BP105T • Unit 4Topic 1 of 3⏱ 5 Min Read

1. Types and Methods of Commercial Drug Adulteration

💡 Core Concept & Clinical Context:

Adulteration is the debasement of an article of commerce. In crude drugs, adulteration involves fraudulent substitution or accidental addition of an impure, spurious, deteriorated, or inert substance to an authentic drug. Adulteration is classified into: (1) Substitution with substandard/inferior commercial varieties (e.g., substituting true Senna with Arabian or Dog Senna), (2) Substitution with exhausted drugs from which active chemical constituents have been extracted (e.g., exhausted Tea leaves colored with iron salts, exhausted Clove or Ginger), (3) Substitution with superficially similar inferior natural substances (e.g., Ailanthus leaves for Belladonna; Saffron adulterated with dried safflower florets), (4) Substitution with artificially manufactured synthetic materials (e.g., compressed paraffin wax colored yellow to simulate Beeswax), and (5) Contamination with toxic foreign matter (e.g., lead shot added to Opium packages to increase gross weight).

Clinical Scenarios & Pharmacopoeial Examples:

1Classic Pharmacopoeial Adulteration Examples

Authentic crude drugs and their commercial counterfeit substitutes.

Step-by-Step Breakdown:

•• Digitalis purpurea (Foxglove leaves): Adulterated with Verbascum thapsus (Mullein leaves) or Primula vulgaris. (Distinguished microscopically by branched candelabra trichomes in Verbascum vs. uniseriate multicellular trichomes in Digitalis).

•• Clove (Syzygium aromaticum): Adulterated with Mother Cloves (mature ripe clove fruits containing starch) and Clove Stalks (contains high calcium oxalate prisms and less volatile oil).

•• Rauwolfia serpentina: Adulterated with Rauwolfia vomitoria or Rauwolfia tetraphylla (contains lower reserpine and different sclerenchyma stone cells).

•• Capsicum minimum: Adulterated with red lead oxide mineral powder.

📋Key Takeaways & Exam Highlights

Deliberate (Intentional) Adulteration: Motivated by commercial profit and supply shortage.
Inadvertent (Accidental) Adulteration: Due to careless collection by untrained tribals, faulty drying, or confusing regional vernacular names.
Exhausted Drugs: Completely devoid of active therapeutic metabolites; identified by low alcohol/water extractive values and low volatile oil content.

🇮🇳 हिन्दी व्याख्या (1. Types and Methods of Commercial Drug Adulteration)

मिलावट (Adulteration) 5 प्रकार की होती है: घटिया किस्म मिलाना, रस निकाले हुए सूखे पौधे (Exhausted drugs) मिलाना, नकली पदार्थ मिलाना, और वजन बढ़ाने के लिए पत्थर या रेत मिलाना।