Neimeth International Pharmaceuticals Plc. is the resultant Company from the Mazi Sam I. Ohuabunwa led Management-Buy-Out of the 60% equity holding of Pfizer Inc. New York, USA in Pfizer Products Plc. 

This Management-Buy-Out took place in May 1997 when Pfizer Inc. in pursuit of its global repositioning strategy, divested 60% equity in Pfizer Products Plc. in favour of the existing management.

Before the brand name Neimeth International Pharmaceuticals Plc.,the company had operated in Nigeria for 40 years, manufacturing, marketing, and distributing Pfizer brands of pharmaceutical and veterinary products in tablets, capsules, ointment/cream, powder, injectables, and oral liquid forms. During the 40 year period (1957-1997), the company established the first pharmaceutical manufacturing plant in Nigeria at Aba, which was destroyed during the Nigerian civil war. It then set up and opened the most modern pharmaceutical plant in the West African sub-region in 1976 at Oregun, Lagos. These represent great milestones for a company that started as a trading venture in 1957 at a location in Ebute Metta, Lagos.