Amlodipine
"Wow. Doc gave me 5mg to be taken daily. Took it for one month - a month that shall live in infamy. Extreme eye pressure, dizziness, affected my gait while walking, and I've never been so tired in my life. I'm a 63 year old athlete who cross country skis, skates, and roller skis. I knew something was drastically wrong and stopped it cold turkey. Within 24 hours I had no dizziness, my energy was better. By day 2, no pressure behind the eyes. I'm sure experiences vary depending on your body chemistry, but this stuff was killing me a day at a time. Hope your experience is better than mine, but I'd encourage you to listen to your body."