Regular Retail: $34.99Zenbev can be taken during the day and night to alleviate tryptophan-deficiency related states such as stress and sleeplessness. Taken during the day, Zenbev's tryptophan metabolizes into serotonin which enhances mood and emotion. Taken at night, serotonin turns into melatonin which activates the brain's sleep mechanism, allowing for a natural restful sleep.
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