That means some supplement products may not contain what the label says.
No supplement is intended to treat, cure, or prevent disease.
Slippery elm might be useful in treating certain health conditions, but more research is needed.

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Some studies have explored whether slippery elm has anti-inflammatory effects in inflammatory bowel disease.
This reaction may prove helpful in the treatment of minor wounds on the skin.
Always ask your provider before using slippery elm or any other remedy to treat a skin condition.
What Are the Side Effects of Slippery Elm?
Few side effects have been reported for slippery elm but they might be possible.
Precautions
It’s always best to take precautions when using supplements, and that includes slippery elm.
Since research is so limited, there is not enough reliable information about the safety of slippery elm.
People who arepregnantorbreastfeedingshould avoid using slippery elm.
Some research has suggested it could cause amiscarriage.
Can Kids Use Slippery Elm?
Caregivers should avoid giving slippery elm to children unless a healthcare provider has recommended it.
Dosage: How Much Slippery Elm Should I Take?
There are no standard guidelines for the dosage and use of slippery elm.
Slippery elm dosage varies in the studies that have been done on the supplement.
As a general rule, do not take more slippery elm than is recommended on the product label.
Taking too much slippery elm could increase your risk of side effects.
Talk to your healthcare provider about the proper dosage for you.
What Happens if I Take Too Much Slippery Elm?
Slippery elm is not thought to be toxic.
Always follow the directions on the supplement label or those given to you by your provider.
If youre not sure how much is safe to take, ask your provider to recommend a dosage.
Interactions
Slippery elm may interfere with the absorption and effects of certain medications you might be taking.
It is recommended that you avoid taking slippery elm at the same time as any oral medications.
The mucilage in slippery elm could decrease the absorption and effectiveness of somemedicationsif taken at the wrong time.
There are no known interactions between slippery elm and other supplements or foods.
How to Store Slippery Elm
Storing your supplements properly is important.
Slippery elm supplements should be stored in a cool, dry place out of direct sunlight.
Typically, slippery elm extract can be stored outside the refrigerator but check the product label to be sure.
All medicines and supplements should be stored safely where children and pets cannot get to them.
Discard any old slippery elm supplements that have expired.
Similar Supplements
Many supplements on the market may work similarly to slippery elm.
Your healthcare provider can help you choose the best supplements for you.
Slippery elm is not commonly found in foods and is typically used in supplement form.
Food Sources of Slippery Elm
Slippery elm is a tree so its not naturally found in foods.
It might be possible to chew the bark from the slippery elm tree.
The bark is said to feel slippery when chewed, probably because of the mucilage.
Most people choose to use it in supplement form instead.
Slippery Elm Supplements
Slippery elm supplements are typically made from the inner bark of the tree.
you’re able to find them in health food stores, some pharmacies, and online.
Manufacturers of herbal supplements rarely submit products for third-party testing.
This means you may have to use your best judgment when purchasing them.
Try not to be swayed by health claims that may or may not be true.
Summary
The inner bark of the slippery elm tree may offer some health benefits.
However, these claims are not supported by strong scientific evidence.
More studies in humans are needed to prove that slippery elm can help with any health condition.
However, some people should take precautions when using slippery elm.
Pregnant people should avoid taking it because there are safety concerns.
However, it is possible due to the mucilage found in slippery elm.
Mucilage is a soft fiber that may work similarly to other types of fiber recommended for constipation relief.
More research is needed to conclude that slippery elm can relieve constipation.
There is not enough information to know for certain that slippery elm is safe for pregnant people to take.
However, there is no scientific evidence to back this up.
If you need a diuretic, talk with your healthcare provider about a better option than slippery elm.
2018;24(7):656-665. doi:10.1089/acm.2017.0422
MedlinePlus.Slippery elm.
Memorial Sloan Kettering Cancer Center.Slippery elm.
Sego S.Slippery elm: an effective anti-inflammatory agent.
Joo YE.Natural product-derived drugs for the treatment of inflammatory bowel diseases.Intest Res.
2021;26(2):57-64. doi:10.1136/bmjebm-2020-111336.
2015;13(8):1444-9.e1.
2022;12(1):e2022018.
J Diet Suppl.2019;16(6):649-58. doi: 10.1080/19390211.2018.1472713.