Alpha-2 Adrenergic Agonists
There are two alpha-2-adrenergic agonists that have some evidence as pain relievers: tizanidine (Zanaflex®) and clonidine (Catapres®). There are some studies showing that tizanidine can be effective for tension-type headache, back pain, neuropathic pain and myofascial pains. Clonidine has been used to treat neuropathic pain that is not responding to other treatment or therapy.
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