If you're interested in watching "Premam," I recommend exploring legitimate platforms like Amazon Prime Video, Disney+ Hotstar, or purchasing the DVD/ digital copy from authorized sources.
As for the Tamil dubbed version on Tamilyogi, I must remind you that Tamilyogi is a piracy website that provides unauthorized downloads of Tamil and other language films. While I won't encourage you to download content from such websites, I can tell you that the Tamil dubbed version of "Premam" is indeed available on Tamilyogi.
"Premam" is a 2015 Indian Malayalam film written, directed, and edited by Alphonse Putharen. The film stars Nivin Pauly, Sai Pallavi, and Madonna Sebastian.