Grass Fed Beef Liver 3,000 mg Ingredients & Drug Interactions
by Dr. Mercola
What is this page for?
First and foremost: checking Grass Fed Beef Liver 3,000 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
Grass Fed Beef Liver 3,000 mg is a dietary supplement by Dr. Mercola with 2 active ingredients. Its ingredients are commonly taken for anemia and low iron, vitamin b12 support, general energy and fatigue.Based on those ingredients, 3 medications have a known interaction with it, the most serious rated minor. The ingredients most likely to interact are Bovine Liver. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Grass Fed Beef Liver 3,000 mg by Dr. Mercola
Ask about any prescription or over-the-counter medication and we check it for interactions with Grass Fed Beef Liver 3,000 mg by Dr. Mercola — and tell you which ingredient is responsible.
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HelloPharmacist Scorecard of Grass Fed Beef Liver 3,000 mg by Dr. Mercola
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.
What’s inside
Full disclosure
This product contains one active ingredient: bovine liver (grass-fed beef liver) at 3,000 mg per serving. Bovine liver is a nutrient-dense organ supplement that naturally delivers vitamin A, iron, and other nutrients found in animal liver tissue.
The capsule also contains several inactive ingredients — hydroxypropyl methylcellulose (the capsule material), rice husk, rice bran extract, gum acacia, and sunflower oil — which are fillers and binders.
Does it work?
Not established
The evidence for liver extract in chronic fatigue syndrome (CFS) is rated as possibly ineffective in our data, meaning it's not likely to help with that condition. For hepatitis C, there isn't enough reliable evidence yet to say whether it works or doesn't.
If you're considering this product for a specific health concern, talk with your pharmacist or doctor about what the current evidence actually supports.
How safe is it?
Well-documented data
No adverse reactions have been reported in the data we hold, but a thorough safety evaluation hasn't been done either. The bigger concerns are the high levels of vitamin A and iron that liver products can deliver — vitamin A in particular can harm a developing baby, so pregnancy is one time to avoid it unless your doctor says otherwise.
There's also a theoretical risk of contamination: liver is sourced from slaughterhouses and could come from sick or diseased animals, and in countries where bovine spongiform encephalitis (BSE, or mad cow disease) has been found, there's a risk of contaminated tissue. No cases of BSE transfer to humans from liver extract have been reported, but the risk remains a reason to check where your product is sourced.
Meds to double-check
Minor interactions only
Check before taking this product if you use warfarin (Coumadin) — a blood thinner — or if you take iron supplements or iron-containing medications. The vitamin K in liver extract may reduce warfarin's effect, and the natural iron content could add up if you're already taking iron.
The bottom line
Scorecard at a glanceFully disclosed formula with no established evidence rating for its marketed use. Only minor medication interactions are documented, and safety information is well characterized.
Grass-fed beef liver is generally well tolerated as a whole-food supplement for healthy adults who aren't taking blood thinners or iron supplements. If you're on warfarin or iron medication, or if you're pregnant, check with your pharmacist first.
Ask where the product is sourced — ideally from countries without a history of BSE.
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 24, 2025.
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
General information
Key facts about Grass Fed Beef Liver 3,000 mg, straight from the product label.
| Brand | Dr. Mercola |
|---|---|
| Barcode (UPC) | 810094213046 |
| Net contents | 180 Capsule(s) |
| Market status | On market |
| Date entered into DSLD | Apr 24, 2025 |
| DSLD ID | 327167 |
| Product type | Non-nutrient/non-botanical |
| Supplement form | Capsule |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Adult (18 - 50 Years) |
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 Grass Fed Beef Liver 3,000 mg by Dr. Mercola, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Calories | 15 Calorie(s) | -- |
| Total Carbohydrates | 1 Gram(s) | 1% |
| Total Sugars | 0 Gram(s) | -- |
| Total Fat | 0.5 Gram(s) | 1% |
| Protein | 2 Gram(s) | -- |
| Bovine Liver | 3000 mg | -- |
Other ingredients: Hydroxypropyl Methylcellulose, Rice Husk, Rice Bran Extract, Gum Acacia, Sunflower Oil
Tap any ingredient to jump to its full detail below.
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.
Suggested/Recommended/Usage/Directions
Suggested Use: Adults, as a dietary supplement, take six (6) capsules daily.
Precautions
Keep out of reach of children.
Do not use if safety seal is broken.
If you are nursing, pregnant, taking medication or have a medical condition, consult your physician before taking this product.
FDA Disclaimer Statement
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Formulation
Immune support Detoxification support Blood flow support
Formula
Grass Fed Beef Liver 3,000 mg per serving
FDA Statement of Identity
Dietary Supplement
General Statements
Providing quality products since 2001.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Grass Fed Beef Liver 3,000 mg by Dr. Mercola label
The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.
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)The Ingredients in Grass Fed Beef Liver 3,000 mg by Dr. Mercola
These are the 2 active ingredients this product is made of. Select any to open its full monograph.
Serving size6 Capsule(s) Dosage formCapsule Servings per container30 Amounts shown are per serving.
Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.
Protein
Bovine Liver
Interacts with3 drugs
Liver extract is a dried or concentrated form of animal liver that is naturally rich in iron, vitamin B12, vitamin A, and other nutrients. It was once...
Bovine Liver monograph & interactionsOther (inactive) ingredients: Hydroxypropyl Methylcellulose, Rice Husk, Rice Bran Extract, Gum Acacia, Sunflower Oil. These complete the product’s ingredient list but are not active constituents.
Grass Fed Beef Liver 3,000 mg by Dr. Mercola Drug Interactions
HelloPharmacist Interaction Report
Dr.
Mercola's Grass Fed Beef Liver can interact with a small number of medications, though the documented interactions are minor.
Read the full breakdown — every affected drug type, severity by severity
The main concern is warfarin (Coumadin), a blood thinner. Liver extract contains variable amounts of vitamin K, which works against warfarin's effect.
Theoretically, starting or stopping this product or changing how much you take could lower your INR (a measure of how well warfarin is working). However, this interaction hasn't been directly studied or reported in humans, so the real-world risk isn't clear.
Iron supplements or iron-containing medications are the other interaction to watch. Because liver extract naturally contains heme iron, taking both together could increase your total iron intake and raise the risk of stomach upset or iron buildup in your body — especially at high doses, with long-term use, or if you have a condition like hemochromatosis (too much iron in the body).
Altogether, these interactions span 3 individual medications. If you take warfarin or iron supplements, check your exact medications with the search tool on this page before starting this product.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Grass Fed Beef Liver 3,000 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 checkerIngredients driving the most interactions
Individual Drug Interactions
The ingredients in Grass Fed Beef Liver 3,000 mg interact with 3 drugs. Click any drug to see the details.
1 of the 2 ingredients in Grass Fed Beef Liver 3,000 mg interact with drugs. Each result below shows which ingredient is responsible. Bovine Liver
Ferrous SulfateFeosol
How Ferrous Sulfate interacts with Grass Fed Beef Liver 3,000 mg — through 1 ingredient. Tap an ingredient for the detail:
Bovine LiverIron Minor
Interaction Summary
Liver extract can contain heme iron.
Read the full Bovine Liver + Ferrous Sulfate interactionWarfarinWarfarin
How Warfarin interacts with Grass Fed Beef Liver 3,000 mg — through 1 ingredient. Tap an ingredient for the detail:
Bovine LiverWarfarin (coumadin) Minor
Interaction Summary
Liver extract products may contain small and variable amounts of vitamin K.
Read the full Bovine Liver + Warfarin interactionWarfarin SodiumCoumadin, Panwarfin, Sofarin
How Warfarin Sodium interacts with Grass Fed Beef Liver 3,000 mg — through 1 ingredient. Tap an ingredient for the detail:
Bovine LiverWarfarin (coumadin) Minor
Interaction Summary
Liver extract products may contain small and variable amounts of vitamin K.
Read the full Bovine Liver + Warfarin Sodium interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Grass Fed Beef Liver 3,000 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.
Bovine Liver
Iron
Liver extract can contain heme iron. Taking liver extract with iron-containing medications or supplements may increase total iron intake and could increase the risk of gastrointestinal adverse effects or excessive iron accumulation. The risk is greater with high doses, prolonged use, or in individuals with hemochromatosis or another iron-overload disorder. Review the iron content of the liver extract and the total elemental iron dose. Avoid unnecessary duplicate iron supplementation and consider monitoring ferritin and transferrin saturation when clinically appropriate.
Warfarin (Coumadin)
Liver extract products may contain small and variable amounts of vitamin K. Theoretically, starting, stopping, or substantially changing the amount of liver extract used could reduce the anticoagulant effect of warfarin and lower the INR. However, this interaction has not been directly studied or reported in humans, and the vitamin K content of liver extract products is generally not standardized. Consider monitoring the INR after a meaningful change in liver extract use.
Brand information
Manufacturer and brand details for Grass Fed Beef Liver 3,000 mg, from the product label.
Dr. Mercola
See all Dr. Mercola products- Name
- NHP
- Street Address
- 125 SW 3rd Place
- City
- Cape Coral
- State
- FL
- ZipCode
- 33991
- Phone Number
- (877) 985-2696
Grass Fed Beef Liver 3,000 mg by Dr. Mercola: Common Questions
Does Grass Fed Beef Liver 3,000 mg by Dr. Mercola interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Does this product have any side effects?
Is it safe to take if I'm pregnant?
Is it safe to take if I'm breastfeeding?
Can this help with chronic fatigue?
What's the difference between grass-fed and regular beef liver supplements?
Where is the liver sourced from?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Grass Fed Beef Liver 3,000 mg is safe with your meds?
Our pharmacists answer your medication & supplement questions — free.
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.
The Full Monographs Behind Grass Fed Beef Liver 3,000 mg’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
Grass Fed Beef Liver 3,000 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.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
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.
Liver Extract 4 references
- Lewis CJ. Letter to reiterate certain public health and safety concerns to firms manufacturing or importing dietary supplements that contain specific bovine tissues. FDA. Available at: www.cfsan.fda.gov/~dms/dspltr05.html.
- Kaslow JE, Rucker L, Onishi R. Liver extract-folic acid-cyanocobalamin vs placebo for chronic fatigue syndrome. Arch Intern Med 1989;149:2501-3. DOI
- Ebinuma, H., Saito, H., Tada, S., Masuda, T., Kamiya, T., Nishida, J., Yoshioka, M., and Ishii, H. Additive therapeutic effects of the liver extract preparation mixture adelavin-9 on interferon-beta treatment for chronic hepatitis C. Hepatogastroenterolog
- Saito, H., Ebinuma, H., Tada, S., Tsunematsu, S., Atsukawa, K., Masuda, T., Tsuchiya, M., and Ishii, H. Enhancing effect of the liver extract and flavin adenin dinucleotide mixture on anti-viral efficacy of interferon in patients with chronic hepatitis C. PubMed
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