Bing Pian (Borneolum)

Bing Pian (Borneolum) is a refined crystalline aromatic compound, not a conventional food ingredient, and thus lacks meaningful macronutrient or micronutrient content in the dietary sense. Primary bioactive compound: Borneol (C10H18O) — a bicyclic monoterpenoid alcohol — constitutes approximately 95–99% of the refined crystalline product. Two isomeric forms exist: d-Borneol (naturally derived from Dryobalanops aromatica or Blumea balsamifera) and synthetic dl-Borneol (racemic mixture). Additional trace compounds in natural preparations include: Camphor (0.5–2%), Isoborneol (<1%), and minor sesquiterpenes. Synthetic (machine-made) Bing Pian may contain traces of turpentine-derived compounds. No meaningful protein, carbohydrate, fat, dietary fiber, vitamins, or minerals are present. Bioavailability notes: Borneol is highly lipophilic (log P ≈ 1.97), enabling rapid transdermal and transmucosal absorption. It demonstrates notable blood-brain barrier penetration, with studies suggesting it can act as a P-glycoprotein inhibitor, enhancing CNS bioavailability of co-administered compounds by approximately 1.5–2x in animal models. Oral bioavailability is moderate due to first-pass hepatic metabolism, primarily converting to borneol glucuronide. Volatile at room temperature, which facilitates inhalation-based absorption. Typical therapeutic dose range: 0.15–0.3g per day in traditional formulations.