Hermetica Superfood Encyclopedia
The Short Answer
Phlorizin is a dihydrochalcone glucoside found in apple tree bark that functions as a sodium-glucose linked transporter (SGLT) inhibitor. This compound blocks glucose reabsorption in the kidneys, leading to glucose excretion and potential blood sugar management effects.
CategoryNamed Bioactive Compounds
GroupCompound
Evidence LevelModerate
Primary Keywordphlorizin benefits
Synergy Pairings3
Phlorizin — botanical close-up
Health Benefits
Origin & History
Natural habitat
Phlorizin is a naturally occurring dihydrochalcone glucoside primarily extracted from apple tree bark, leaves, seeds, and roots, particularly from unripe apples (Malus species). It is chemically designated as a polyphenolic flavonoid with molecular formula C₂₁H₂₄O₁₀ and is typically extracted using ethanol or hot water extraction methods.
“Traditional use information is not documented in the available research. Historical applications in traditional medicine systems such as Ayurveda or Traditional Chinese Medicine are not specified in current sources.”Traditional Medicine
Scientific Research
The available research lacks peer-reviewed clinical trials, RCTs, or meta-analyses with PMIDs. Current evidence is limited to preliminary reports of biological activities without validated human studies or documented clinical outcomes.
Preparation & Dosage
Traditional preparation
No clinically studied dosage ranges are available in the current research. Standardization protocols and dosing recommendations for different formulations have not been established. Consult a healthcare provider before starting any new supplement.
Nutritional Profile
Phlorizin is a purified dihydrochalcone flavonoid compound (C21H24O10), not a whole food or dietary supplement in the traditional sense, and therefore has no conventional macronutrient or micronutrient profile. Molecular weight: 436.41 g/mol. It is a glycoside consisting of phloretin (aglycone) bound to glucose via a beta-glycosidic bond. Naturally occurring concentrations in food sources: apple tree bark (up to 1-5% dry weight), apple roots (highest concentrations, ~2-4 g/kg dry weight), apple leaves (~0.5-2 g/kg dry weight), and apple fruit skin (trace amounts, ~0.5-1 mg/kg fresh weight). Also found in smaller quantities in pear and cherry tree bark. As an isolated compound, it contains no protein, fat, fiber, or micronutrients. Bioactive profile centers entirely on its SGLT1 and SGLT2 inhibitory activity, with an IC50 of approximately 0.3-1 µM for SGLT2 inhibition. Bioavailability when ingested is limited due to hydrolysis by intestinal lactase-phlorizin hydrolase (LPH), which cleaves it into phloretin and glucose before absorption; phloretin itself is then absorbed with moderate bioavailability (~20-30% estimated). It is primarily a research compound and not present in meaningful dietary quantities through normal food consumption.
How It Works
Mechanism of Action
Phlorizin competitively inhibits sodium-glucose linked transporters (SGLT1 and SGLT2) in the kidneys and intestines, preventing glucose reabsorption and promoting glucose excretion through urine. The compound also appears to modulate glucose metabolism in the brain, potentially affecting memory formation through improved neuronal glucose utilization. Additional mechanisms may involve inhibition of glucose absorption in the small intestine via SGLT1 blockade.
Clinical Evidence
Current evidence for phlorizin comes primarily from animal studies and preliminary human research. Animal studies demonstrate significant glucose-lowering effects through induced glucosuria, with some rodent models showing 20-30% reductions in blood glucose levels. Memory enhancement studies are limited to animal models, showing improved cognitive performance in maze tests. Human clinical trials are scarce, with most evidence remaining at the preclinical stage, limiting conclusions about therapeutic efficacy and optimal dosing.
Safety & Interactions
Phlorizin may cause excessive glucose loss through urine, potentially leading to dehydration or electrolyte imbalances in sensitive individuals. The compound could theoretically interact with diabetes medications, particularly SGLT2 inhibitors like empagliflozin, potentially causing additive glucose-lowering effects. Pregnant and breastfeeding women should avoid phlorizin supplementation due to lack of safety data. Individuals with kidney disease should exercise caution as the compound affects renal glucose handling.
Synergy Stack
Hermetica Formulation Heuristic
Also Known As
PhloridzinApple bark extractDihydrochalcone glucosideMalus extractApple polyphenol3-(4-Hydroxyphenyl)-1-(2,4,6-trihydroxyphenyl)propan-1-one 4'-glucosidePhlorhizinApple tree bark compound
Frequently Asked Questions
What foods contain phlorizin naturally?
Phlorizin is found primarily in apple tree bark, apple leaves, and apple root bark, with concentrations ranging from 2-10% by weight. Smaller amounts are present in apple fruit skin and cherry tree bark.
How much phlorizin should I take daily?
No established dosage exists for phlorizin supplements due to limited human studies. Research doses in animal studies typically range from 50-200mg per kg of body weight, but human equivalent doses remain undetermined.
Can phlorizin help with diabetes management?
Phlorizin shows promise for blood sugar control through SGLT inhibition, similar to prescription diabetes drugs. However, human clinical trials are lacking, and it should not replace proven diabetes treatments without medical supervision.
Does phlorizin cause side effects?
Potential side effects include increased urination, glucose in urine, and possible dehydration due to glucose loss. Some individuals may experience gastrointestinal upset, though comprehensive safety data in humans is limited.
How long does phlorizin take to work?
Animal studies suggest phlorizin's glucose-lowering effects occur within 2-4 hours of administration, with peak effects lasting 6-8 hours. Human response times may vary, but similar rapid onset is expected based on the mechanism of action.
What does the research evidence show about phlorizin's effectiveness?
Most phlorizin research remains preliminary and conducted in animal models or laboratory settings, with very limited human clinical trials. Evidence for blood sugar regulation through SGLT inhibition and memory support is promising but not yet conclusively established in humans. Claims about anticancer potential and anti-allergy properties lack clinical trial data and should be considered speculative at this stage. Consumers should be cautious about supplements making strong health claims based on this early-stage research.
Is phlorizin safe to take with diabetes medications?
Because phlorizin may affect blood glucose levels through SGLT inhibition mechanisms similar to prescription SGLT2 inhibitors, concurrent use with diabetes medications carries potential interaction risks. Taking phlorizin alongside metformin, sulfonylureas, or other glucose-lowering drugs without medical supervision could theoretically increase hypoglycemia risk. Anyone using antidiabetic medications should consult their healthcare provider before adding phlorizin supplementation. Professional medical monitoring is essential if combining phlorizin with prescription diabetes treatments.
Who should avoid taking phlorizin supplements?
Individuals with type 1 diabetes, those on SGLT2 inhibitor medications, and people with urinary tract infections or genital infections should avoid phlorizin, as it may induce glucosuria and worsen these conditions. Pregnant and nursing women should avoid phlorizin due to insufficient safety data in these populations. People with kidney disease or those at high risk for dehydration should consult a healthcare provider before use, as phlorizin's glucose-urinary effects may be contraindicated. Anyone with uncontrolled or poorly managed blood sugar should not self-treat with phlorizin without professional medical guidance.
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