Eden Apothecary · Herb Profile
Piper nigrum
Pronounced BLAK PEP-er; PY-per NY-grum
Hot, dry, intensely pungent: the kitchen ember that rekindles cold, torpid digestive fire, scatters cold-damp and phlegm, and carries other medicines deeper into the body.
Culinary and food amounts have a long record of safe use and are considered safe (AHPA Botanical Safety Handbook, 2nd ed.; food-grade Piper nigrum). Avoid concentrated piperine extracts and high therapeutic doses in pregnancy: a rodent study reported possible anti-implantation and antifertility activity only at very high doses (piperine 75 mg/kg, far above any dietary intake), and piperine's inhibition of maternal drug metabolism (CYP3A4, P-glycoprotein) is undesirable in pregnancy. (Drugs and Lactation Database, LactMed; Restorative Medicine / Natural Medicines.)
Culinary and food amounts are considered compatible with breastfeeding. Piperine passes into breastmilk but at levels far below the infant taste threshold after ordinary dietary pepper (peak near 8.9 mcg/L in the single published study). No infant harm is documented at food amounts, and the Indian folk use of pepper to increase milk supply is not supported by clinical trials. Avoid concentrated piperine supplements while nursing (no safety data). (Drugs and Lactation Database, LactMed: Black Pepper.)
Culinary pepper is ubiquitous and safe for children as a food seasoning. Reserve concentrated piperine extracts and internal essential oil for adults. Whole or coarsely cracked peppercorns are an aspiration and choking hazard for infants and toddlers; use finely ground pepper in food only.
Culinary amounts are broadly safe and time-tested. The real concern is concentrated piperine (supplements such as BioPerine, typically 5 to 20 mg): at and above roughly 20 mg piperine it inhibits drug-metabolizing enzymes (CYP3A4, CYP2C9, CYP1A2), glucuronidation, and the P-glycoprotein transporter, raising blood levels of many co-taken drugs. Large therapeutic doses can irritate an inflamed or ulcerated GI tract and overheat hot, dry (Pitta) constitutions. Whole peppercorns are an aspiration and choking hazard for young children.
No absolute contraindications at culinary doses. Avoid high therapeutic doses and concentrated piperine with active peptic ulcer or erosive gastritis, symptomatic acid reflux, and any narrow-therapeutic-index medication (see Drug Interactions). Avoid concentrated piperine in pregnancy.
A globally cultivated commodity crop (Vietnam, India, Indonesia, Brazil, Sri Lanka); not at-risk or on any conservation list (not a United Plant Savers concern). Prefer organically grown, fairly traded peppercorns from smallholder cooperatives; conventional pepper can carry pesticide residue and post-harvest microbial load, so choose organic, steam-sterilized sources.
Not named in the canonical biblical texts; native to the Malabar coast of South India and unknown to the ancient Hebrews. Prized across Greco-Roman antiquity: Dioscorides (De Materia Medica) described peperi as heating and digestive, and Pliny the Elder (Natural History) deplored Rome's costly appetite for it. A principal Ayurvedic herb, Sanskrit Maricha, named in the Charaka and Sushruta Samhitas and one of the three pungents of Trikatu; TCM Hu Jiao.
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