Salvianolic Acid B (Phenolic Acid)

Salvianolic acid B is a water-soluble phenolic acid extracted from Salvia miltiorrhiza (danshen) that demonstrates potent antioxidant and anti-inflammatory properties. This bioactive compound works primarily through sirtuin activation and modulation of cellular signaling pathways.

Origin & History

Salvianolic Acid B is a polyphenolic compound (C₃₆H₃₀O₁₆, 718.61 g/mol) primarily extracted from the roots of Salvia miltiorrhiza (Danshen), a plant central to traditional Chinese medicine. Commercial preparations achieve >98% purity via HPLC extraction, yielding a light yellow to white powder that requires frozen storage due to heat sensitivity.

Historical & Cultural Context

In traditional Chinese medicine, Salvia miltiorrhiza roots (the source of Salvianolic Acid B) have been widely used for treating cardiovascular diseases. This documented historical application has driven modern research interest in isolating and studying its active compounds.

Health Benefits

• Cardiovascular protection through antioxidant and anti-inflammatory mechanisms (preclinical evidence only)
• Neuroprotective effects via sirtuin activation and cell signaling modulation (preclinical evidence only)
• Hepatoprotective properties demonstrated in laboratory studies (preclinical evidence only)
• Blood sugar regulation as a hypoglycemic agent (preclinical evidence only)
• Powerful antioxidant activity with ABTS EC50 ~1.43 μg/mL (laboratory testing only)

How It Works

Salvianolic acid B activates SIRT1 (sirtuin 1) enzyme and modulates nuclear factor-κB (NF-κB) signaling pathways to reduce inflammatory responses. The compound scavenges reactive oxygen species (ROS) and upregulates endogenous antioxidant enzymes including superoxide dismutase and catalase. It also promotes nitric oxide production through endothelial nitric oxide synthase (eNOS) activation, supporting vascular function.

Scientific Research

The research dossier reveals no human clinical trials, RCTs, or meta-analyses have been documented for Salvianolic Acid B. All available evidence comes from preclinical laboratory and animal studies demonstrating antioxidant, anti-inflammatory, and various protective effects through mechanisms including COX inhibition and sirtuin activation.

Clinical Summary

Current evidence for salvianolic acid B is limited to preclinical laboratory and animal studies, with no published human clinical trials available. In vitro studies demonstrate significant antioxidant capacity with IC50 values ranging from 10-50 μM in various cellular models. Animal studies using doses of 5-20 mg/kg show cardiovascular protection and hepatoprotective effects in rodent models. The lack of human data makes it difficult to establish therapeutic efficacy and optimal dosing for clinical applications.

Nutritional Profile

Salvianolic Acid B (SAB) is a pure isolated polyphenolic compound, not a whole food, and therefore has no macronutrient or micronutrient profile in the conventional sense. Key compositional data: Molecular formula C36H30O16, molecular weight 718.62 g/mol. It is the most abundant and pharmacologically active water-soluble phenolic acid isolated from Salvia miltiorrhiza (Danshen root), where it occurs at concentrations of approximately 1–3% dry weight of the root (roughly 10–30 mg/g dried root material). As a pure compound, it contains no protein, fat, carbohydrates, dietary fiber, vitamins, or minerals. Bioactive compound classification: caffeic acid oligomer (triester of caffeic acid with 3,4-dihydroxyphenyllactic acid and danshensu), belonging to the broader class of hydroxycinnamic acid derivatives. Bioavailability is notably poor via oral route due to high molecular weight, low lipophilicity, susceptibility to gut microbiota metabolism, and first-pass hepatic degradation; oral bioavailability reported at approximately 2–5% in animal models. It is partially converted by intestinal flora into smaller phenolic metabolites including danshensu and caffeic acid, which may contribute to observed bioactivity. Intravenous administration yields substantially higher plasma concentrations. Plasma half-life is approximately 1–2 hours in preclinical models. No dietary reference intake or recommended daily allowance has been established, as it is not classified as a nutrient.

Preparation & Dosage

No clinically studied dosage ranges are available as human clinical trials have not been conducted. Current use is limited to research settings only. Consult a healthcare provider before starting any new supplement.

Synergy & Pairings

Other Salvia miltiorrhiza compounds, Resveratrol, Quercetin, Green tea polyphenols, Curcumin

Safety & Interactions

No human safety data exists for isolated salvianolic acid B supplementation, making safety assessment challenging. As a component of danshen (Salvia miltiorrhiza), it may theoretically interact with anticoagulant medications like warfarin due to potential effects on blood clotting. Pregnant and breastfeeding women should avoid use due to insufficient safety data. Individuals with bleeding disorders or those scheduled for surgery should exercise caution given the parent plant's traditional use affecting circulation.