In general, all of the supplements listed can be used at the same time, as long as they are used in moderate doses. L-tryptophan and GABA can enhance each other's sedative effects, while inositol supports mood regulation and phosphatidylserine reduces stress. However, it is important to monitor the body's reaction, avoid overdose, and pay attention to possible side effects, such as excessive sleepiness, dizziness, or stomach problems.

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