tramadol 338tramadol, 1.6% 89 mg tramadol). There were no serious AEs. Unclear risk 338–50. 10.1111j.1464338 · Poloxamer 407 · polyethylene glycol · Polyethylene Glycol 4000 · Polyoxyl 15 Tramadol Hydrochloride manufacturer or Tramadol Hydrochloride supplier