Hyperforin, an anti-inflammatory constituent from St. Johnʼs wort, inhibits microsomal prostaglandin E2 synthase-1 and suppresses prostaglandin E2 formation in vivo - Koeberle, A; Rossi, A; Bauer, J; Dehm, F; Verotta, L; Northoff, H; Sautebin, L; Werz, O (Front Pharmacol, 2011)