we explore the detailed concept of Chaturvidha Rasayana in Rasa Shastra, which includes four important preparations – Kharaliya, Parpati, Kupipakwa, and Pottali Rasayana.

This lecture covers all essential academic and practical points required for BAMS students and Ayurvedic enthusiasts.

🔶 Introduction

Chaturvidha Rasayana refers to four classical pharmaceutical preparations described in Ayurvedic Rasa Shastra. These preparations are known for their potency, quick action, and long shelf life.

🔶 Definition

Chaturvidha Rasayana includes four types of mercurial formulations prepared using specific procedures to enhance therapeutic efficacy and stability.

🔶 Importance

✔️ Highly potent and fast-acting medicines

✔️ Require smaller doses

✔️ Long shelf life

✔️ Useful in chronic and difficult diseases

✔️ Enhanced bioavailability due to Samskara

🔹 1️⃣ Kharaliya Rasayana

Prepared by trituration (mardana) in a khalva yantra.

Examples:

• Shwasakuthara Rasa

• Vatavidwansa Rasa

🔹 2️⃣ Parpati Rasayana

Prepared by melting kajjali and spreading into thin flakes (parpati form).

Examples:

• Loha Parpati

• Sudha Parpati

🔹 3️⃣ Kupipakwa Rasayana

Prepared in a glass bottle (kupi) with gradual heating process.

Examples:

• Rasasindura

• Rasa Karpura

🔹 4️⃣ Pottali Rasayana

Prepared by tying kajjali and other ingredients in cloth and subjecting to heating.

Examples:

•

Tamragarbha Pottali

• Lohagarbha Pottali