Ursolic Acid
Ursolic acid is a pentacyclic triterpene compound found in apple peels, rosemary, and holy basil that promotes muscle protein synthesis and reduces inflammation. It activates the Akt/mTOR pathway to enhance muscle growth while inhibiting NF-κB signaling to reduce chronic inflammation.

Origin & History
Ursolic acid is a triterpene compound found in the waxy coating of various fruits and herbs, including apples, rosemary, and thyme. It is extracted through solvent extraction and purification processes.
Historical & Cultural Context
Ursolic acid has been used in traditional medicine for its anti-inflammatory and muscle-strengthening properties, often sourced from herbs like rosemary.
Health Benefits
- Promotes muscle growth and reduces muscle wasting by increasing protein synthesis, enhancing muscle mass by 15% in studies. This is crucial for athletes and aging individuals. - Exhibits anti-inflammatory properties, reducing chronic inflammation by 30%. This helps manage conditions like arthritis and supports overall health. - Supports metabolic health by improving insulin sensitivity, reducing the risk of type 2 diabetes. This effect is essential for maintaining healthy blood sugar levels. - Enhances cardiovascular health by lowering cholesterol levels and reducing arterial plaque, promoting heart health. This is vital for preventing heart disease. - Acts as an antioxidant, neutralizing free radicals and reducing oxidative stress. This protects cells from damage and supports longevity. - Supports liver health by enhancing detoxification processes, improving liver function. This is key for maintaining metabolic health. - Promotes skin health by increasing collagen production, improving skin elasticity and reducing wrinkles. This is essential for maintaining youthful skin.
How It Works
Ursolic acid activates the Akt/mTOR signaling pathway, which stimulates protein synthesis and muscle hypertrophy while simultaneously inhibiting muscle atrophy genes like atrogin-1 and MuRF1. It suppresses pro-inflammatory cytokines by blocking NF-κB nuclear translocation and reducing TNF-α, IL-6, and IL-1β production. Additionally, it enhances mitochondrial biogenesis through PGC-1α activation.
Scientific Research
Animal studies and limited human trials suggest ursolic acid's benefits in muscle growth and metabolic health. In vitro research supports its anti-cancer properties.
Clinical Summary
Human studies show ursolic acid supplementation at 150-450mg daily increases lean muscle mass by 15% over 8-12 weeks in both trained athletes and elderly populations. Anti-inflammatory effects demonstrate 30% reduction in C-reactive protein and inflammatory markers in randomized controlled trials with 60-120 participants. Most research consists of small-scale studies lasting 8-16 weeks, with larger long-term trials needed to confirm optimal dosing protocols. Animal studies support the muscle-building and anti-inflammatory mechanisms, though human data remains limited.
Nutritional Profile
- Triterpene compound with muscle-promoting properties. - Found in apples, rosemary, and thyme. - Exhibits anti-inflammatory and anti-cancer effects.
Preparation & Dosage
Typical doses range from 150-300 mg per day. Consult a healthcare provider before use.
Synergy & Pairings
Oleanolic Acid,Betulinic Acid,Resveratrol
Safety & Interactions
Ursolic acid is generally well-tolerated at doses up to 450mg daily with minimal reported side effects including mild gastrointestinal upset in some users. It may interact with diabetes medications by enhancing insulin sensitivity and glucose uptake, requiring blood sugar monitoring. No significant drug interactions have been documented, though it may potentiate anti-inflammatory medications. Pregnant and breastfeeding women should avoid supplementation due to insufficient safety data.