# Porcine Kidney Tissue (Sus scrofa domesticus)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/porcine-kidney-tissue
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-25
**Evidence Score:** 2 / 10
**Category:** Protein
**Also Known As:** Sus scrofa domesticus kidney, Porcine kidney extract, Pig kidney tissue, Swine kidney, DAO supplement, Diamine oxidase extract, Porcine renal tissue

## Overview

Porcine kidney tissue (Sus scrofa domesticus) is an organ meat supplement containing diamine oxidase (DAO), an enzyme theorized to degrade histamine in the gut. Despite theoretical utility for histamine intolerance, human clinical evidence is absent, and at least one analysis found no measurable DAO activity in commercially available products.

## Health Benefits

• No human clinical benefits demonstrated - available research focuses only on cell line studies and enzyme characterization
• Contains diamine oxidase enzyme which theoretically oxidizes histamine, though one study found no DAO activity in commercial supplements
• Cell line research shows immunoproteasome activation potential, but this has not been studied in humans
• No evidence for kidney health support despite organ-specific sourcing
• No clinical trials have evaluated any health benefits in humans

## Mechanism of Action

Diamine oxidase (DAO), a copper-containing amine oxidase encoded by the AOC1 gene, theoretically catalyzes the oxidative deamination of histamine in the intestinal lumen, converting it to imidazole acetaldehyde and hydrogen peroxide, thereby reducing histamine absorption. Porcine kidney tissue is among the richest natural sources of DAO activity, with the enzyme also acting on putrescine and cadaverine. However, whether orally ingested DAO survives gastric proteolysis and reaches the intestinal mucosa in catalytically active form remains unestablished by controlled human data.

## Clinical Summary

No randomized controlled trials or observational human studies have evaluated porcine kidney tissue supplements for any health outcome. Available research is limited to in vitro cell line studies demonstrating [immunomodulatory](/ingredients/condition/immune-support) signals and biochemical characterization of porcine renal DAO enzyme kinetics. One analytical study of commercial DAO supplements, including porcine kidney-derived products, detected no measurable DAO enzymatic activity, raising serious questions about product viability and bioavailability. The overall evidence base is insufficient to support any clinical claim for porcine kidney supplementation in humans.

## Nutritional Profile

Porcine kidney tissue is a nutrient-dense organ meat with a well-characterized compositional profile. Per 100g fresh weight: Protein: ~17g (high biological value, complete amino acid profile including all essential amino acids; rich in lysine ~1.6g, leucine ~1.5g, and arginine ~1.1g per 100g). Fat: ~3.1g (predominantly phospholipids and cholesterol; omega-6 to omega-3 ratio approximately 4:1). Carbohydrates: ~0.3g (negligible). Water content: ~78g. Micronutrients of note: Vitamin B12: ~27-33µg per 100g (1,125-1,375% DV — exceptionally high; highly bioavailable methylcobalamin and adenosylcobalamin forms). Riboflavin (B2): ~2.5mg per 100g (~192% DV). Folate: ~98µg DFE per 100g. Niacin (B3): ~9mg per 100g. Pantothenic acid (B5): ~3.8mg per 100g. Iron: ~4.5mg per 100g (predominantly heme iron, ~25-35% bioavailability vs ~5-12% for non-heme sources). Zinc: ~2.3mg per 100g. Selenium: ~190µg per 100g (notably high; ~345% DV). Phosphorus: ~257mg per 100g. Copper: ~0.4mg per 100g. Bioactive compounds: Coenzyme Q10 (ubiquinone): ~10-15mg per 100g in fresh kidney tissue; reduced in dried/powdered supplements due to oxidation sensitivity. Diamine oxidase (DAO) enzyme: present in fresh porcine kidney cortex at measurable activity levels; however, enzymatic activity is highly sensitive to processing — freeze-drying and heat treatment substantially degrade activity, and at least one commercial supplement study found negligible residual DAO activity. Carnosine and anserine: present as dipeptides (~200-400mg per 100g combined), offering [antioxidant](/ingredients/condition/antioxidant) and buffering capacity with good oral bioavailability following intestinal hydrolysis. Taurine: ~100-200mg per 100g. Creatine: ~90mg per 100g. Collagen peptides: minor contributor (~1-2% of total protein). Purines: moderately high (~150-200mg uric acid equivalent per 100g), relevant for individuals with gout or hyperuricemia. Bioavailability notes: Protein digestibility-corrected amino acid score (PDCAAS) approximates 1.0. Fat-soluble micronutrient absorption (if any present) requires co-ingestion with dietary fat. In supplement/powder form, heat-labile compounds including DAO enzyme, CoQ10, and B vitamins may be significantly reduced depending on processing method; cold-processing or freeze-drying preserves more bioactive integrity than heat-desiccation.

## Dosage & Preparation

No clinically studied dosage ranges have been established for porcine kidney tissue extracts, powders, or standardized forms in humans. Available products do not specify therapeutic dosages and lack standardization data. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Porcine kidney supplements carry a risk of allergic reactions in individuals with red meat allergy, particularly those sensitized to alpha-gal (galactose-alpha-1,3-galactose), a carbohydrate antigen present in mammalian tissues. As a concentrated organ tissue, porcine kidney contains significant levels of purines, which may elevate uric acid and pose risk to individuals with gout or hyperuricemia. Potential contamination with heavy metals such as cadmium is a concern with kidney-derived products, as kidneys bioaccumulate environmental toxins. Safety data for pregnant or lactating women is nonexistent, and use during pregnancy is not recommended due to the unknown risk profile.

## Scientific Research

No human clinical trials, RCTs, or meta-analyses were identified for porcine kidney tissue as a supplement. Available research consists of preclinical cell line studies examining immunoproteasome induction and enzyme characterization studies, with one evaluation finding no DAO activity in a commercial pig kidney extract supplement.

## Historical & Cultural Context

No evidence of historical or traditional medicinal use of porcine kidney tissue was identified in traditional medicine systems. Current use appears limited to biomedical research applications rather than traditional healing practices.

## Synergistic Combinations

No synergistic ingredients identified in research

## Frequently Asked Questions

### Does porcine kidney supplement actually contain active DAO enzyme?

At least one published analytical study tested commercial DAO supplements including porcine kidney-derived products and found no detectable diamine oxidase enzymatic activity. This suggests that the DAO protein may be denatured during manufacturing, freeze-drying, or digestion, rendering the supplement ineffective for histamine degradation. Consumers should be cautious of marketing claims until rigorous third-party enzyme activity verification is available.

### Can porcine kidney supplements help with histamine intolerance?

Theoretically, oral DAO supplementation could degrade luminal histamine before absorption, but this mechanism has not been validated in humans specifically for porcine kidney tissue supplements. The few small pilot trials exploring DAO supplementation have used pharmaceutical-grade preparations, not whole organ powders, making extrapolation unreliable. Without peer-reviewed human trials confirming bioavailable DAO activity from porcine kidney products, any benefit for histamine intolerance remains speculative.

### Is porcine kidney supplement safe for people with gout?

Porcine kidney is a purine-rich organ tissue, and regular supplementation could contribute to elevated serum uric acid levels, increasing the risk of gout flares in susceptible individuals. Organ meats are generally classified as high-purine foods by the American College of Rheumatology, and concentrated kidney supplements may deliver a meaningful purine load per dose. Individuals diagnosed with gout, hyperuricemia, or kidney stones should consult a physician before using organ meat supplements.

### What is the recommended dosage of porcine kidney supplement?

No evidence-based dosage has been established for porcine kidney tissue supplements because no human clinical trials have been conducted to determine an effective or safe dose. Manufacturers typically recommend 1 to 3 capsules providing roughly 500 mg to 1,500 mg of freeze-dried kidney powder per day, but these doses are arbitrary and not validated by pharmacokinetic or efficacy data. Without standardized DAO activity units on product labels, comparing potency across brands is currently not possible.

### Does porcine kidney tissue contain nutrients beyond DAO enzyme?

Porcine kidney tissue provides B vitamins including riboflavin (B2) and cobalamin (B12), selenium, zinc, and heme iron, mirroring the nutritional profile of whole food kidney consumption. It also contains coenzyme Q10 and various peptides that have shown immunomodulatory properties in cell line studies, though these effects have not been confirmed in human trials. The nutritional contribution of a capsule-sized serving (500–1,500 mg) is substantially lower than eating a whole food serving of kidney (85 g), limiting its utility as a meaningful nutrient source.

### Is porcine kidney supplement safe for people with kidney disease?

Porcine kidney supplements have not been studied in people with kidney disease, and caution is warranted since supplementing with organ tissue could potentially affect kidney function or electrolyte balance. People with existing kidney conditions, particularly those on renal diets or medications, should consult a healthcare provider before use. There is no clinical evidence supporting safety in this population.

### What does the current scientific evidence actually show about porcine kidney supplements?

Research on porcine kidney supplements is extremely limited and consists primarily of cell line studies and basic enzyme characterization rather than human clinical trials. One study analyzing commercial porcine kidney supplements found no detectable DAO enzyme activity, raising questions about product consistency and efficacy. No human studies have demonstrated any health benefits, making it difficult to substantiate claims beyond theoretical mechanisms.

### Can I get the same nutrients from eating pork kidney instead of taking a supplement?

Whole pork kidney contains similar nutrients and DAO enzyme as supplements, though the enzyme content may degrade during cooking depending on temperature and method. The bioavailability and actual enzyme activity from fresh organ meat versus processed supplements has not been directly compared in research. If DAO enzyme activity is the goal, whole food sources may offer similar or superior nutrient density, but cooking typically inactivates enzymes.

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*Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com*
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