Ensuring the Safety of Indian Herbal Drugs: A Comprehensive Assessment of Heavy Metal Contaminations with Emphasis on Lead, Arsenic and Cadmium

Background This study addresses the critical concern of heavy metal contamination in medicinal plants, with potential health risks such as renal failure and chronic toxicity. The World Health Organization advocates stringent control of heavy metals, including lead (Pb), arsenic (As), and cadmium (Cd), in herbal medicines to ensure safety, with recommended limits emphasizing their toxicity even at low concentrations (Pb: 10 mg/kg, As: 10 mg/kg, Cd: 0.3 mg/kg). Methods and Results Focusing on Shatavari ( Asparagus racemosus ), Ashoka ( Saraca asoca ), Ashwagandha ( Withania somnifera ), and Safed Musli ( Chlorophytum borivilianum ), this research, utilizing ICP-MS for heavy metals analysis, revealed Pb concentrations within safe limits across all samples, and As was absent in Shatavari and Ashoka samples. Cd concentrations in all drugs were below the 0.080 mg/kg limit of detection, highlighting the method's sensitivity. Conclusion The study affirms that heavy metal concentrations in the studied herbal drugs are within acceptable limits, reinforcing their safety. This research provides vital insights, emphasizing the necessity for ongoing monitoring and adherence to international standards in comprehensive pharmacological and toxicological evaluations, ensuring the well-being of consumers.