Baba Ramdev-led Patanjali Ayurved has been served a legal notice by a Delhi-based law firm that accuses it of "deceptively" using a "non-vegetarian" ingredient in a product carrying a "green" sign. The company is accused of using Samudra Fen, which is a non-vegetarian ingredient, in Divya Dant Manjan. Samudra Fen is an animal product obtained from the bones of cuttlefish.