RecruitingPhase 2Drug trialEffects of Oral Tranexamic Acid Following Total Knee ArthroplastyThe primary purpose of this study is to evaluate postoperative pain. Secondary outcomes evaluated in this study will include range of motion (ROM), opioid consumption, and ambulation. Each outcome measure will be evaluated, oral tranexamic acid (TXA) in the experiment arm and placebo in the control arm, after total knee arthroplasty (TKA) at postoperative days 0-3, and weeks 1, 2, 6, and 12.