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L-carnitine may help delay this by encouraging the body to use fat for fuel earlier in the session

Abdel-Khalek AE, El-Ratel IT, Wafa WM, El-Nagar HA, Younan GE, Fouda SF

Energy levels and recovery speed may return toward baseline, and anti-aging benefits fade gradually over weeks to months

The Bottom Line The optimal IGF-1 LR3 dosage protocol balances effectiveness with safety: 20-50 mcg per day for 4-6 weeks , injected post-workout or before bed, with careful attention to blood sugar management and receptor sensitivity

Reduce screen time before bed to improve sleep quality and melatonin production, which indirectly supports glutathione