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Dietary supplement

Rehmannia Extract Ingredients & Drug Interactions

by BulkSupplements.com

Rehmannia Extract label
See full label image
Powder 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 Rehmannia 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

Rehmannia Extract is a dietary supplement by BulkSupplements.com with 1 active ingredient. Its ingredients are commonly taken for kidney and adrenal support, anemia and blood building (traditional), inflammatory conditions.Based on those ingredients, 258 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Rehmannia extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Rehmannia Extract by BulkSupplements.com

Ask about any prescription or over-the-counter medication and we check it for interactions with Rehmannia Extract by BulkSupplements.com — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of Rehmannia Extract by BulkSupplements.com

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: Rehmannia extract, a powder made from the rehmannia root plant. Rehmannia has been used in traditional medicine for centuries.

The product contains no inactive ingredients listed.

Does it work?

Moderate 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 Rehmannia's overall clinical evidence instead.

Moderate

Some clinical evidence supports Rehmannia 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: Chronic kidney disease (CKD) — rated "Possibly Effective" (Natural Medicines).

The evidence for rehmannia is mixed. It's rated possibly effective for chronic kidney disease.

For other uses—aplastic anemia, atopic disease (conditions like eczema), osteoporosis, diabetes, and diabetic kidney disease—we don't have enough reliable evidence to rate whether it works. If you're considering it for one of these other conditions, talk with your pharmacist about what the current research actually shows.

The evidence, ingredient by ingredient Rehmannia

How safe is it?

Some data gaps
Safety Information · database check
Some gaps

Safety data exists for these ingredients, but with some important gaps.

Why this rating?
  • We hold adverse-effect (side-effect) data for 0 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.

Rehmannia is used in traditional medicine, but human safety data are limited and product quality varies. We don't have enough information to say it's safe during pregnancy—the safety data advises against use while pregnant.

The same goes for breastfeeding: there isn't enough data to know either way, so it's best avoided. If you're pregnant, breastfeeding, or planning either, talk with your doctor or pharmacist before taking this supplement.

Side effects, ingredient by ingredient Rehmannia

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 — Rehmannia.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: diabetes medications.
  • For scale: 258 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 any blood pressure medications (antihypertensives) and diabetes drugs you're on—both are at moderate risk of interaction. 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 some supporting evidence behind its ingredients' uses. Moderate medication interactions have been identified, and some safety-information gaps remain.

Rehmannia extract may help with chronic kidney disease, but the evidence for most other uses is unclear. If you take blood pressure or diabetes medication, you'll need to check your specific drugs before starting this.

Talk with your pharmacist about whether it's right for you and whether it'll interact with what you're already taking.

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 Apr 23, 2024.

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 Rehmannia Extract, straight from the product label.

Brand BulkSupplements.com
Barcode (UPC) X001B9WSKZ
Net contents 1 Kilogram(s); 35.3 Ounce(s)
Market status On market
Date entered into DSLD Apr 23, 2024
DSLD ID 311958
Product type Botanical
Supplement form Powder
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Gluten Free, Dairy 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 Rehmannia Extract by BulkSupplements.com, 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:
500 mg
Maximum serving Sizes:
500 mg
Servings per container
2000
UPC/BARCODE
X001B9WSKZ
IngredientAmount% DV
Rehmannia extract500 mg--

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.
Brand IP Statement(s)

BulkSupplements.com Clean & Pure Bulk Supplements

Formulation

Color may vary

Free Of: Added sugar, soy, dairy, yeast, gluten, additives

FDA Disclaimer Statement

Warning: This product is not intended to diagnose, treat, cure, or prevent any disease.

Precautions

Always consult a physician before taking any dietary supplement.

Keep out of reach of children.

Suggested/Recommended/Usage/Directions

Suggested Use: As a dietary supplement, take 500 mg (1/5 tsp) one to three times daily or as directed by a physician.

Storage

Contents are sold by weight, not volume. Settling may occur. Store in a dry, cool place

General Statements

Use an accurate milligram scale. New

Formula

Rehmannia root powder

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

See for yourself

Rehmannia Extract by BulkSupplements.com label

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

Rehmannia 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 Rehmannia Extract by BulkSupplements.com

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

Serving size500 mg Dosage formPowder Servings per container2000 Amounts shown are per serving.

Rehmannia extract

Interacts with
258 drugs
500 mg per serving

Rehmannia is a root used for centuries in Traditional Chinese Medicine, often to 'tonify' the kidneys and support energy or blood health. Human eviden...

Rehmannia extract monograph & interactions
Interaction report

Rehmannia Extract by BulkSupplements.com Drug Interactions

Want to check YOUR meds against Rehmannia 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
258Drugs
258 Moderate

Ingredients driving the most interactions

Rehmannia extract 258

Individual Drug Interactions

The ingredients in Rehmannia Extract interact with 258 drugs. Click any drug to see the details.

1 of the 1 ingredient in Rehmannia Extract interact with drugs. Each result below shows which ingredient is responsible. Rehmannia extract

Each ingredient & the kinds of drugs it affects

For each ingredient in Rehmannia 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.

Rehmannia extract2 drug types · 258 drugs

Antidiabetes Drugs

Theoretically, rehmannia might increase the risk of hypoglycemia when taken with antidiabetes drugs.
Animal research shows that rehmannia may have hypoglycemic effects.

Likelihood Possible Evidence D
Antihypertensive Drugs

Theoretically, rehmannia might increase the risk of hypotension when taken with antihypertensive drugs.
Animal research shows that rehmannia may have hypotensive effects. Laboratory research shows that formulations of dried and processed rehmannia root inhibit angiotensin-converting enzyme (ACE).

Likelihood Possible Evidence D
Rehmannia extract full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Rehmannia Extract, from the product label.

BulkSupplements.com

See all BulkSupplements.com products
Name
BulkSupplements.com
Street Address
7511 Eastgate Rd
City
Henderson
State
NV
ZipCode
89011
Web Address
BulkSupplements.com
Pharmacist Counseling Corner

Rehmannia Extract by BulkSupplements.com: Common Questions

Does Rehmannia Extract by BulkSupplements.com interact with any medications?
Yes. Based on its ingredients, Rehmannia Extract has a known interaction with 258 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Rehmannia 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.
Can I take rehmannia if I'm on blood pressure medication?
Not without checking first. Rehmannia may lower blood pressure on its own, and combining it with your blood pressure drug could theoretically drop your pressure too low. Use the medication checker on this page to verify your specific drug, then talk with your pharmacist.
Can I take this if I have diabetes or take diabetes medication?
You'll need to verify your specific diabetes drug first. Animal research suggests rehmannia may lower blood sugar, so combining it with your medication could theoretically increase the risk of low blood sugar. Check your exact medication using the tool on this page, then speak with your pharmacist.
Is rehmannia safe during pregnancy or breastfeeding?
The safety data advises against it during pregnancy because there isn't enough information. The same applies to breastfeeding. If you're pregnant, breastfeeding, or planning either, talk with your doctor or pharmacist before taking this supplement.
What is rehmannia actually used for?
Rehmannia is rated possibly effective for chronic kidney disease. For other uses like osteoporosis, eczema, anemia, diabetes, and diabetic kidney disease, we don't have enough reliable evidence to say whether it works. Your pharmacist can discuss what the research really shows for your specific interest.
How much human safety data exists for rehmannia?
It's traditionally been used for a long time, but human safety data are limited. Product quality also varies between brands. Because of that, it's important to talk with your pharmacist before starting it, especially if you take other medications.

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

Not sure if Rehmannia 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.

Rehmannia Extract label
Go deeper

The Full Monographs Behind Rehmannia Extract’s Ingredients

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

Herb & supplement monograph

Rehmannia

Interacts with 258 drugs

Rehmannia is a root used for centuries in Traditional Chinese Medicine, often to 'tonify' the kidneys and support energy or blood health. Human evidence for most modern uses is limited, so i...

Read the full Rehmannia monograph →
Sources

Sources & How We Checked

Rehmannia 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 3 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.

Rehmannia 3 references
  1. Zhang R, Zhou J, Jia Z, et al. Hypoglycemic effect of Rehmannia glutinosa oligosaccharide in hyperglycemic and alloxan-induced diabetic rats and its mechanism. J Ethnopharmacol 2004;90:39-43. PubMed
  2. Zhang RX, Li MX, Jia ZP. Rehmannia glutinosa: review of botany, chemistry and pharmacology. J Ethnopharmacol 2008;117(2):199-214. PubMed
  3. Chao CH, Hsu JL, Chen MF, et al. Anti-hypertensive effects of Radix Rehmanniae and its active ingredients. Nat Prod Res. 2020;34(11):1547-1552.

See these in context on the Rehmannia 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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