NOW Foods L-Theanine, Double Strength 200 mg Per Cap - 180 Veg Capsules…

Our verdict

NOW Foods L-Theanine, Double Strength 200 mg Per Cap - 180 Veg… works out to $0.17 per serving of l-theanine, at 200mg per serving in capsule form. That puts it around the median of the 30 l-theanine products we can price per dose, where the typical serving costs $0.17, a Value Index of 1.0 where the median product is 1.0. One container lasts 180 days at the label dose of 1 serving a day, about $4.99 a month. We could not verify a third-party certification for NOW Foods in a public registry. Worked out from the current retail price as of 2026-11-13; confirm the live price on Amazon.com before buying.