Pharmaceutical preparation for treating or preventing glaucoma or ocular hypertension, conta¬i¬ning 0.0003-0.01% (w/v) of (6-{[4-(pyrazol-1-yl)benzyl](pyridin-3-ylsulfonyl)aminomethyl}py¬ri¬din-2-yl amino) isopropyl acetate or a salt thereof. Table: 4