Thethan Kottai

A Siddha Staple for Skin, Eyes & Digestion.

Thethan Kottai — the seeds of Cassia tora (Sickle Senna) — is a well-known medicinal herb in Tamil Siddha and Ayurvedic traditions. These small but potent seeds have been used for centuries to treat skin diseases, improve vision, support digestion, and detoxify the liver. The plant grows abundantly across South India and has been a trusted remedy in rural Tamil households for generations.

Nattrinai's Thethan Kottai is carefully sourced, cleaned, and packed to preserve its full therapeutic potency.

Key Benefits

• Skin health — one of the most effective traditional remedies for fungal skin infections, ringworm, eczema, and itching; applied topically as a paste for direct skin relief
• Eye health — traditionally used in Siddha medicine to improve vision, reduce eye strain, and treat eye infections; contains anthraquinones that support ocular health
• Liver support & detox — helps cleanse and strengthen the liver; used in Siddha formulations for jaundice and liver disorders
• Digestive health — a gentle natural laxative that relieves constipation and supports healthy bowel function
• Anti-inflammatory — natural compounds reduce inflammation both internally and when applied topically
• Antimicrobial — proven antibacterial and antifungal properties make it effective against a range of skin and gut infections

How to Use

For skin conditions, dry roast and grind Thethan Kottai to a fine powder. Mix with coconut oil or sesame oil and apply to affected areas. For internal use, mix a small amount of the powder in warm water and consume as directed by a qualified Siddha practitioner.

Consult a qualified Siddha or Ayurvedic practitioner before internal use. Not recommended during pregnancy.

Small seed. Powerful healing. The Nattrinai way.