Hermetica Superfood Encyclopedia
Legacy index-continuity record: the score and narrative are provisional and must not be represented as validated or human-approved.
Review flags: AWAITING_SEMANTIC_VALIDATION
Salicin is a phenolic glycoside found in willow bark that acts as a natural precursor to salicylic acid. It provides anti-inflammatory and analgesic effects by inhibiting cyclooxygenase enzymes and reducing prostaglandin synthesis.
Origin & History
Salicin is a phenolic glycoside primarily extracted from the bark of willow trees (Salix species, particularly Salix alba), belonging to the chemical class of β-glucopyranosides. Commercial extraction involves solvent extraction followed by purification using HPLC or LC-MS to standardize salicin content.
Research Narrative (Provisional)
Clinical evidence includes RCTs for osteoarthritis (n=26), rheumatoid arthritis (n=26), and low back pain (n=51) using 240 mg salicin/day from standardized willow bark extracts (PMID: 15517622, 11345689). A systematic review of five studies with six RCTs noted high risk of bias in most trials but supported analgesic effects, though larger trials are needed (PMC10607963).
Preparation & Dosage
Dosage guidance is withheld because the publication gate has not recorded adequate support for this profile.
Nutritional Profile
Salicin is a phenolic glycoside compound (not a macronutrient or traditional nutrient), consisting of a salicyl alcohol moiety linked to a glucose unit via a β-glycosidic bond. Molecular weight: 286.28 g/mol. Molecular formula: C13H18O7. It is not a source of meaningful macronutrients, vitamins, or minerals in pharmacological doses. Typical therapeutic dose studied in RCTs: 240 mg salicin/day (standardized willow bark extract). Natural concentrations in white willow bark (Salix alba): approximately 1–10% salicin by dry weight, depending on species and plant part. Bioavailability: Salicin is hydrolyzed in the gastrointestinal tract by intestinal bacteria and mucosal enzymes, releasing salicyl alcohol (saligenin) and glucose. Saligenin is subsequently oxidized in the liver to salicylic acid, the primary active metabolite responsible for analgesic and anti-inflammatory effects. Peak plasma salicylate levels occur approximately 2 hours post-ingestion. Bioavailability of salicylic acid from salicin is lower than from aspirin (acetylsalicylic acid) due to this multi-step conversion process, resulting in slower onset but potentially fewer acute gastric side effects. The glucose moiety contributes negligible caloric value (~0.5 kcal per 240 mg dose). No significant fiber, protein, fat, or micronutrient content is associated with isolated salicin at therapeutic doses.
Reported Mechanism (Provisional)
Salicin is metabolized in the intestines and liver to saligenin, then oxidized to salicylic acid. Salicylic acid inhibits cyclooxygenase-1 and cyclooxygenase-2 enzymes, reducing prostaglandin E2 and thromboxane A2 synthesis. This pathway decreases inflammatory mediators and pain signaling cascades.
Clinical Narrative (Provisional)
A randomized controlled trial with 26 participants demonstrated that 240 mg daily salicin significantly reduced osteoarthritis pain scores on the WOMAC OA Index. The same study showed pain reduction in rheumatoid arthritis patients using 100mm VAS pain scales. While promising, the evidence base remains limited with small sample sizes requiring larger confirmatory trials.
Also Known As
Research updates — and 25% off your first order
Join our list for source-aware wellness education, review-state updates, and product news — and unlock 25% off your first Hermetica order. Educational content is not medical advice. No spam, unsubscribe anytime.