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.
Most green tea sold in the United States contains less than 10 milligrams of L-theanine while the suggested dose to decrease symptoms is 50 to 200 milligrams. It can't hurt to sip a few cups on your way to more GABA; green tea has other health-promoting benefits.