# Spermidine **Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/spermidine **Data Source:** Hermetica Superfoods Ingredient Encyclopedia **Updated:** 2026-03-18 **Evidence Score:** 6 / 10 **Category:** Compound **Also Known As:** N-(3-aminopropyl)butane-1,4-diamine, SPD, Triamine, 1,8-Diamino-4-azaoctane, Gerontine, Neuridine ## Overview Spermidine is a naturally occurring polyamine that activates [autophagy](/ingredients/condition/longevity), the cellular cleaning process that removes damaged proteins and organelles. It works by inhibiting EP300 acetyltransferase, leading to enhanced cellular renewal and longevity. ## Health Benefits - Supports cellular renewal and longevity by inducing [autophagy](/ingredients/condition/longevity), a process that removes damaged cells and promotes cellular health. This can lead to a 30% increase in lifespan as shown in animal studies. - Promotes [cardiovascular health](/ingredients/condition/heart-health) by reducing arterial stiffness and lowering blood pressure, which decreases the risk of heart disease. - Enhances [cognitive function](/ingredients/condition/cognitive) by reducing [oxidative stress](/ingredients/condition/antioxidant) and [inflammation](/ingredients/condition/inflammation) in the brain, potentially lowering the risk of neurodegenerative diseases. - Boosts [immune function](/ingredients/condition/immune-support) by modulating immune cell activity, helping the body fight infections more effectively. - Improves skin health by increasing [collagen production](/ingredients/condition/skin-health), leading to firmer and more youthful skin. - Aids in muscle maintenance by reducing muscle loss during aging, supporting overall physical strength. - Supports metabolic health by improving [insulin sensitivity](/ingredients/condition/weight-management), which can help maintain healthy blood sugar levels. ## Mechanism of Action Spermidine inhibits the EP300 acetyltransferase enzyme, which prevents acetylation of [autophagy](/ingredients/condition/longevity)-related proteins like ATG5 and ATG7. This deacetylation activates the autophagy machinery, triggering lysosomal degradation of damaged cellular components. The compound also modulates mTOR signaling and AMPK pathways to enhance cellular stress resistance. ## Clinical Summary Human studies show spermidine supplementation (1.2mg daily) improved memory performance in 85 older adults with subjective [cognitive](/ingredients/condition/cognitive) decline over 12 months. A population study of 829 participants found higher dietary spermidine intake correlated with reduced [cardiovascular](/ingredients/condition/heart-health) mortality over 20 years. Animal studies demonstrate 25-30% [lifespan extension](/ingredients/condition/longevity), but long-term human longevity data remains limited. Most evidence comes from observational studies and short-term interventional trials. ## Nutritional Profile - Polyamine compound involved in cellular growth. - Found in foods like wheat germ and soybeans. - Integral to cellular maintenance and [longevity](/ingredients/condition/longevity). ## Dosage & Preparation Typical dosage ranges from 1-5 mg per day. Consult a healthcare provider before use. ## Safety & Drug Interactions Spermidine is generally well-tolerated at doses up to 6mg daily, with mild gastrointestinal upset being the most common side effect. It may interact with [autophagy](/ingredients/condition/longevity)-modulating medications and could theoretically enhance effects of caloric restriction mimetics. Safety during pregnancy and breastfeeding has not been established. Individuals with autoimmune conditions should consult healthcare providers as autophagy modulation may affect [immune function](/ingredients/condition/immune-support). ## Scientific Research Spermidine has been studied in both animal and human trials for its role in promoting longevity and [autophagy](/ingredients/condition/longevity). Its effects on [cardiovascular](/ingredients/condition/heart-health) and [cognitive](/ingredients/condition/cognitive) health are promising. ## Historical & Cultural Context Research on spermidine has focused on its role in cellular aging and [longevity](/ingredients/condition/longevity), drawing from studies on dietary sources and health outcomes. ## Synergistic Combinations Resveratrol, NMN, Quercetin ## Known Interactions | Substance | Severity | Summary | URL | |---|---|---|---| | Urolithin A | SAFE | Spermidine and Urolithin A — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/urolithin-a | | Adrafinil | SAFE | Adrafinil and Spermidine — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/adrafinil | | Serrapeptase | SAFE | Serrapeptase and Spermidine — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/serrapeptase | | Phenibut | SAFE | Phenibut and Spermidine — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/phenibut | | Tianeptine | SAFE | Tianeptine and Spermidine — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/tianeptine | | Fadogia Agrestis | SAFE | Fadogia Agrestis and Spermidine — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/fadogia-agrestis | | Nattokinase | SAFE | Nattokinase and Spermidine — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/nattokinase | | Cistanche | SAFE | Cistanche and Spermidine — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/cistanche | | Black Walnut Hull | SAFE | Black Walnut Hull and Spermidine — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/black-walnut-hull | | Lumbrokinase | SAFE | Lumbrokinase and Spermidine — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/lumbrokinase | | Wormwood | SAFE | Wormwood and Spermidine — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/wormwood | | Apigenin | SAFE | Apigenin and Spermidine — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/apigenin | | Wobenzym | SAFE | Wobenzym and Spermidine — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/wobenzym | | Emodin | SAFE | Emodin and Spermidine — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/emodin | | Clove Oil | SAFE | Clove Oil and Spermidine — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/clove-oil | | Tea Tree Oil | SAFE | Tea Tree Oil and Spermidine — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/tea-tree-oil | | Monolaurin | SAFE | Monolaurin and Spermidine — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/monolaurin | | Sea Moss | SAFE | Sea Moss and Spermidine — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/sea-moss | | Colloidal Silver | SAFE | Colloidal Silver and Spermidine — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/colloidal-silver | | Ashwagandha | SAFE | Spermidine and Ashwagandha — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/ashwagandha | ## Frequently Asked Questions ### What foods contain spermidine naturally? Wheat germ contains the highest levels at 243mg per kg, followed by aged cheese (199mg/kg), mushrooms (89mg/kg), and soybeans (62mg/kg). Fermented foods like natto and aged cheeses are particularly rich sources due to bacterial polyamine production. ### How much spermidine should I take daily? Clinical studies typically use 0.5-6mg daily, with 1.2mg being the most studied dose for cognitive benefits. Most supplements provide 1-10mg per serving, though optimal dosing for longevity benefits in humans hasn't been definitively established. ### When should I take spermidine supplements? Spermidine is best taken on an empty stomach in the morning to maximize absorption and align with natural autophagy cycles. Taking it with food, especially high-fat meals, may reduce bioavailability by up to 40%. ### How long does it take to see spermidine benefits? Cellular autophagy markers improve within 2-4 weeks of supplementation, but cognitive and cardiovascular benefits typically require 3-12 months of consistent use. Animal studies suggest longevity benefits accumulate over longer periods with sustained intake. ### Can spermidine cause side effects? Side effects are rare but may include nausea, stomach upset, and mild diarrhea, especially at doses above 10mg daily. These effects typically resolve within a few days as the body adjusts to supplementation. ### Does spermidine interact with common medications like blood pressure drugs or statins? Spermidine has minimal documented interactions with most common medications, though its blood pressure-lowering effects may have additive benefits (or require monitoring) when combined with antihypertensive drugs. If you take medications for cardiovascular health, consult your healthcare provider before starting spermidine supplementation to ensure optimal safety and efficacy. Always inform your doctor about all supplements you're taking to avoid unintended interactions. ### What is the difference between spermidine from food sources versus supplements? Food-based spermidine (from aged cheese, mushrooms, and fermented foods) is absorbed naturally through your diet but may provide lower concentrations than standardized supplements, which offer precise dosing and higher bioavailability. Supplements bypass digestion variability and deliver consistent amounts, though some research suggests whole-food sources may include synergistic compounds that enhance overall cellular benefits. Both forms can support autophagy, but supplements are more reliable for therapeutic dosing. ### Is spermidine safe for pregnant women, children, or elderly individuals? Spermidine safety data in pregnant women is limited, so supplementation is generally not recommended during pregnancy without medical guidance; it occurs naturally in foods at safe levels. For children and elderly individuals, no severe contraindications exist, though research is more robust in adults, and dosing should be individualized based on age and health status. Consult a healthcare provider before giving spermidine to children or using it if you are elderly with multiple health conditions. --- *Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com* *License: CC BY-NC-SA 4.0 — Attribution required. Commercial use: admin@hermeticasuperfoods.com*