New Delhi, Apr 2 (UNI) In a contempt case against Baba Ramdev and Acharya Balakrishna regarding the criticism of Allopathy medicine, Solicitor General of India (SG) Tushar Mehta, appearing for the Union of India, on Tuesday argued that Allopathy is not beyond criticism and that a person cannot be stopped from saying that Ayurveda is more efficient.