Vivarin Smooth Energy Extended Release Caffeine Tablets

Our verdict

Vivarin Smooth Energy Extended Release Caffeine Tablets works out to $0.23 per serving of caffeine, at 200mg per serving in tablet form. That puts it above the median of the 25 caffeine products we can price per dose, where the typical serving costs $0.06, a Value Index of 0.2 where the median product is 1.0. One container lasts 40 days at the label dose of 1 serving a day, about $6.96 a month. We could not verify a third-party certification for Vivarin 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.