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Dietary supplement

South American Purple Corn 550 mg Ingredients & Drug Interactions

by Solgar

South American Purple Corn 550 mg label
See full label image
Capsule Category: Botanical
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking South American Purple Corn 550 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

South American Purple Corn 550 mg is a dietary supplement by Solgar with 1 active ingredient. Its ingredients are commonly taken for urinary tract and bladder problems, mild fluid retention (diuretic), kidney and prostate concerns.Based on those ingredients, 290 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Purple Corn 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 South American Purple Corn 550 mg by Solgar

Ask about any prescription or over-the-counter medication and we check it for interactions with South American Purple Corn 550 mg by Solgar — and tell you which ingredient is responsible.

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Computed from our clinical databases

HelloPharmacist Scorecard of South American Purple Corn 550 mg by Solgar

Four independent checks of what is known — a summary of the available information, not a grade of the product itself.

Evidence for Intended Use
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

The stated purpose hasn't been mapped to our evidence data yet.

Why this rating?
  • We haven't mapped this product's purpose to our evidence data yet — it'll be graded on the next content refresh.
Ingredient Transparency
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.
Known Interaction Concern
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 — Corn Silk.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; diabetes medications.
  • For scale: 290 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.
Safety Information
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.

HelloPharmacist summaryFully disclosed formula with no assessable stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Mar 24, 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 South American Purple Corn 550 mg, straight from the product label.

Brand Solgar
Barcode (UPC) 033984023123
Net contents 60 Vegetable Capsule(s)
Market status On market
Date entered into DSLD Mar 24, 2020
DSLD ID 214903
Product type Botanical
Supplement form Capsule
Dietary claims / uses All Other
Intended target group(s) Vegetarian, Adult (18 - 50 Years), Dairy Free, Sugar Free
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 South American Purple Corn 550 mg by Solgar, 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 Vegetarian Capsule(s)
Maximum serving Sizes:
1 Vegetarian Capsule(s)
UPC/BARCODE
033984023123
IngredientAmount% DV
Total Carbohydrates1 Gram(s)1%
Purple Corn extract550 mg--

Other ingredients: Vegetable Cellulose, Vegetable Magnesium Stearate, Grapeskin, Silica, Vegetable Glycerin, Titanium Dioxide

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.
Formulation

Solgar's South American Purple Corn 550 mg Vegetable Capsules with naturally occurring C3G (Cyanidin-3-B-Glucoside) are free of yeast, wheat, soy and dairy products and are formulated without the use of artificial preservatives, flavors or colors.

An extract with naturally occurring C3G

Suitable for vegetarians

Sugar and salt free

Storage

To assure freshness and potency, store at room temperature 59 degrees-86 degrees F (15 degrees-30 degrees C). Store away from heat, light and moisture.

Precautions

Do not use if outer bottle seal is missing, torn or damaged in any way.

If you are pregnant, nursing, taking any medication or have a medical condition, please consult your healthcare practitioner before taking any dietary supplement.

Keep out of reach of children.

General Statements

Solgar since 1947

FDA Statement of Identity

Dietary Supplement

Suggested/Recommended/Usage/Directions

Suggested Use: As a dietary supplement for adults, take one (1) vegetable capsule daily, preferably at mealtime, or as directed by a healthcare practitioner.

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

See for yourself

South American Purple Corn 550 mg by Solgar label

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

South American Purple Corn 550 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 South American Purple Corn 550 mg by Solgar

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

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

Purple Corn extract

Interacts with
290 drugs
550 mg per serving Form: Anthocyanins, total Phenols

Corn silk is a traditional herbal remedy taken as a tea or extract, mostly for urinary and mild fluid-related complaints. High-quality human evidence...

Purple Corn extract monograph & interactions

Other (inactive) ingredients: Vegetable Cellulose, Vegetable Magnesium Stearate, Grapeskin, Silica, Vegetable Glycerin, Titanium Dioxide. These complete the product’s ingredient list but are not active constituents.

Interaction report

South American Purple Corn 550 mg by Solgar Drug Interactions

South American Purple Corn 550 mg contains a single active ingredient, and it has known interactions with 290 medications. Here’s the picture, then you can look up your own drug.

Want to check YOUR meds against South American Purple Corn 550 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
290Drugs
290 Moderate

Ingredients driving the most interactions

Purple Corn extract 290

Individual Drug Interactions

The ingredients in South American Purple Corn 550 mg interact with 290 drugs. Click any drug to see the details.

1 of the 1 ingredient in South American Purple Corn 550 mg interact with drugs. Each result below shows which ingredient is responsible. Purple Corn extract

Each ingredient & the kinds of drugs it affects

For each ingredient in South American Purple Corn 550 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.

Purple Corn extract5 drug types · 290 drugs

Antidiabetes Drugs

Theoretically, taking corn silk with antidiabetes drugs might increase the risk of hypoglycemia.
Animal research in diabetic mice shows that taking corn silk extract lowers fasting blood glucose levels.

Likelihood Possible Evidence D
Antihypertensive Drugs

Taking corn silk extract with antihypertensive drugs might increase the risk of hypotension.
Clinical research in both hypertensive and normotensive adults shows that taking corn silk extract lowers systolic and diastolic blood pressure.

Likelihood Possible Evidence D
Corticosteroids

Taking corn silk with corticosteroids might increase the risk of hypokalemia.
Clinical research shows that taking corn silk extract increases the urinary excretion of potassium.

Likelihood Possible Evidence D
Diuretic Drugs

Taking corn silk with diuretic drugs might increase the risk of adverse effects such as hyponatremia and hypokalemia.
Clinical research shows that taking corn silk extract increases urine volume and promotes the urinary excretion of sodium and potassium. Some patients may require electrolyte supplementation.

Likelihood Possible Evidence D
Warfarin (Coumadin)

Theoretically, suddenly stopping, starting, or changing corn silk treatment may alter the effects of warfarin.
Corn silk contains vitamin K. Individuals taking warfarin should consume a consistent daily amount of corn silk to maintain consistent anticoagulation.

Likelihood Likely Evidence D
Purple Corn extract full monograph & interactions
The maker

Brand information

Manufacturer and brand details for South American Purple Corn 550 mg, from the product label.

Solgar

See all Solgar products
Name
Solgar Vitamin and Herb
Street Address
500 Willow Tree Road
City
Leonia
State
N.J.
ZipCode
07605
Phone Number
1-877-765-4274
Web Address
www.solgar.com
Pharmacist Counseling Corner

South American Purple Corn 550 mg by Solgar: Common Questions

Does South American Purple Corn 550 mg by Solgar interact with any medications?
Yes. Based on its ingredients, South American Purple Corn 550 mg has a known interaction with 290 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
South American Purple Corn 550 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.

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

Not sure if South American Purple Corn 550 mg is safe with your meds?

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Ask a pharmacist

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.

South American Purple Corn 550 mg label
Go deeper

The Full Monographs Behind South American Purple Corn 550 mg’s Ingredients

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

Herb & supplement monograph

Corn Silk

Interacts with 290 drugs

Corn silk is a traditional herbal remedy taken as a tea or extract, mostly for urinary and mild fluid-related complaints. High-quality human evidence for these uses is limited, so it should...

Read the full Corn Silk monograph →
Sources

Sources & How We Checked

South American Purple Corn 550 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 4 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.

Corn Silk 4 references
  1. Newall CA, Anderson LA, Philpson JD. Herbal Medicine: A Guide for Healthcare Professionals. London, UK: The Pharmaceutical Press, 1996.
  2. Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
  3. George GO, Idu FK. Corn silk aqueous extracts and intraocular pressure of systemic and non-systemic hypertensive subjects. Clin Exp Optom. 2015 Mar;98(2):138-49. PubMed
  4. Sheng L, Chen Q, Di L, Li N. Evaluation of anti-diabetic potential of corn silk in high-fat diet/streptozotocin- induced type 2 diabetes mice model. Endocr Metab Immune Disord Drug Targets. 2020. PubMed

See these in context on the Corn Silk 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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