Mitigating Toxic Impact: The Role of Coenzyme Q10 in Post-Exposure Protection

Inclusion Criteria: * On Feb. 3, 2023, lived within 10 miles of the East Palestine, OH train derailment (closer in will receive preference). Others who were in the area for toxin mitigation and other reasons and show compatible symptoms will also be eligible. * Meets Kansas symptom criteria for multi-symptom illness - originally defined for Gulf War Illness (has persistent symptoms, lasting greater than six months, that are of \>mild severity in at least three of the six domains of fatigue/sleep, pain, neurological/cognitive/mood, gastrointestinal, respiratory and dermatologic). At least some symptoms must be new or worsened since the derailment. * Access to internet and smart phone or computer for remote Qualtrics survey participation. * Willing to perform the stipulated study elements. * Took ≥80% of run-in soft gels. Exclusion Criteria: * Anticipated move from the area or other anticipated obstacle to participating for study duration. * Participating in another clinical trial. * Has a pre-existing health condition expected to produce significant and variable fluctuating symptoms (e.g. chronic infection and/or active cancer other than non-melanoma skin cancer). * Contraindications to CoQ10, such as use of coumadin (although an interaction with CoQ10 is controversial).