SUBUTEX (buprenorphine) sublingual tablet is really an uncoated oval white flat bevelled edged tablet, debossed with an alphanumeric term identifying the item and power on just one side. It includes buprenorphine HCl, a partial agonist with the mu-opioid receptor, which is available in two dosage strengths, 2 mg buprenorphine and 8 mg buprenorphine