Agastya (also called Agasthiar / Agastya Muni) is one of the most revered sages in Hindu tradition, especially prominent in South Indian spiritual history and Siddha medicine.

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 Who is Agasthiar?

Agasthiar is considered:

• One of the Sapta Rishis (Seven Great Sages)

• A Vedic seer

• The father of Siddha medicine

• A spiritual master who spread Vedic knowledge to South India

He is deeply respected in Tamil culture, where he is known as Agathiyar.

 Contributions

1. Siddha Medicine

Agasthiar is regarded as the founder of Siddha medical science, which includes:

• Herbal medicine

• Alchemy

• Yoga & longevity practices

• Spiritual healing

Many ancient Siddha palm-leaf manuscripts are attributed to him.