Cellular Energy Supplements CoQ10 PQQ Review: Evidence-Based Guide

Quick Answer

CoQ10 supplementation likely enhances lower-body strength and power in older adults, while PQQ's effects remain less clear due to limited direct evidence.

Key Takeaways

• A double-blind, randomized controlled trial with 38 older adults showed CoQ10 supplementation improved lower-body strength and power during an 8-week HIIT program [Source 3].
• No significant differences were observed in grip strength or other functional outcomes between CoQ10 and placebo groups [Source 3].
• Up to 28% of retinal ganglion cells may be lost before early visual field defects become apparent, emphasizing the need for early intervention in neurodegenerative diseases like glaucoma [Source 1].
• PQQ's role in glaucoma or neurodegenerative diseases remains speculative, with no direct studies cited in the provided sources.
• The socioeconomic impact of vision loss due to diseases like glaucoma is substantial, highlighting the importance of effective interventions [Source 1].

Clinical Evidence Deep-Dive

The study by Bagheri et al. involved 38 older adults aged 65-75, randomly assigned to CoQ10 or placebo groups, with a balanced gender distribution (Females: 8; Males: 11 in each group). Participants underwent an 8-week supervised HIIT program, with CoQ10 supplementation enhancing lower-body strength and power, as measured by the 5-repetition chair stand test (5XSST) and 30-second chair stand test (30CST). However, no significant differences were found in the Timed Up and Go (TUG) test or grip strength, indicating selective benefits of CoQ10 on certain physical functions [Source 3].

The narrative review by Hui Flora discusses the multifactorial nature of glaucoma, a neurodegenerative disease characterized by retinal ganglion cell degeneration. While elevated intraocular pressure is a known risk factor, it is neither necessary nor sufficient for glaucoma development. The review underscores the complexity of the disease and the need for comprehensive treatment strategies that may include nutraceuticals like CoQ10 and PQQ, although direct evidence for PQQ was not provided [Source 1].

Corsetti's preclinical study highlights the importance of integrating nutritional strategies, such as CoQ10, with conventional therapies like statins. Although the study focuses on the broader context of statin therapy, it suggests a potential role for CoQ10 in personalized medicine approaches, though specific metrics or outcomes related to CoQ10 were not detailed in the abstract [Source 2].

Practical Protocol

Clinical reference - consult a physician: CoQ10 supplementation in the study was not specified in terms of dosage, but typical dosages range from 100 to 200 mg per day. PQQ dosages are less well-established, and professional guidance is recommended.

FAQ

Does CoQ10 improve overall physical function in older adults? CoQ10 supplementation improved lower-body strength and power, but not grip strength or other functional outcomes, suggesting selective benefits [Source 3].

Is PQQ effective for neurodegenerative diseases like glaucoma? Direct evidence for PQQ's efficacy in glaucoma is lacking, though it may hold potential due to its role in cellular energy metabolism [Source 1].

References

[1] Vitamins and nutraceuticals in glaucoma research. Hui Flora. 2026. https://pmc.ncbi.nlm.nih.gov/articles/PMC13091925/

[2] Beyond Cholesterol Lowering: Clinical Caution, Personalization, and Nutritional Integration in Statin Therapy. Corsetti G. 2026. https://pmc.ncbi.nlm.nih.gov/articles/PMC12986533/

[3] Effects of Coenzyme Q10 Supplementation on Physical Function Adaptations to High-Intensity Interval Training in Older Adults. Bagheri N. 2025. https://pmc.ncbi.nlm.nih.gov/articles/PMC12736359/