Drug & supplement interaction

Oats + Propranolol

Propranolol brand names: Inderal LA, Inderal, Angilol, Syprol, Inderal Injection, and others.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Sep 13, 2026
The bottom line No known interaction

We found no known interaction between Oats and Propranolol in our sources. Absence of a documented interaction is not the same as proven safety, and does not guarantee one does not exist. Do not start, stop, or change a medication or supplement based on this page; confirm with your pharmacist or doctor first.

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Interaction report

Oats and Propranolol

We checked these two against our interaction database. Here is what we found.

No Known Interaction Found

We did not find a documented interaction between Propranolol and Oats in our sources. This does not guarantee that the combination is completely free of risk — there is often limited research on supplements and herbal products, especially around drug interactions.

If you decide to take both, the practical routine is simple: add one new thing at a time and note the date you started it. If the combination is going to disagree with you, it usually shows in the first days to a couple of weeks — and a start date turns “I’ve been feeling off” into something a pharmacist can actually work with. Do not stop a prescribed medicine on your own.

Always talk with your pharmacist or doctor before making changes to your medications or supplements, particularly if you take several medications or have an ongoing health condition.

Oats safety at a glance

Oats overall Generally safe Oats as a food are safe for most people when eaten as part of a normal diet.
Pregnancy Likely Safe When used orally in food amounts. Read the full pregnancy detail
Breastfeeding Likely Safe When used orally in food amounts. Read the full breastfeeding detail

Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center) — the full detail is in the Special populations card below. Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Propranolol and Oats? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Propranolol

Interactions in our licensed database are recorded against drug classes, not just single drug names. Propranolol is filed under 9 classifications — including beta-blockers, cytochrome p450 2c19 (cyp2c19) substrates, antihypertensive drugs. Oats has documented interactions with 2 drug classes — the most serious being antidiabetes drugs (moderate) and insulin (moderate) — and none of Propranolol’s classifications are among them.

Classification data comes from our licensed Natural Medicines dataset. A medication can belong to classes beyond those recorded there, so this describes how the check was run — it is not a safety guarantee.

Keep it in perspective

Oats Does Interact With Other Medications

Oats has 86 moderate known drug interactions in our database — Propranolol isn’t one of them. If you take anything else, check it against the full list below.

Moderate 86 No known interaction 2,744 (incl. Propranolol)
Taking anything else?

Check Another of Your Medications Against Oats

Covers the 2,830 medications we’ve checked against Oats. Pick one to open its full report.

What to actually watch for

What Oats Itself Has Been Linked To

This is not an interaction — nothing below involves Propranolol. It is the side-effect record for Oats on its own, from the licensed Natural Medicines monograph. If something new turns up after you add Oats, this list is the first place to look. 2 entries are worth acting on rather than waiting out — marked below.

  • A bowel blockage Worth acting on Additional detail

    “When consumed orally, oats provide fiber. Increasing fiber in the diet can cause flatulence, bloating, abdominal distention, and unpleasant taste. To minimize side effects, doses should be slowly titrated to the desired level.”

    Oats · Natural Medicines adverse-effect record, reported in flatulence.

    3 sources cited
    1. 12514. Lembo A, Camilleri M. Chronic constipation. N Engl J Med 2003;349:1360-8. . PubMed
    2. 4979. Cooper SG, Tracey EJ. Small-bowel obstruction caused by oat-bran bezoar. N Engl J Med 1989;320:1148-9. DOI
    3. 4985. Rosario PG, Gerst PH, Prakash K, Albu E. Dentureless distention: oat bran bezoars cause obstruction. J Am Geriatr Soc 1990;38:608. PubMed
  • Shortness of breath / A severe allergic reaction / Hives / An allergic reaction Worth acting on Additional detail

    “In a case report, a 45-year-old male developed acute generalized urticaria, facial angioedema, and dyspnea immediately after consuming oat flour. The reaction resolved after emergency care for anaphylaxis. Further investigation revealed an IgE-mediated hypersensitivity reaction to oat proteins.”

    Oats · Natural Medicines adverse-effect record, reported in urticaria.

    1 source cited
    1. 113490. González-Afonso M, Cañas JA, Sastre B, et al. A Case of Anaphylaxis After Ingestion of Oats: Research Into New Allergens. J Investig Allergol Clin Immunol 2022;32(6):506-508. PubMed
  • Bloating or gas Additional detail

    “Orally, oats are well tolerated.

    Most Common Adverse Effects:

    Orally: Abdominal distension, bloating, flatulence, and unpleasant taste.

    Topically: Burning, contact dermatitis, itching, and redness.”

    Oats · Natural Medicines adverse-effect record, reported in dermatitis.

  • Itching / A skin rash Additional detail

    “Topically, oat-containing preparations can cause contact dermatitis. Redness, burning, and itchiness have also been reported.”

    Oats · Natural Medicines adverse-effect record, reported in dermatitis.

    2 sources cited
    1. 12515. De Paz Arranz S, Perez Montero A, Remon LZ, Molero MI. Allergic contact urticaria to oatmeal. Allergy 2002;57:1215. . PubMed
    2. 103340. Sobhan M, Hojati M, Vafaie SY, Ahmadimoghaddam D, Mohammadi Y, Mehrpooya M. The efficacy of colloidal oatmeal cream 1% as add-on therapy in the management of chronic irritant hand eczema: A double-blind study. Clin Cosmet Investig Dermatol. 2020;13:241-25

Everything above comes from the Natural Medicines adverse-effect record for Oats — expand a row for the licensed statement it rests on. We haven’t matched Propranolol to its FDA label in our system yet, so we can’t compare its own side-effect list here — the leaflet that comes with your prescription is the authoritative list for Propranolol.

Special populations

Oats in Pregnancy & Breastfeeding

Pregnancy And Lactation Likely Safe

When used orally in food amounts.

DISCLAIMER: This tool is intended for informational purposes only, and should not be interpreted as specific medical advice. Patients should consult with a qualified healthcare provider before making decisions about therapies and/or health conditions.© 2026 Therapeutic Research Center

Overlapping uses

What Propranolol Is Prescribed For, and What Oats Has Been Studied For

These two come up together because they touch the same health topic — not because they do the same job. Propranolol is a prescription medicine with approved uses on its FDA label. Oats is a supplement: what follows is what researchers have looked at it for, and how strong that evidence is.

Propranolol is prescribed for: This intravenous (IV) form of propranolol is used in hospital or clinical settings to treat dangerous heart rhythm problems. It is generally reserved for life-threatening arrhythmias (abnormal heart rhythms) or those that occur during anesthesia. Specific conditions it treats include fast heart rates coming from the upper chambers of the heart (supraventricular tachycardia), certain arrhythmias caused by digitalis toxicity, dangerous ventricular rhythms that haven't responded to other treatments, and fast heart rates caused by excess adrenaline-like substances during surgery.

Oats has been studied for:

  • Stroke studied, not established Oats has been studied for this. Natural Medicines rates the evidence: Insufficient Reliable Evidence To Rate Read what the research shows

    Oats for stroke

    It is unclear if oral oats are beneficial for reducing the risk of stroke.

Effectiveness ratings and the research summaries above are the verbatim record from the Natural Medicines database, which grades evidence from “Effective” down to “Insufficient Reliable Evidence To Rate”. A rating below the top of that scale means researchers have looked at it — not that it works, and never that it can stand in for a prescribed medicine. Do not stop or replace Propranolol on your own; if you are taking Oats for the same health topic, tell your prescriber, especially if the medicine is being adjusted to a target.

Everything else you take

See Every Supplement That Interacts With Propranolol

This page covers Oats only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Propranolol page lists 236 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), American Hellebore (major), American Mistletoe (major), Indian Snakeroot (major) and Tyramine (major).

By severity: 5 major · 194 moderate · 37 minor.

From our pharmacist’s overview on the Propranolol page

“Propranolol (Inderal) slows the heart and lowers blood pressure, which is exactly why its 236-ingredient interaction list deserves genuine care. Five entries rate major, and those are the ones to understand first.”

Reviewed by 2 · Jul 18, 2026

Open the Propranolol interaction page

One more smart check

Taking Oats as Part of a Dietary Supplement Product? Check It for Interactions

We hold 2,183 real supplement products containing Oats, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Oats. Even though Oats itself has no known interaction with Propranolol, another ingredient on your label might. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Oats and Propranolol Sit Against Everything Else

Out of every supplement and medication people look up on HelloPharmacist, here is where these two land this week — and which way each has been moving.

Supplement Oats
Top 10%

#143 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Propranolol
Top 1%

#11 of 2,830 medications looked up here in the last 7 days

29 days ago today

Position among everything looked up on this site, not a measure of how commonly either one is used or how important it is. A supplement can climb this list because of a news story. It counts every request to the page, automated ones included, and nothing here identifies anyone.

Where does our data come from?
  • Source: the Natural Medicines (TRC Healthcare) clinical database — the evidence-graded professional reference for herb & supplement interactions.
  • Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Oats reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Oats and Propranolol records this page draws on were last updated July 10, 2026.
  • What “no known interaction” means: no documented interaction in the sources above — not a guarantee of safety. Supplements are studied far less than prescription drugs, so we say exactly what the evidence supports, and nothing more.
Data structure & sourcing designed and verified by .
Supplement

About Oats

What is Oats?

  • Lowering cholesterol
  • Heart and digestive health
  • Soothing itchy or irritated skin
  • Blood sugar support
  • Anxiety and stress (oat straw, traditional)

Oats are a well-studied whole grain whose soluble fiber (beta-glucan) can help lower cholesterol and support heart health when eaten regularly. As a food, oats are safe for most people, and colloidal oatmeal is widely used to soothe skin. Evidence for oat straw supplements (for anxiety, energy, or focus) is much weaker.

Avena sativa · Poaceae · Seeds (oat grain), oat bran, and the green tops/straw (oat straw) · Oatmeal and whole grains, oat bran, colloidal oatmeal (topical), capsules, tinctures, and teas (oat straw)

An interaction check asks whether these two react with each other — it does not ask whether Oats is a good idea for someone in your situation. Here is what our Oats record says about it on its own.

Oats: dosing

There is no single standardized dose for oats, and the right amount depends on the form and your goal. For cholesterol benefits, public health guidance generally points to getting a few grams of oat beta-glucan per day from foods like oatmeal and oat bran, spread across meals.For supplements, teas, or oat straw products, there is no well-established dose, so follow the directions on the product label. Topical colloidal oatmeal products should be used as directed on the package.

From our Oats monograph — the full record covers uses, side effects and every documented interaction.

Read the full Oats monograph & all interactions
Medication

About Propranolol (Cardiovascular)

What Is Propranolol (Cardiovascular) Used For?

Brand names: Inderal LA, Inderal, Angilol, Syprol, Inderal Injection, Half-Inderal LA, Bedranol SR, Half Beta Prograne, Beta Prograne, Lopranol LA, Slo-Pro, InnoPran XL

This intravenous (IV) form of propranolol is used in hospital or clinical settings to treat dangerous heart rhythm problems. It is generally reserved for life-threatening arrhythmias (abnormal heart rhythms) or those that occur during anesthesia.

Specific conditions it treats include fast heart rates coming from the upper chambers of the heart (supraventricular tachycardia), certain arrhythmias caused by digitalis toxicity, dangerous ventricular rhythms that haven't responded to other treatments, and fast heart rates caused by excess adrenaline-like substances during surgery.

See full Propranolol (Cardiovascular) drug information
Keep checking

Other Drugs & Oats

Browse every other medication we’ve checked against Oats — both the ones with a known interaction and the ones without. Select any drug for the full detail.

0Major
86Moderate
0Minor
2,743No known interaction
86 Moderate 2,743 No interaction
Moderate

86 interactions

Showing 60 of 86 moderate interactions — see all 86 on the Oats page.

No interaction 2,743 drugs checked — show the list

We also checked Oats against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,743 medications checked with no known interaction — see the full Oats list.

See the full Oats interactions page
See every supplement checked against Propranolol, ranked by severity
Evidence & sources

Oats References

The 13 references that drive our Oats monograph and interaction data, from the evidence-graded Natural Medicines (TRC Healthcare) database. Citations with a link open the study on PubMed or the publisher’s site.

  1. Cooper SG, Tracey EJ. Small-bowel obstruction caused by oat-bran bezoar. N Engl J Med 1989;320:1148-9. DOI
  2. Pick ME, Hawrysh ZJ, Gee MI, et al. Oat bran concentrate bread products improve long-term control of diabetes: a pilot study. J Am Diet Assoc 1996;96:1254-61. PubMed
  3. Braaten JT, Scott FW, Wood PJ, et al. High beta-glucan oat bran and oat gum reduce postprandial blood glucose and insulin in subjects with and without type 2 diabetes. Diabet Med 1994;11:312-8.
  4. Rosario PG, Gerst PH, Prakash K, Albu E. Dentureless distention: oat bran bezoars cause obstruction. J Am Geriatr Soc 1990;38:608. PubMed
  5. Food and Drug Administration. Food labeling: health claims: oats and coronary heart disease. Fed Regist 1996;61:296-313.
  6. Foulke J. FDA Allows Whole Oat Foods To Make Health Claim on Reducing the Risk of Heart Disease. FDA Talk Paper. 1997. Available at: http://www.fda.gov/bbs/topics/ANSWERS/ANS00782.html.
  7. Chandalia M, Garg A, Lutjohann D, et al. Beneficial effects of high dietary fiber intake in patients with type 2 diabetes mellitus. N Engl J Med 2000;342:1392-8. PubMed
  8. Lembo A, Camilleri M. Chronic constipation. N Engl J Med 2003;349:1360-8. . PubMed
  9. De Paz Arranz S, Perez Montero A, Remon LZ, Molero MI. Allergic contact urticaria to oatmeal. Allergy 2002;57:1215. . PubMed
  10. Delgado G, Kleber ME, Krämer BK, et al. Dietary intervention with oatmeal in patients with uncontrolled type 2 diabetes mellitus - A crossover study. Exp Clin Endocrinol Diabetes. 2019;127(9):623-629. PubMed
  11. Sobhan M, Hojati M, Vafaie SY, Ahmadimoghaddam D, Mohammadi Y, Mehrpooya M. The efficacy of colloidal oatmeal cream 1% as add-on therapy in the management of chronic irritant hand eczema: A double-blind study. Clin Cosmet Investig Dermatol. 2020;13:241-25
  12. Hou Q, Li Y, Li L, Cheng G, Sun X, Li S, Tian H. The metabolic effects of oats intake in patients with type 2 diabetes: A systematic review and meta-analysis. Nutrients. 2015;7(12):10369-87. PubMed
  13. González-Afonso M, Cañas JA, Sastre B, et al. A Case of Anaphylaxis After Ingestion of Oats: Research Into New Allergens. J Investig Allergol Clin Immunol 2022;32(6):506-508. PubMed

Medication overviews come from MedlinePlus (NIH); supplement label data from the NIH Dietary Supplement Label Database. Content is written and reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

Pharmacist Counseling Corner

Taking Oats and Propranolol Together: Common Questions

Is it safe to take Oats with Propranolol?
We do not list a known interaction between Oats and Propranolol. That does not guarantee the combination is risk-free, so confirm with your pharmacist or doctor — especially if you take other medications or have a health condition.
Are Oats and Propranolol used for the same thing?
They overlap in purpose, which usually means the real question is whether you need both rather than whether they are safe together. This page lists the shared uses and how strong the evidence is for Oats in each. That is a conversation for your prescriber, especially if Propranolol is being adjusted to a target.
How was the Oats and Propranolol combination checked?
Interactions in our licensed database are recorded against drug classes. Propranolol is filed under 9 classifications, and Oats has documented interactions with 2 drug classes — none of Propranolol's classifications are among them. A medication can belong to classes beyond those recorded in our dataset, so this describes how the check was run rather than guaranteeing safety.
Does Oats interact with any other medications?
Yes. Oats has 86 documented drug interactions in our database — Propranolol is simply not one of them. If you take anything else, it is worth checking each one; they are all listed on this page.
Does Propranolol interact with any supplements?
Yes. Propranolol has documented interactions with 236 supplements in our database — Oats is not one of them. The Propranolol interaction page linked on this page lists every one, ranked by severity.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Where next

Keep Exploring

Oats monograph Uses, safety profile, and every drug interaction in one place Propranolol (Cardiovascular) drug information The full plain-English guide to this medication Propranolol supplement interactions Every supplement checked against Propranolol, ranked by severity Supplement interaction checker Check any supplement or product against your medications Browse medications A–Z Every drug we’ve checked against herbs & supplements References The 13 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Propranolol and Oats?

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This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.