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Dietary supplement

Oat Straw / Seed 450 mg 4:1 Extract Ingredients & Drug Interactions

by TerraVita Premium Collection

Oat Straw / Seed 450 mg 4:1 Extract label
See full label image
Capsule Category: Botanical
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 30, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Oat Straw / Seed 450 mg 4:1 Extract against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Moderate

Oat Straw / Seed 450 mg 4:1 Extract is a dietary supplement by TerraVita Premium Collection with 1 active ingredient. Its ingredients are commonly taken for lowering cholesterol, heart and digestive health, soothing itchy or irritated skin.Based on those ingredients, 86 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Oat Extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Oat Straw / Seed 450 mg 4:1 Extract by TerraVita Premium Collection

Ask about any prescription or over-the-counter medication and we check it for interactions with Oat Straw / Seed 450 mg 4:1 Extract by TerraVita Premium Collection — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Oat Straw / Seed 450 mg 4:1 Extract by TerraVita Premium Collection

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Aug 27, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

This supplement contains a single active ingredient: an oat extract (Oat Straw / Seed 450 mg in a 4:1 concentrate form). Oats are a whole grain rich in fiber and compounds that support heart and cholesterol health.

The capsule itself is made from gelatin and water.

Does it work?

Strong evidence
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed

This product doesn't appear to be marketed for a specific use, so we graded Oats's overall clinical evidence instead.

Strong

Strong clinical evidence supports Oats for:

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.
  • Since the label doesn't commit to one use, we graded the ingredient's overall clinical evidence instead.
  • On file: Coronary heart disease (CHD) — rated "Likely Effective" (Natural Medicines).
  • On file: Dyslipidemia — rated "Likely Effective" (Natural Medicines).
  • On file: Diabetes — rated "Possibly Effective" (Natural Medicines).
  • On file: Gastric cancer — rated "Possibly Effective" (Natural Medicines).

Oat extract is likely effective for managing dyslipidemia (abnormal cholesterol or triglyceride levels) and supporting coronary heart disease prevention. The evidence supporting these uses is solid based on the data we hold.

The evidence, ingredient by ingredient Oats

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Oats eaten as food are generally well tolerated and safe during pregnancy and breastfeeding, though concentrated oat supplements are less studied in these situations. As an oral supplement, oats most commonly cause abdominal bloating, flatulence, and an unpleasant taste—effects that usually fade as your body adjusts.

These happen because oats are high in fiber; ramping up your dose slowly can minimize discomfort. People with swallowing difficulties or conditions that slow the movement of food through the small intestine should talk to their doctor first, since oat products could theoretically cause intestinal blockage in those cases.

Side effects, ingredient by ingredient Oats

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Oats.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: diabetes medications.
  • For scale: 86 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Check before starting if you take insulin or diabetes medications (such as metformin, sulfonylureas, or GLP-1 agonists). Oat extract may increase the risk of low blood sugar when combined with these drugs.

Your doctor or pharmacist can help you decide if you need dose adjustments.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with strong clinical evidence behind its ingredients' uses. Moderate medication interactions have been identified, and safety information is well characterized.

Oat extract may help with cholesterol and heart health, but if you take insulin or diabetes medications, you need to check with your doctor or pharmacist before starting it—your dose may need adjusting. Fiber-related bloating and gas are common at first but usually settle down.

Talk it over with your own healthcare provider to make sure it's right for your situation.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Mar 22, 2023.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Oat Straw / Seed 450 mg 4:1 Extract, straight from the product label.

Brand TerraVita Premium Collection
Barcode (UPC) 064435209773
Net contents 100 Capsule(s)
Market status On market
Date entered into DSLD Mar 22, 2023
DSLD ID 289385
Product type Botanical
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years)
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Oat Straw / Seed 450 mg 4:1 Extract by TerraVita Premium Collection, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
1 Capsule(s)
Maximum serving Sizes:
1 Capsule(s)
Servings per container
100
UPC/BARCODE
064435209773
IngredientAmount% DV
Oat Extract450 mg--

Other ingredients: Gelatin, Water

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
FDA Statement of Identity

A Dietary Supplement

Brand IP Statement(s)

Copyright 2017 TerraVita - Distributed by ZooScape LLC, All Rights Reserved.

Suggested/Recommended/Usage/Directions

Directions Take 1 capsule, 3 times daily, with meals.

General Statements

TerraVita is an exclusive line of premium natural products that use the finest, purest and most potent ingredients in the world. TerraVita's hallmarks are the highest possible standards of purity, potency, stability and freshness. All products are prepared with the greatest quality control, from raw materials through the entire manufacturing process, right up to the moment your product is sealed for freshness and shipped to you.

Please recycle!

FDA Disclaimer Statement

Statements not evaluated by FDA. Product not intended to diagnose, treat, cure, or prevent any disease.

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Oat Straw / Seed 450 mg 4:1 Extract by TerraVita Premium Collection label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Oat Straw / Seed 450 mg 4:1 Extract label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in Oat Straw / Seed 450 mg 4:1 Extract by TerraVita Premium Collection

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size1 Capsule(s) Dosage formCapsule Servings per container100 Amounts shown are per serving.

Oat Extract

Interacts with
86 drugs
450 mg per serving Form: Oat seed extract, Oat Straw extract

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 f...

Oat Extract monograph & interactions

Other (inactive) ingredients: Gelatin, Water. These complete the product’s ingredient list but are not active constituents.

Interaction report

Oat Straw / Seed 450 mg 4:1 Extract by TerraVita Premium Collection Drug Interactions

Want to check YOUR meds against Oat Straw / Seed 450 mg 4:1 Extract?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

 Go to the checker
86Drugs
86 Moderate

Ingredients driving the most interactions

Oat Extract 86

Individual Drug Interactions

The ingredients in Oat Straw / Seed 450 mg 4:1 Extract interact with 86 drugs. Click any drug to see the details.

1 of the 1 ingredient in Oat Straw / Seed 450 mg 4:1 Extract interact with drugs. Each result below shows which ingredient is responsible. Oat Extract

Each ingredient & the kinds of drugs it affects

For each ingredient in Oat Straw / Seed 450 mg 4:1 Extract with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

Oat Extract2 drug types · 86 drugs

Antidiabetes Drugs

Theoretically, oats may have additive effects with antidiabetic agents and might increase the risk of hypoglycemia.
Consuming oats can decrease blood glucose in patients with diabetes. In those who require insulin, taking oats 100 grams daily for 2 days reduces the insulin dose required to achieve metabolic control.

Likelihood Possible Evidence D
Insulin

Concomitant use of oats and insulin might increase the risk of hypoglycemia.
In patients with insulin-dependent type 2 diabetes, taking oats 100 grams daily for 2 days reduces the insulin dose required to achieve metabolic control.

Likelihood Possible Evidence B
Oat Extract full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Oat Straw / Seed 450 mg 4:1 Extract, from the product label.

TerraVita Premium Collection

See all TerraVita Premium Collection products
Name
TerraVita Fine Whole Herbs
City
Brampton
State
Ontario
Pharmacist Counseling Corner

Oat Straw / Seed 450 mg 4:1 Extract by TerraVita Premium Collection: Common Questions

Does Oat Straw / Seed 450 mg 4:1 Extract by TerraVita Premium Collection interact with any medications?
Yes. Based on its ingredients, Oat Straw / Seed 450 mg 4:1 Extract has a known interaction with 86 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Oat Straw / Seed 450 mg 4:1 Extract contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Will this supplement lower my blood sugar too much if I'm already on diabetes medication?
Oat extract can work alongside your diabetes drug or insulin to lower blood sugar, which might push your level too low. That's why checking with your doctor or pharmacist first is important—they may adjust your medication dose. Research shows oats alone can reduce how much insulin your body needs, so the combination needs monitoring.
What side effects should I expect?
Bloating, gas, and abdominal distention are the most common effects, especially when you first start. These usually happen because oats add fiber to your diet. Starting with a lower dose and building up slowly, plus drinking plenty of water, can help. Most people find these effects fade as their body adapts.
Is this safe to take while pregnant or breastfeeding?
Oats eaten as regular food are generally considered safe in pregnancy and while breastfeeding. This supplement is a concentrated extract, so the safety data is thinner. Talk with your doctor or midwife about whether this specific form is right for you.
Can oat extract really help my cholesterol?
Yes—oat extract is likely effective for managing abnormal cholesterol and triglyceride levels and for heart health. The evidence supporting these uses is solid.
I have trouble swallowing. Is this safe for me?
People with swallowing difficulties or conditions that slow digestion should check with their doctor first. Because oats are high in fiber, there's a theoretical risk of intestinal blockage in those situations.

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

Not sure if Oat Straw / Seed 450 mg 4:1 Extract is safe with your meds?

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Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Oat Straw / Seed 450 mg 4:1 Extract label
Go deeper

The Full Monographs Behind Oat Straw / Seed 450 mg 4:1 Extract’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Oats

Interacts with 86 drugs

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...

Read the full Oats monograph →
Sources

Sources & How We Checked

Oat Straw / Seed 450 mg 4:1 Extract's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 13 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Oats 13 references
  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

See these in context on the Oats monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

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