992 double-blind study in 14 chronic insomnia patients found higher sleep efficiency and subjectively estimated tiredness decreased to similar levels of healthy subjects in 7 nights of injections (Schneider 1992) There are some limitations to these studies however