Alpha-blockers used to treat an enlarged prostate (BPH) can also cause hypotension, and they should be used with caution. Discuss the risks with your doctor if you are taking Cardura (doxazosin), Flomax (tamsulosin), Hytrin (terazosin) or Uroxatral (alfuzosin). Taking injections. You will give yourself shots using a needle and syringe. Your doctor or nurse will show you how to get the correct amount of insulin into the syringe and how to inject it under your skin. Some people use an insulin pen... read more