beta blockers

  1. Im confused because someone told me they block both beta 1 and beta 2 receptors. If they block b2, isn't that defeating the purpose of the medication?
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    Joined: Sep '10; Posts: 61; Likes: 5


  3. by   caliotter3
    It is my understanding that different meds are specific for either. I would have to look a med up to know which is which.
  4. by   MunoRN
    There are non-selective beta blockers, such as timolol and propanolol, but they are usually used only as eyedrops to treat glaucoma. "Selective" beta blockers, which aren't 100% selective, particularly at higher doses, are what are typically used. 3rd generation beta blockers (coreg) are actually less selective in that they include some alpha effect.