UPDATE 2-Adcock mulls Nigeria expansion, H1 profit flat

2 billion rand from 1.9 billion * Eyes further expansion in Africa (Recasts, adds analyst comment, shares, Nigeria expansion) By Tiisetso Motsoeneng JOHANNESBURG, May 24 (Reuters) - Adcock Ingram (AIPJ.J Adcock, which scrapped a bid for rival Cipla...