I'm on Metformin for Diabetes, Lisinoprol for BP and Atorvastatin for cholesterol
Neither my BP or Lipids are particularly high but my GP insists it'll do me good.
The only problem I've had was the statins causing me huge problems with pain in my legs. Most nights I was taking tramadol just to get a few hours sleep. I say was as I've come off them now (against my GP's advice) and gradually I'm improving as they leave my system.
But as for BP tablets I've had no issues - I'd go and see your doc. Not every tablet suits everyone so there will be an alternative which probably doesn't give you the side effects you're suffering from.