1 With all needed parts and labor, hiring a plumber to install a traditional gas water heater costs $300-$3,500 or more, depending on capacity (with 40 or 50 gallons the most common sizes); length of warranty (typically 5-12 years); and the amount of repairs required to meet current building codes.
L-Theanine and Caffeine Dosage. Theanine and caffeine are most often used in a 2:1 ratio. Each capsule contains 200mg of theanine and 100mg of caffeine. For best results, individuals should take 1 theanine and caffeine capsule per day.
L-Theanine can be found in: The leaves of camellia sinensis (source of green tea catechins and the plant used to produce green, black, and white teas) at 0.9-3.1% of the dry weight of the leaves and said to range from 25-60mg per 200mL serving of tea (2.5g of dried tea leaves) C. japonica and C. sasanqua.