Grass Fed Organ Complex Ingredients & Drug Interactions
What is this page for?
First and foremost: checking Grass Fed Organ Complex 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 Organ Complex is a dietary supplement by Optimal Carnivore with 9 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 Liver. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Grass Fed Organ Complex by Optimal Carnivore
Ask about any prescription or over-the-counter medication and we check it for interactions with Grass Fed Organ Complex by Optimal Carnivore — and tell you which ingredient is responsible.
AI summaries are generated from our interaction database for education only — always confirm with your pharmacist. How we use AI
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HelloPharmacist Scorecard of Grass Fed Organ Complex by Optimal Carnivore
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 9 active ingredients: beef and lamb organ concentrates (liver, spleen, kidney, lung, heart, brain, thymus, gallbladder, and pancreas). These are whole-food extracts meant to supply nutrients naturally present in animal organs.
The capsules themselves are made from gelatin.
Does it work?
Couldn't assess
The evidence we hold is limited. Liver extract is rated possibly ineffective for chronic fatigue syndrome, and we don't have enough reliable evidence to rate it for hepatitis C.
The other organ ingredients in this product haven't been assigned effectiveness ratings in our data.
How safe is it?
Well-documented data
No adverse reactions have been formally reported, but a thorough safety evaluation hasn't been done either. The main cautions: liver is very high in vitamin A and iron, and there's concern about contamination from raw animal liver sourced from slaughterhouses — potentially from sick animals.
There's also a theoretical risk of BSE (mad cow disease) contamination if the liver came from countries where BSE has been documented, though no human BSE cases from contaminated liver extract have ever been reported. We have no safety data on file for the other organ ingredients.
Because liver contains very high vitamin A, it may harm a developing baby, so avoid this product in pregnancy unless your doctor advises otherwise. Safety in breastfeeding hasn't been well studied.
Meds to double-check
Minor interactions only
Check your warfarin (Coumadin) dose and any iron supplements or medications with your pharmacist before starting. The liver ingredient may affect how warfarin works and could raise your iron intake.
The bottom line
Scorecard at a glanceFully disclosed formula with no assessable stated purpose. Only minor medication interactions are documented, and safety information is well characterized.
This is a whole-food organ supplement aimed at people following carnivore or nose-to-tail nutrition. If you take warfarin or iron supplements, check with us first — the liver ingredient could affect how those work.
Anyone pregnant or with iron-overload disease should talk to their doctor before starting. Source quality and contamination risk are real concerns to discuss with your pharmacist.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 1 of 9 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated May 24, 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
General information
Key facts about Grass Fed Organ Complex, straight from the product label.
| Brand | Optimal Carnivore |
|---|---|
| Barcode (UPC) | 644216607990 |
| Net contents | 180 Capsule(s) |
| Market status | On market |
| Date entered into DSLD | May 24, 2023 |
| DSLD ID | 295327 |
| 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 Organ Complex by Optimal Carnivore, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Liver | 540 mg | -- |
| Spleen | 270 mg | -- |
| Kidney | 240 mg | -- |
| Lung | 240 mg | -- |
| Heart | 240 mg | -- |
| Brain | 480 mg | -- |
| Lamb Thymus | 480 mg | -- |
| Gallbladder | 270 mg | -- |
| Pancreas | 240 mg | -- |
Other ingredients: Gelatin Capsules
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.
General Statements
Helping you thrive with the most nutrient dense foods on the planet
Formula
We believe that everyone deserves access to the most nutrient-dense food on the planet in a convenient easy way to take form. We only use 100% grass-fed organs from animals in New Zealand-one of the cleanest purest environments on earth. The cattle are reared as nature intended, without the use of growth-promoting hormones, free to roam grass pastures. Nothing but nutrients We gently freeze-dry the organs to preserve all the vitamins, minerals, proteins and enzymes.
Six capsules provide the equivalent of one ounce of fresh, raw whole organs.
9 organs 500 MG
Formulation
Hormone-free and non-GMO. 100% additive-free. No stearates, lubricants, binders, fillers or flow agents.
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.
FDA Statement of Identity
Dietary Supplement
Suggested/Recommended/Usage/Directions
Suggested use: 6 capsules daily or as directed by a healthcare professional
Seals/Symbols
GMP quality Good Manufacturing Practice Certification Made in USA
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Grass Fed Organ Complex by Optimal Carnivore 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 Organ Complex by Optimal Carnivore
These are the 9 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.
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...
Liver monograph & interactionsSpleen
Kidney
Lung
Heart
Brain
Lamb Thymus
Gallbladder
Pancreas
Other (inactive) ingredients: Gelatin Capsules. These complete the product’s ingredient list but are not active constituents.
Grass Fed Organ Complex by Optimal Carnivore Drug Interactions
HelloPharmacist Interaction Report
Grass Fed Organ Complex by Optimal Carnivore has documented interactions with a small number of medications.
The liver ingredient contains variable amounts of vitamin K, which theoretically could reduce how well warfarin (Coumadin) — a blood thinner — works if you start, stop, or significantly change your dose of this product. That said, this interaction hasn't been directly studied in humans, so the real-world risk is unclear.
Read the full breakdown — every affected drug type, severity by severity
The liver ingredient also contains heme iron. If you're taking iron supplements or iron-containing medications, adding this product could push your total iron intake higher and raise the risk of stomach upset or iron buildup in your body — especially if you take high doses, use it long-term, or have a condition like hemochromatosis (iron overload disease).
We couldn't check the other eight ingredients — spleen, kidney, lung, heart, brain, lamb thymus, gallbladder, and pancreas — because we hold no interaction data for them. Altogether, these interactions span 3 individual medications.
Before you start this product, run it through the medication checker on this page with your exact drugs.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Grass Fed Organ Complex?
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 Organ Complex interact with 3 drugs. Click any drug to see the details.
1 of the 9 ingredients in Grass Fed Organ Complex interact with drugs. Each result below shows which ingredient is responsible. Liver
Ferrous SulfateFeosol
How Ferrous Sulfate interacts with Grass Fed Organ Complex — through 1 ingredient. Tap an ingredient for the detail:
LiverIron Minor
Interaction Summary
Liver extract can contain heme iron.
Read the full Liver + Ferrous Sulfate interactionWarfarinWarfarin
How Warfarin interacts with Grass Fed Organ Complex — through 1 ingredient. Tap an ingredient for the detail:
LiverWarfarin (coumadin) Minor
Interaction Summary
Liver extract products may contain small and variable amounts of vitamin K.
Read the full Liver + Warfarin interactionWarfarin SodiumCoumadin, Panwarfin, Sofarin
How Warfarin Sodium interacts with Grass Fed Organ Complex — through 1 ingredient. Tap an ingredient for the detail:
LiverWarfarin (coumadin) Minor
Interaction Summary
Liver extract products may contain small and variable amounts of vitamin K.
Read the full Liver + Warfarin Sodium interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Grass Fed Organ Complex 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.
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 Organ Complex, from the product label.
Optimal Carnivore
See all Optimal Carnivore products- Name
- Optimal Carnivore, LLC
- Street Address
- 13359 N Hwy 183, Ste 406.
- City
- Austin
- State
- TX
- ZipCode
- 78750
- Web Address
- www.optimalcarnivore.com
Grass Fed Organ Complex by Optimal Carnivore: Common Questions
Does Grass Fed Organ Complex by Optimal Carnivore interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Is this safe if I'm pregnant?
Can I take this with iron supplements?
Does this really work for tiredness or fatigue?
What's the source-quality concern you mentioned?
What are these organ ingredients actually for?
Are there any fillers in the capsules?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Grass Fed Organ Complex 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 Organ Complex’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 Organ Complex'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