Slaughter and May and Allen & Overy (A&O) have taken lead roles on GlaxoSmithKline’s (GSK’s) €470m (£393m) divestment of a portfolio of European over-the-counter (OTC) healthcare products to Omega Pharma.

A&O took the lead for Dutch OTC specialist Omega, fielding a five-partner team led by Antwerp M&A partner Hans Kets, with Frankfurt corporate partner Matthias Horn and employment partner Hans-Peter Low also advising.