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Dietary supplement

Full Spectrum Sheep Sorrel 400 mg Ingredients & Drug Interactions

by Swanson Premium Brand

Full Spectrum Sheep Sorrel 400 mg 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 Full Spectrum Sheep Sorrel 400 mg 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

Full Spectrum Sheep Sorrel 400 mg is a dietary supplement by Swanson Premium Brand with 1 active ingredient. Its ingredients are commonly taken for sinus and respiratory congestion, digestive upset, fever.Based on those ingredients, 169 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Sheep Sorrel. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Full Spectrum Sheep Sorrel 400 mg by Swanson Premium Brand

Ask about any prescription or over-the-counter medication and we check it for interactions with Full Spectrum Sheep Sorrel 400 mg by Swanson Premium Brand — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Full Spectrum Sheep Sorrel 400 mg by Swanson Premium Brand

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 Jul 11, 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 product contains one active ingredient: sheep sorrel extract, 400 mg per capsule. Sheep sorrel is a plant used in herbal medicine, though its effectiveness for specific conditions hasn't been well established in clinical trials.

The capsule also holds inactive ingredients (gelatin, magnesium stearate, silica, and rice flour) that help form and preserve the supplement.

Does it work?

Couldn't assess
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
Not assessable

This is a single-ingredient Sorrel product and its label doesn't state a use — see Sorrel's own graded uses on its monograph.

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.

The evidence supporting sheep sorrel for bronchitis, breast cancer, and rhinosinusitis (sinus inflammation) is insufficient—we don't have reliable data showing it works for any of these. If you're considering it for a specific health concern, talk with your pharmacist or doctor about whether the evidence supports its use.

The evidence, ingredient by ingredient Sorrel

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.

Sheep sorrel is generally well tolerated when eaten as a food in normal amounts, but concentrated doses raise concerns. The plant contains oxalates, compounds that can accumulate in your body and potentially damage your kidneys, especially with high or repeated doses.

A case of kidney inflammation has been reported in a child who ate wild sorrel; symptoms improved with fluids and electrolyte replacement. Some people may also have allergic reactions to sorrel pollen, especially if they're sensitive to weed pollen (cross-sensitivity occurs in up to 19% of people with weed allergies).

When sorrel is combined with other herbs, nausea and an unpleasant aftertaste have been reported.

Side effects, ingredient by ingredient Sorrel

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 — Sorrel.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs.
  • For scale: 169 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.

Before taking this product, check whether you use blood thinners or antiplatelet drugs (like warfarin, apixaban, or aspirin), because sorrel may increase their effects and side effects. Also check if you take any medications transported by OATP proteins—a large group that includes fexofenadine and many others—because sorrel may reduce how well they work by lowering their absorption.

Use the search tool on this page to verify your exact medications.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with no assessable stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

Sheep sorrel may appeal to those interested in herbal support, but it's not proven for any specific condition and carries real interaction risks with blood thinners and a large group of other medications. If you take prescription drugs—especially anticoagulants—check them against the interaction tool below before starting.

The oxalate content and kidney concerns also mean it's not ideal for regular or high-dose use.

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 Jan 25, 2020.

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 Full Spectrum Sheep Sorrel 400 mg, straight from the product label.

Brand Swanson Premium Brand
Barcode (UPC) 087614112831
Net contents 60 Capsule(s)
Market status On market
Date entered into DSLD Jan 25, 2020
DSLD ID 212604
Product type Botanical
Supplement form Capsule
Dietary claims / uses All Other
Intended target group(s) Adult (18 - 50 Years), Women (not pregnant or lactating)
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 Full Spectrum Sheep Sorrel 400 mg by Swanson Premium Brand, 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)
UPC/BARCODE
087614112831
IngredientAmount% DV
Sheep Sorrel400 mg--

Other ingredients: Gelatin, Magnesium Stearate, Silica, Rice Flour

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.
General Statements

Bringing wellness to the world since 1969

To reorder, call toll free 1-800-437-4148 or visit our website at www.swansonvitamins.com

FDA Statement of Identity

Herbal Supplement

Seals/Symbols

Guaranteed purity & potency

Precautions

Do not use if seal is broken.

Keep out of reach of children.

Warning: Do not take this product if you are pregnant, nursing or if you have or have had kidney stones.

Storage

Store in a cool, dry place.

Suggested/Recommended/Usage/Directions

Suggested Use: As a dietary supplement, take one capsule one to two times per day with water.

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

See for yourself

Full Spectrum Sheep Sorrel 400 mg by Swanson Premium Brand label

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

Full Spectrum Sheep Sorrel 400 mg 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 Full Spectrum Sheep Sorrel 400 mg by Swanson Premium Brand

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

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

Sheep Sorrel

Interacts with
169 drugs
400 mg per serving

Sorrel is a tangy, leafy herb used in cooking and traditional medicine, often for congestion, digestion, and inflammation. Solid human evidence for an...

Sheep Sorrel monograph & interactions

Other (inactive) ingredients: Gelatin, Magnesium Stearate, Silica, Rice Flour. These complete the product’s ingredient list but are not active constituents.

Interaction report

Full Spectrum Sheep Sorrel 400 mg by Swanson Premium Brand Drug Interactions

Want to check YOUR meds against Full Spectrum Sheep Sorrel 400 mg?

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
169Drugs
169 Moderate

Ingredients driving the most interactions

Sheep Sorrel 169

Individual Drug Interactions

The ingredients in Full Spectrum Sheep Sorrel 400 mg interact with 169 drugs. Click any drug to see the details.

1 of the 1 ingredient in Full Spectrum Sheep Sorrel 400 mg interact with drugs. Each result below shows which ingredient is responsible. Sheep Sorrel

Each ingredient & the kinds of drugs it affects

For each ingredient in Full Spectrum Sheep Sorrel 400 mg 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.

Sheep Sorrel3 drug types · 169 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, sorrel might cause additive effects and side effects when used with anticoagulant or antiplatelet drugs.
In vitro, sorrel has been shown to inhibit platelet aggregation. However, this effect has not been reported in humans.

Likelihood Possible Evidence D
Fexofenadine (Allegra)

Sorrel might reduce the effectiveness of fexofenadine by reducing its absorption from the gut.
In vitro research shows that an ethanol extract of sorrel inhibits organic anion-transporting polypeptide 1A2 (OATP1A2), which transports fexofenadine from the intestine into cells. In rats, concomitant administration of sorrel extract with fexofenadine reduces oral absorption of fexofenadine and the area under the plasma concentration-time curve (AUC).

Likelihood Likely Evidence D
Organic Anion-Transporting Polypeptide Substrates (Oatp)

Sorrel might reduce the effectiveness of OATP substrates by reducing their absorption from the gut.
In vitro research shows that sorrel inhibits OATP1A2. Theoretically it may inhibit other OATPs. The OATPs are expressed in the small intestine and liver and transport drugs into cells. Inhibition of OATP may reduce the bioavailability of oral drugs that are substrates of OATP.

Likelihood Possible Evidence D
Sheep Sorrel full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Full Spectrum Sheep Sorrel 400 mg, from the product label.

Swanson Premium Brand

See all Swanson Premium Brand products
Name
Swanson Health Products
City
Fargo
State
ND
ZipCode
58104
Phone Number
1-800-437-4148
Web Address
www.swansonvitamins.com
Pharmacist Counseling Corner

Full Spectrum Sheep Sorrel 400 mg by Swanson Premium Brand: Common Questions

Does Full Spectrum Sheep Sorrel 400 mg by Swanson Premium Brand interact with any medications?
Yes. Based on its ingredients, Full Spectrum Sheep Sorrel 400 mg has a known interaction with 169 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Full Spectrum Sheep Sorrel 400 mg 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.
Can I take sheep sorrel if I'm pregnant or breastfeeding?
The safety data rates sheep sorrel as possibly safe, but medicinal or concentrated amounts haven't been proven safe during pregnancy or nursing. Talk with your doctor or pharmacist before using a concentrated supplement if you're pregnant or breastfeeding.
What are the main side effects I should watch for?
Allergic reactions (sneezing, wheezing) can occur, especially if you're sensitive to weed pollen. High doses or regular use can raise kidney concerns because sorrel contains oxalates, which may build up and cause kidney damage. When combined with other herbs, nausea and an aftertaste have been reported.
Does sheep sorrel actually work for bronchitis, cancer, or sinus problems?
The evidence isn't reliable enough to say. We don't have solid clinical trials showing sheep sorrel works for any of those conditions, so if that's why you're considering it, ask your doctor about proven options.
Why does this product interact with so many medications?
Sorrel blocks a protein transporter (OATP) that your intestines and liver use to move many different drugs into your cells. When sorrel gets in the way, those drugs don't get absorbed well and may not work as intended. That's why the interaction list is long—it's the same mechanism affecting different medication classes.
Is there anything else in this capsule besides sheep sorrel?
The capsule contains gelatin, magnesium stearate, silica, and rice flour—these are inactive ingredients that hold the supplement together. Sheep sorrel extract is the only active ingredient.

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

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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.

Full Spectrum Sheep Sorrel 400 mg label
Go deeper

The Full Monographs Behind Full Spectrum Sheep Sorrel 400 mg’s Ingredients

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

Herb & supplement monograph

Sorrel

Interacts with 169 drugs

Sorrel is a tangy, leafy herb used in cooking and traditional medicine, often for congestion, digestion, and inflammation. Solid human evidence for any health benefit is limited, and its hig...

Read the full Sorrel monograph →
Sources

Sources & How We Checked

Full Spectrum Sheep Sorrel 400 mg'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 8 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.

Sorrel 8 references
  1. Neubauer N, Marz RW. Placebo-controlled, randomized, double-blind, clincal trial with Sinupret sugar coated tablets on the basis of a therapy with antibiotics and decongestant nasal drops in acute sinusitis. Phytomedicine 1994;1:177-81.
  2. Marz RW, Ismail C, Popp MA. Action profile and efficacy of a herbal combination preparation for the treatment of sinusitis. Wien Med Wochenschr 1999;149:202-8.
  3. Zick, S. M., Sen, A., Feng, Y., Green, J., Olatunde, S., and Boon, H. Trial of Essiac to ascertain its effect in women with breast cancer (TEA-BC). J Altern Complement Med 2006;12(10):971-980. PubMed
  4. Sanz, P. and Reig, R. Clinical and pathological findings in fatal plant oxalosis. A review. Am J Forensic Med Pathol. 1992;13(4):342-345. PubMed
  5. Gniazdowska, B., Doroszewska, G., and Doroszewski, W. [Hypersensitivity to weed pollen allergens in the region of Bygdoszcz]. Pneumonol.Alergol.Pol. 1993;61(7-8):367-372.
  6. Selçuk SN, Gülhan B, Düzova A, Teksam Ö. Acute tubulointerstitial nephritis due to large amount of sorrel (Rumex acetosa) intake. Clin Toxicol (Phila) 2015;53(5):497. PubMed
  7. Ahn JH, Kim J, Rehman NU, Kim HJ, Ahn MJ, Chung HJ. Effect of Rumex Acetosa Extract, a Herbal Drug, on the Absorption of Fexofenadine. Pharmaceutics. 2020;12(6):E547. PubMed
  8. Jeong D, Irfan M, Lee DH, Hong SB, Oh JW, Rhee MH. Rumex acetosa modulates platelet function and inhibits thrombus formation in rats. BMC Complement Med Ther. 2020;20(1):98. PubMed

See these in context on the Sorrel 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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