Swanson Slippery Elm Bark

Our verdict

Swanson Slippery Elm Bark works out to $0.11 per serving of slippery elm, at 400mg per serving in capsule form. That puts it around the median of the 11 slippery elm products we can price per dose, where the typical serving costs $0.10, a Value Index of 0.9 where the median product is 1.0. One container lasts 60 days at the label dose of 1 serving a day, about $3.45 a month. We could not verify a third-party certification for Swanson 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.