Pilocarpus spicatus

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Common products:
Leaf material of Pilocarpus spicatus is harvested primarily for its content of the imidazole alkaloid pilocarpine. The dried leaves are processed into standardized alkaloid‑rich extracts that are supplied as raw material for analytical reference standards and for the production of pilocarpine for research purposes. Commercial offerings are typically labeled as “Pilocarpus spicatus leaf extract (1–5 % pilocarpine)” and are used by laboratories, contract manufacturers of reference chemicals, and botanical raw‑material suppliers.

Properties relevant to use:
Pilocarpine is a water‑soluble alkaloid that remains stable under mildly acidic extraction conditions, facilitating efficient isolation from leaf tissue. The leaf material also contains other minor alkaloids (e.g., spicatine) and phenolic compounds that do not interfere with pilocarpine purification. The extract’s high pilocarpine concentration (often > 3 % w/w in dried leaf) and consistent alkaloid profile make it suitable as a source material for analytical calibrants and for the preparation of reference standards in chromatographic and spectrophotometric assays.

Standards and regulation:
Raw Pilocarpus spicatus leaf material and its pilocarpine‑rich extracts are covered by monographs in the United States Pharmacopeia (USP) and the European Pharmacopoeia (Ph. Eur.) that define identity, purity, and assay specifications for pilocarpine reference standards. The preparation of reference materials follows ISO 17034 (general requirements for the competence of reference material producers). Botanical raw material must comply with Good Agricultural and Collection Practices (GACP) and meet national and international limits for heavy metals, pesticide residues, and microbiological contamination under the EU Regulation (EC) No 1069/2009 (for animal feed) and the U.S. Food and Drug Administration (FDA) guidelines for dietary supplements.

Sustainability and sourcing:
The species occurs naturally in the Atlantic Forest biome of Brazil and is currently harvested from wild populations. Field surveys indicate that unsustainably high collection rates have led to localized declines, prompting conservation assessments by the International Union for Conservation of Nature (IUCN). To reduce pressure on wild stocks, several Brazilian research institutes and private growers have initiated cultivation trials under controlled greenhouse conditions, aiming to produce consistent, pesticide‑free leaf material. Sustainable harvest protocols recommend limiting collection to a maximum of 10 % of mature individuals per population annually and establishing seed banks for future propagation. Certification under recognized sustainable‑sourcing schemes (e.g., Fairwild or equivalent) is increasingly required by reputable raw‑material buyers.

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