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J Pharm Pract
Most protocols run 4 to 6 weeks minimum, with some extending to 8 to 12 weeks for more severe injuries

Jan 2016;50(1):27-31

Both selegiline and rasagiline have FDA approval for the treatment of Parkinson's disease

Eaton WW, Rose NR, Kalaydjian A, Pedersen MG, Mortensen PB

The effects last approximately 60-90 minutes, though some studies suggest effects may persist up to 4 hours as oxytocin continues absorbing through the nasal tissue
