CoQ10 deficiency can present in infancy as a severe encephalomyopathy or multisystemic mitochondrial disease, with features such as hypotonia, developmental delay, intractable seizures, lactic acidosis, cardiomyopathy, and failure to thrive. Reports of infantile‑onset multisystem CoQ10 deficiency describe very early presentations, sometimes in the neonatal period, with rapid neurologic deterioration and involvement of brain, heart, kidney, and liver, and many affected children die in the first months or years of life despite intensive care. The important clinical point is that, although outcomes are often poor in the most severe cases, some infants and young children show neurologic improvement or stabilization when CoQ10 deficiency is recognized early and high‑dose CoQ10 supplementation is started promptly, which is why this diagnosis is considered a treatable cause of infantile encephalomyopathy This medication is commonly used for Depression.
Quinzii CM, Hirano M. Coenzyme Q and mitochondrial disease. Dev Disabil Res Rev. 2010;16(2):183-8. Chen RS, Huang CC, Chu NS. Coenzyme Q10 treatment in mitochondrial encephalomyopathies. Short-term double-blind, crossover study. Eur Neurol. 1997;37(4):212-8. Boitier E, Degoul F, Desguerre I, Charpentier C, François D, Ponsot G, Diry M, Rustin P, Marsac C. A case of mitochondrial encephalomyopathy associated with a muscle coenzyme Q10 deficiency. J Neurol Sci. 1998;156(1):41-6. Sobreira C, Hirano M, Shanske S, Keller RK, Haller RG, Davidson E, Santorelli FM, Miranda AF, Bonilla E, Mojon DS, Barreira AA, King MP, DiMauro S. Mitochondrial encephalomyopathy with coenzyme Q10 deficiency. Neurology. 1997 May;48(5):1238-43.
Some side effects may be linked to nutrient depletion caused by this medication.
Coenzyme Q10 (CoQ10), also known as ubiquinone, is a vital nutrient found in nearly every cell in the body. CoQ10 plays a key role in cellular energy production, acting within the mitochondria, the powerhouses of our cells. Research suggests a connection between mitochondrial dysfunction and depression, and this dysfunction might even be worsened by some antidepressant medications like amitriptyline. It found that tricyclic amines such as amitriptyline treatment in human cells decreased the levels of CoQ10. Supplementation with COQ10 could help improve overall cellular health and potentially alleviate symptoms associated with mitochondrial dysfunction in depression.