Starting with a typical dose of 500 milligrams of tryptophan for adults can provide quick benefits, but caution is advised for those on multiple antidepressants due to the risk of serotonin syndrome. For children, a chewable 100-milligram option is available, though it should not be used long-term due to its sweet taste. Mixing tryptophan powder with banana or inositol can help mask the unpleasant flavor, ensuring users receive the most benefits.