The film's final collection grossed over ₹125 crore from worldwide box office in its final run. The film's Telugu version Raja Narasimha ran for 75 days in Andhra Pradesh box office. And grossed $1,024,670 in the UAE and A$19,855 (₹9.79 lakh) in Australia in three weeks, $13,392 (₹9.3 lakh) in Canada in four weeks, and £34,334 (₹31.32 lakh) in the UK in five weeks. As of 21 June, Madhura Raja is the fifth best Malayalam grosser of 2019 outside Kerala. In 17 days, it grossed $1.822 million (₹12.72 crore) from overseas territories (of which $1.655 million (₹11.5 crore) was from UAE-GCC region alone). The film's three-day total from Bengaluru stands at a whopping ₹48.27 lakhs, making it the third highest grosser in the city that year. In Tamil Nadu, the film has garnered close to ₹36 lakhs gross in three days, which is again the best opening for Mammootty. The opening day in UAE gross of ₹3.03 cr is Mammootty's career-best in the region. The film collected ₹9.5 crores in opening day in Worldwide box office. At USA, UAE and UK box office, the film got released in 216 locations. In the USA, the film secured the second biggest release for a Malayalam film with 58 locations. The film got released in theatres on 12 April 2019. Filming was completed in three schedules with the second schedule being wrapped up in December 2018.
The action choreographer of the film was Peter Hein, who had worked previously with Vysakh in Pulimurugan (2016). Vysakh retained Shaji Kumar and John Kutty, who did cinematography and editing for Odiyan. Tamil actor Jai also plays an important character, and Madhura Raja marks his debut in Malayalam cinema. Mammootty reprises the role Raja he played in the 2010 film Pokkiri Raja. The principal production commenced in Cochin in August 2018. Madhura Raja was produced by Nelson Ipe under the banner Nelson Ipe Cinemas, made on a budget of ₹27 crore. Sunny Leone as herself (Cameo appearance in item song "Moha Mundiri").Parvathy Nambiar as Daisy, Balachandran's wife (Cameo appearance).Suraj Venjaramoodu as CI Idivettu Sugunan (Cameo appearance).Narain as SI Balachandran ( Cameo appearance).Kailash as Rasool, Lissy's and Amala's friend.Balachandran Chullikkadu as Raja's Lawyer.Kalabhavan Shajohn as Peruchazhi Perumal.Santhosh Keezhattoor as Poulo Varghese, police constable.Thesni Khan as Ramani, Manoharan's wife.
Vinaya Prasad as Lillykutty Teacher, Krishnan's Wife.Shamna Kasim as Amala, Krishnan's Daughter.Mahima Nambiar as Meenakshi, Vasanthi's Sister, Jai's lover.Mammootty as Kunnath Raja / Madhura Raja.