From: The pharmacological effect of BGC20-1531, a novel prostanoid EP4 receptor antagonist, in the Prostaglandin E2 human model of headache
Placebo plus PGE2
BGC20-1531 200 mg plus PGE2
BGC20-1531 400 mg plus PGE2
Incidence of immediate headache
6
7
Incidence of delayed headache
1