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
Sarpagandha (Rauvolfia serpentina) contains reserpine and other alkaloids that deplete norepinephrine and serotonin from nerve terminals, providing antihypertensive and sedative effects. This Ayurvedic herb acts primarily through sympathetic nervous system suppression to reduce blood pressure and anxiety.
Reported Benefits (Provisional)
Origin & History
Sarpagandha, or Rauvolfia serpentina, is a small, evergreen shrub native to India and Southeast Asia. Its roots are used in traditional medicine for their alkaloid content.
Research Narrative (Provisional)
Clinical studies have shown Sarpagandha to be effective in lowering blood pressure, with some RCTs supporting its use for anxiety. Further research is ongoing.
Preparation & Dosage
Dosage guidance is withheld because the publication gate has not recorded adequate support for this profile.
Nutritional Profile
Sarpagandha (Rauvolfia serpentina) is a medicinal root/herb rather than a dietary food source, so conventional macronutrient profiling is limited; it is not consumed in meaningful caloric quantities. Key bioactive alkaloids dominate its pharmacological profile: Reserpine (0.15–1.0% dry weight of root) is the primary active alkaloid responsible for antihypertensive and antipsychotic effects; Ajmaline (0.3–0.5% dry weight) contributes to cardiac rhythm regulation; Serpentine and Serpentinine (combined ~0.2–0.4% dry weight) act as mild CNS depressants; Yohimbine (trace, ~0.01–0.05%) is present as a minor alkaloid with adrenergic activity; Rescinamine (~0.1–0.2%) contributes to vasodilatory effects; Ajmalicine (Raubasine, ~0.1–0.3%) supports cerebral blood flow. Total indole alkaloid content in dried root ranges from 1.5–2.5% dry weight across over 50 identified alkaloids. Mineral content per 100g dried root (approximate): Calcium 180–220 mg, Iron 8–12 mg, Potassium 350–420 mg, Magnesium 90–110 mg, Phosphorus 70–90 mg. Trace amounts of Zinc (~1.5 mg/100g) and Copper (~0.8 mg/100g) are present. Crude fiber content is approximately 12–18% dry weight; crude protein is approximately 6–9% dry weight; total carbohydrates approximately 45–55% dry weight; lipid content is low at 2–4% dry weight. Bioavailability note: Alkaloids like reserpine are highly lipophilic and demonstrate good oral bioavailability (estimated 50–60%), with significant first-pass metabolism in the liver; they cross the blood-brain barrier readily. Standardized extracts are typically normalized to 0.15–0.20% reserpine content for therapeutic dosing.
Reported Mechanism (Provisional)
Sarpagandha's primary alkaloid reserpine irreversibly blocks vesicular monoamine transporter 2 (VMAT2), depleting norepinephrine, dopamine, and serotonin from sympathetic nerve terminals. This depletion reduces sympathetic nervous system activity, leading to vasodilation and decreased cardiac output. Additional alkaloids like serpentine and ajmaline contribute to the herb's hypotensive effects through similar catecholamine depletion mechanisms.
Clinical Narrative (Provisional)
Early clinical studies from the 1950s-1960s demonstrated sarpagandha root extract could reduce systolic blood pressure by 20-25% in hypertensive patients at doses of 200-600mg daily. However, most research is dated with small sample sizes (20-50 participants) and limited controls by modern standards. Recent studies focus primarily on isolated reserpine rather than whole plant extracts. The evidence suggests efficacy for mild to moderate hypertension, but more rigorous contemporary trials are needed to establish optimal dosing and long-term safety profiles.
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