synthetic - involving or of the nature of synthesis (combining separate elements to form a coherent whole) as opposed to analysis; limnology is essentially a synthetic science composed of elements...that extend well beyond the limits of biology- P.S.Welch.
L-theanine is most effective in the range of 50-200 mg, with the effect being felt within 30 minutes and lasting for 8-10 hours. Individuals with high stress levels may increase their dosage of L-theanine to at least 100 mg, with no more than 600 mg being taken in a six hour period. FDA recommends a maximum dose of 1200 mg daily, although the reason for this limit is not clear, due to its demonstrated safety. There are no known adverse reactions to L-theanine and no drug interactions have been reported. L-theanine is not affected by food and may be taken anytime, as needed.
According to the FDA, the Maximum Recommended Therapeutic Dose (MRTD) for Lysine is 100 mg per kg of body weight per day (mg/kg-bw/day).[1] For example, if you weigh 60kg than the maximum dose could equate to 6000mg per day.