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.
One reason may have been an amino acid in their green tea called L-theanine, says Mark Blumenthal, of the American Botanical Council. Research shows that L-theanine helps curb a rising heart rate and blood pressure, and a few small human studies have found that it reduces anxiety. In one study, anxiety-prone subjects were calmer and more focused during a test if they took 200 milligrams of L-theanine beforehand.