To evaluate the feasibility of subantimicrobial -dose (SD) doxycycline to improve outcomes of
nonsurgical management of lateral elbow tendinopathy via matrix metalloproteinase (MMP)
inhibition as well as evaluate if participants will be compliant to with prescribed
medication and exercise treatment. Our working hypothesis is that patients with lateral elbow
tendinopathy will be receptive to treatment with SD-doxycycline and compliant with the
prescribed treatment.