Safety of Cultured Allogeneic Adult Umbilical Cord Derived Mesenchymal Stem Cell Exosomes for Parkinson's Disease

This study is evaluating the safety of a treatment using exosomes (tiny particles released by stem cells) derived from umbilical cord tissue for patients with Parkinson's disease. The goal is to determine whether this therapy is safe and tolerable before exploring its effectiveness. **You may be eligible if...** - You have been diagnosed with Parkinson's disease - You are willing and able to understand and sign the consent form **You may NOT be eligible if...** - You have an active infection - You have active cancer - You have chronic failure of multiple organ systems - You are pregnant - You are a pre-menopausal woman not using contraception - You have had an organ transplant - You have a known allergy to sulfur - You are currently using blood-thinning (anticoagulant) medications - You are actively abusing drugs Talk to your doctor to see if this trial is right for you.