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Herbs & botanicals

Slippery elm

Inner bark of the slippery elm tree from North America. It turns slimy in water and coats the throat and stomach.

19 products from US online stores, sorted by what 400 mg of slippery elm costs – not by the price per pack.

3.4¢Lowest cost
per 400 mg slippery elm

  • Prices checked Nov 1, 2026, US
  • No paid placements

What does 400 mg mean?

slippery elm per serving in most of the products we checked
400–2,000 mgslippery elm per serving in most of the products we checked
  • 400 mg is a fixed amount to compare by: half of the 19 products we checked have up to 1,050 mg per serving, the other half more.
  • There’s no official daily amount for slippery elm.

We compare by 400 mg only so products line up – it’s not a recommendation. Not medical advice.

Where products miss quality points

How the 19 products score

  • Very good 90+: 0
  • Good 75+: 19
  • Fair 60+: 0
  • Low under 60: 0
have no seal from an independent testing program
19 of 19have no seal from an independent testing program10 of 30 testing points for GMP, 15 for the 3 whose label says “third-party tested”

The full 30 testing points need an independent test. Every supplement sold in the US is made under the FDA’s GMP rules – the maker checks its own products, which gives 10 points. A seal from a testing program like NSF, USP or Informed Choice means a lab outside the company checks that what’s inside matches the label. Most brands don’t take part. That doesn’t make a product bad – without a seal, a clean product still gets up to 80.

We find seals on the label and in NSF’s public lists. USP and Informed Choice don’t let us search their lists automatically, so a seal that’s only in their lists can be missing. How the score works

Pack size

Compare packs of a similar size.

Pack size

All sizes in one list can affect the results – big packs usually cost less per 400 mg. Pick a size above to compare packs that are alike.

Sort by

19 products · cheapest per 400 mg slippery elm first

  1. Rank 1

    Micro Ingredients

    Organic Slippery Elm Bark Powder

    Whole herb · Powder

    75Good qualityCountry not stated
    3.4¢

    per 400 mg

    Lowest

    Pack
    $38.99648 servings
    Slippery elm per serving
    700 mg
    Pack lasts
    1,134 daysif you take 400 mg a day
    vitacost.com (opens in a new tab)

    Checked Nov 1, 2026 · Label

  2. Rank 2

    Frontier Co-op

    Slippery Elm Inner Bark, Cut & Sifted

    Loose herb · Powder

    75Good qualityCountry not stated
    3.8¢

    per 400 mg

    11% more

    Pack
    $43.20453 g (1 lb)412 servings
    Slippery elm per serving
    1,100 mgin 1.1 g
    Pack lasts
    1,132 daysif you take 400 mg a day
    vitacost.com (opens in a new tab)

    Checked Nov 1, 2026 · Label

  3. Rank 3

    NOW Foods

    Slippery Elm Powder

    Extract · Powder

    75Good qualityPacked in USA
    4.1¢

    per 400 mg

    19% more

    Pack
    $11.60113 g (4 oz)75 servings
    Slippery elm per serving
    1,500 mgin 1.5 g
    Pack lasts
    282 daysif you take 400 mg a day
    vitacost.com (opens in a new tab)

    Checked Nov 1, 2026 · Label

  4. Rank 4

    Frontier Co-op

    Organic Slippery Elm, Inner Bark Powder

    Whole herb · Powder

    75Good qualityCountry not stated
    4.9¢

    per 400 mg

    42% more

    Pack
    $55.21453 g (1 lb)348 servings
    Slippery elm per serving
    1,300 mgin 1.3 g
    Pack lasts
    1,132 daysif you take 400 mg a day
    vitacost.com (opens in a new tab)

    Checked Nov 1, 2026 · Label

  5. Rank 5

    Nutricost

    Slippery Elm Bark

    Extract · Capsules

    80Good qualityMade in USA
    8¢

    per 400 mg

    132% more

    Pack
    $11.95120 capsules60 servings
    Slippery elm per serving
    1,000 mgin 2 capsules
    Pack lasts
    120 daysif you take 1 capsule (500 mg) a day
    vitacost.com (opens in a new tab)

    Checked Nov 1, 2026 · Label

  6. Rank 6

    NOW Foods

    Slippery Elm, 400 mg

    Whole herb · Capsules

    75Good qualityMade in USA
    8¢

    per 400 mg

    133% more

    Pack
    $8.00100 capsules50 servings
    Slippery elm per serving
    800 mgin 2 capsules
    Pack lasts
    100 daysif you take 1 capsule (400 mg) a day
    vitacost.com (opens in a new tab)

    Checked Nov 1, 2026 · Label

  7. Rank 7

    Nature's Way

    Slippery Elm Bark

    Whole herb · Capsules

    75Good qualityPacked in USA
    8.5¢

    per 400 mg

    147% more

    Pack
    $8.50100 capsules25 servings
    Slippery elm per serving
    1,600 mgin 4 capsules
    Pack lasts
    100 daysif you take 1 capsule (400 mg) a day
    vitacost.com (opens in a new tab)

    Checked Nov 1, 2026 · Label

  8. Rank 8

    Nutricost

    Slippery Elm Bark Capsules

    Extract · Capsules

    80Good qualityMade in USA
    9.3¢

    per 400 mg

    171% more

    Pack
    $13.97120 capsules60 servings
    Slippery elm per serving
    1,000 mgin 2 capsules
    Pack lasts
    120 daysif you take 1 capsule (500 mg) a day
    nutricost.com (opens in a new tab)

    Checked Nov 1, 2026 · Label

  9. Rank 9

    Swanson Vitamins

    Slippery Elm Bark

    Extract · Capsules

    75Good qualityCountry not stated
    $0.11

    per 400 mg

    234% more

    Pack
    $6.8960 capsules30 servings
    Slippery elm per serving
    800 mgin 2 capsules
    Pack lasts
    60 daysif you take 1 capsule (400 mg) a day
    swansonvitamins.com (opens in a new tab)

    Checked Nov 1, 2026 · Label

  10. Rank 10

    Nature's Answer

    Slippery Elm Extract, Alcohol-Free

    Extract · Liquid

    75Good qualityCountry not stated
    $0.12

    per 400 mg

    254% more

    Pack
    $17.9959.1 ml (2 fl oz)30 servings
    Slippery elm per serving
    2,000 mgin 2 ml
    Pack lasts
    147 daysif you take 400 mg a day
    vitacost.com (opens in a new tab)

    Checked Nov 1, 2026 · Label

  11. Rank 11

    Nature's Way

    Slippery Elm Bark

    Whole herb · Capsules

    75Good qualityPacked in USA
    $0.12

    per 400 mg

    263% more

    Pack
    $12.49100 capsules25 servings
    Slippery elm per serving
    1,600 mgin 4 capsules
    Pack lasts
    100 daysif you take 1 capsule (400 mg) a day
    naturesway.com (opens in a new tab)

    Checked Nov 1, 2026 · Label

  12. Rank 12

    Swanson Vitamins

    Slippery Elm Bark, 400 mg

    Extract · Capsules

    75Good qualityCountry not stated
    $0.13

    per 400 mg

    267% more

    Pack
    $7.5860 capsules30 servings
    Slippery elm per serving
    800 mgin 2 capsules
    Pack lasts
    60 daysif you take 1 capsule (400 mg) a day
    vitacost.com (opens in a new tab)

    Checked Nov 1, 2026 · Label

  13. Rank 13

    Solaray

    True Herbs, Slippery Elm, 400 mg

    Whole herb · Capsules

    75Good qualityCountry not stated
    $0.13

    per 400 mg

    284% more

    Pack
    $13.19100 capsules
    Slippery elm per serving
    400 mgin 1 capsule
    Pack lasts
    100 daysif you take 1 capsule (400 mg) a day
    vitacost.com (opens in a new tab)

    Checked Nov 1, 2026 · Label

  14. Rank 14

    Vital Nutrients

    Slippery Elm Bark Powder

    Whole herb · Powder

    80Good qualityMade in USA
    $0.13

    per 400 mg

    292% more

    Pack
    $58.99175 g (6.2 oz)70 servings
    Slippery elm per serving
    2,500 mgin 2.5 g
    Pack lasts
    437 daysif you take 400 mg a day
    vitalnutrients.net (opens in a new tab)

    Checked Nov 1, 2026 · Label

  15. Rank 15

    Nature's Answer

    Slippery Elm

    Whole herb · Capsules

    75Good qualityCountry not stated
    $0.14

    per 400 mg

    315% more

    Pack
    $11.2490 capsules30 servings
    Slippery elm per serving
    1,050 mgin 3 capsules
    Pack lasts
    45 daysif you take 2 capsules (700 mg) a day
    vitacost.com (opens in a new tab)

    Checked Nov 1, 2026 · Label

  16. Rank 16

    Nature's Answer

    Slippery Elm - Veggie Capsules

    Whole herb · Capsules

    75Good qualityCountry not stated
    $0.19

    per 400 mg

    454% more

    Pack
    $14.9990 capsules30 servings
    Slippery elm per serving
    1,050 mgin 3 capsules
    Pack lasts
    45 daysif you take 2 capsules (700 mg) a day
    naturesanswer.com (opens in a new tab)

    Checked Nov 1, 2026 · Label

  17. Rank 17

    Oregon's Wild Harvest

    Organic Slippery Elm

    Whole herb · Capsules

    75Good qualityCountry not stated
    $0.20

    per 400 mg

    481% more

    Pack
    $35.96180 capsules60 servings
    Slippery elm per serving
    1,200 mgin 3 capsules
    Pack lasts
    180 daysif you take 1 capsule (400 mg) a day
    vitacost.com (opens in a new tab)

    Checked Nov 1, 2026 · Label

  18. Rank 18

    Oregon's Wild Harvest

    Slippery Elm Capsules

    Whole herb · Capsules

    75Good qualityCountry not stated
    $0.25

    per 400 mg

    626% more

    Pack
    $44.95180 capsules60 servings
    Slippery elm per serving
    1,200 mgin 3 capsules
    Pack lasts
    180 daysif you take 1 capsule (400 mg) a day
    oregonswildharvest.com (opens in a new tab)

    Checked Nov 1, 2026 · Label

  19. Rank 19

    Oregon's Wild Harvest

    Slippery Elm Organic Extract

    Extract · Liquid

    75Good qualityMade in USA
    $1.12

    per 400 mg

    3,150% more

    Pack
    $20.9530 servings
    Slippery elm per serving
    250 mg
    Pack lasts
    18 daysif you take 400 mg a day
    oregonswildharvest.com (opens in a new tab)

    Checked Nov 1, 2026 · Label

Filters

Good to know

Fact
3,150%more per 400 mg for the most expensive product than for the cheapest.
Fact
19%more per 400 mg for the cheapest extract than for the cheapest whole herb.

How we checked: one-time price for each size in the store’s US online shop, before sales tax and shipping, without subscriptions or coupons. Prices change often, so check the store before you buy. More on how we check

The amount we compare by only makes products comparable – it is not a dosage recommendation. Not medical advice.

How we calculate

Cost per dose = price ÷ (servings × amount per serving) × comparison amount. Example: $119.99 for 74 servings with 24 g of protein each is 1,776 g of protein. $119.99 ÷ 1,776 g × 30 g = $2.03 per 30 g of protein.

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