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DSIP/Selank is ideal for individuals experiencing stress-related insomnia where anxiety or rumination interferes with sleep, burnout characterized by both exhaustion and inability to achieve restorative sleep, performance professionals managing high-stress environments requiring both mental clarity and recovery optimization, chronic stress with inadequate sleep recovery creating persistent fatigue cycles, anxiety disorders impacting both daytime function and sleep quality, shift work or irregular schedules disrupting circadian rhythms and stress regulation systems, athletes or high performers requiring stress resilience alongside deep sleep for recovery, or anyone recognizing that their sleep problems are fundamentally linked to stress levels and vice versa

American Diabetes Association

It is used to treat vitamin deficiencies and manage neurological problems like peripheral neuropathy

And among these, cysteine is the most important because without enough of it, the body cant synthesise glutathione