New Delhi, June 26 -- Just months after introducing its weight-loss drug Mounjaro in India, US-based Eli Lilly is set to roll out a more convenient, pen-filled version-escalating its rivalry with Novo Nordisk in the country's nascent but high-potential obesity drug market.

The US-based drugmaker announced on Thursday that it has received market authorization from the Central Drugs Standard Control Organisation (CDSCO) to launch the Mounjaro KwikPen, a multi-dose, single-patient-use prefilled pen designed for once-weekly administration. Until now, the drug was only available in injectable vials, in two dosage strengths.

The full dosage range will soon be available in India, the company said.

"With this approval, all six dosage options f...