Police today said the drugs was seized on Saturday.
Two persons both residents of Champhai town were arrested in this connection.
Pseudo-ephedrine, legally manufactured in India, is a precursor for clandestine manufacture of Methamphetamine tablets in the laboratories in Myanmar, according to law enforcement agencies.
Crores of rupees worth of Pseudo-ephedrine had been seized in the north eastern states, especially those sharing international border with Myanmar.