Herb & Ingredient Library
Slippery Elm & Marshmallow Root
Why do I have to take GI Protect two hours away from my pills?
By Dr. Paulette Y. Jones, DNP-L, RN · N&O LLC
Slippery Elm and Marshmallow Root: Timing Around Your Medications
Ulmus rubra · Althaea officinalis
These two gentle herbs are among the safest in the whole library, and they come with one instruction that customers sometimes miss: take them apart from medications. Here is why, and what the research says about how they work.
What it is
Slippery elm inner bark and marshmallow root are both demulcents — plants rich in mucilage, a soluble fiber that swells into a soothing gel when it meets water. That gel coats the lining of the throat, stomach, and intestine. Both have been used for centuries for sore throats, occasional heartburn, and digestive irritation, and both are considered safe enough that the FDA recognizes slippery elm as a throat-soothing ingredient in lozenges.
What the research has looked at
- Small clinical studies of slippery elm as part of combination formulas have reported improvement in bowel regularity and abdominal comfort in people with irritable bowel complaints.
- Laboratory studies show that marshmallow root mucilage forms a protective layer over mucous membranes and has mild anti-inflammatory activity in the lining.
- Most of the evidence is traditional and mechanistic rather than from large trials; the safety record, however, is long and clean.
Doses used in research
Traditional use is 1–2 teaspoons of powdered bark or root stirred into warm water, once or twice a day. GI Protect delivers 2,000 mg of each in one bedtime scoop.
Interactions and cautions
The mucilage that makes these herbs work can also coat other things — including medications taken at the same time — and reduce how much of them is absorbed. That is why we ask customers to take GI Protect at least two hours apart from any oral medication. Marshmallow root may have a mild effect on blood sugar and on lithium levels, so people on diabetes medication or lithium should mention it to their provider. Neither herb is habit-forming.
| Drug / condition | Severity | Why | What to do |
|---|
| ALL oral medications | MODERATE | Mucilage coats gut and slows/reduces drug absorption | Take medications 2 hours before or after |
| Pregnancy | MINOR | Outer bark historically abortifacient; inner bark used is not | Use inner bark only |
Who should not take it without a provider's approval: Taking them within two hours of medication; people on lithium without provider approval. Generally considered safe in pregnancy, but consult your provider.
Where we use it
GI Protect is a two-ingredient bedtime powder: slippery elm bark 2,000 mg and marshmallow root 2,000 mg, blended 50/50.
Related: Product Guide & Interactions · Herb & Ingredient Library · Shop
Dr. Paulette Y. Jones holds a Doctor of Nursing Practice in Leadership (DNP-L) and is a Registered Nurse with nearly thirty years of clinical experience. She is the founder and formulator of N&O LLC. This article is for education only and is not medical advice. *These statements have not been evaluated by the Food and Drug Administration. N&O LLC products are not intended to diagnose, treat, cure, or prevent any disease. Always consult your healthcare provider before starting, stopping, or combining any supplement with a medication.
About the Formulator. Dr. Paulette Y. Jones holds a Doctor of Nursing Practice (DNP) with a specialization in Nursing Leadership (DNP-L) and is a Registered Nurse (RN). Dr. Jones is not a medical doctor (MD or DO), is not a nurse practitioner (NP or APRN), and is not a licensed independent prescriber. She does not hold prescriptive authority and does not practice medicine. In connection with N&O LLC, Dr. Jones acts solely as a product formulator, researcher, and wellness entrepreneur. Nothing on this website, on N&O LLC packaging, or in any communication from N&O LLC constitutes medical advice, diagnosis, or treatment, and no provider–patient relationship is created by purchasing or using any N&O LLC product.
Consult Your Provider First. Before taking any N&O LLC supplement, powder, capsule, or tea, consult your own primary care provider, prescribing clinician, or pharmacist — especially if you are pregnant, nursing, or trying to conceive; under 18; taking any prescription medication (including blood thinners, diabetes, blood pressure or heart medication, antidepressants or other psychiatric medication, thyroid or seizure medication, immunosuppressants, or disease-modifying therapies); living with a diagnosed medical condition; or scheduled for surgery. Bring the full ingredient list to that conversation. Your provider, not N&O LLC, should decide whether a product is appropriate for you.
Regulatory Statement. *These statements have not been evaluated by the U.S. Food and Drug Administration. N&O LLC products are dietary supplements and are not intended to diagnose, treat, cure, or prevent any disease. Dietary supplements are not a substitute for prescribed medication, and no N&O LLC product should be used to replace, reduce, or discontinue any medication without the direction of the prescribing provider. Product and protocol names (including “Shield,” “Guardian,” “Protect,” and similar words) are brand names describing intended wellness support and do not represent claims of medical efficacy. Interaction information is compiled from published literature, is not exhaustive, and should be re-verified with a professional before being relied upon. If you experience an unexpected symptom, stop use and contact your provider.