Coenzyme Q10 (Ubiquinone/Ubiquinol) is a fat-soluble, vitamin-like quinone compound endogenously synthesized in the human body and obtained from the diet. It is a critical component of the mitochondrial electron transport chain (Complex I, II, and III) for ATP production and a potent lipophilic antioxidant. The 100mg strength is a common therapeutic dose used for supplementation in deficiency states and various clinical conditions.
Adult: 100mg to 200mg per day, in 1-2 divided doses, with meals containing fat.
Note: Take with or immediately after a meal containing fat (e.g., nuts, oil, avocado) to enhance absorption. Swallow capsule/tablet whole with water. Do not crush or chew.
1. **Mitochondrial Function**: Serves as an essential electron carrier in the inner mitochondrial membrane, shuttling electrons from Complex I (NADH dehydrogenase) and Complex II (succinate dehydrogenase) to Complex III (cytochrome bc1 complex) in the electron transport chain, facilitating ATP synthesis via oxidative phosphorylation. 2. **Antioxidant Activity**: In its reduced form (Ubiquinol), it is a potent lipid-soluble antioxidant that protects cell membranes, lipoproteins, and mitochondrial DNA from free radical-induced oxidative damage. It regenerates other antioxidants like Vitamin E. 3. **Cell Signaling & Gene Expression**: Influences expression of genes involved in inflammation (NF-ÎșB), apoptosis, and cellular metabolism.
Pregnancy: Category B (US FDA). Animal studies show no risk, but human data is limited. Use only if potential benefit justifies potential risk. Not recommended for routine use.
Driving: No effect on ability to drive or operate machinery. Dizziness is a rare side effect.
| Warfarin & other Vitamin K Antagonists | CoQ10 has structural similarity to Vitamin K and may decrease anticoagulant effect, requiring INR monitoring. | Major |
| Blood Pressure Lowering Drugs (Beta-blockers, ACE inhibitors, etc.) | Additive hypotensive effect. | Moderate |
| Statins (Atorvastatin, Simvastatin, etc.) | Statins inhibit HMG-CoA reductase, reducing endogenous CoQ10 synthesis. Supplementation may ameliorate statin-induced myopathy. | Moderate |
| Chemotherapy (Doxorubicin, Daunorubicin) | Theoretical concern that antioxidant effect may interfere with pro-oxidant chemotherapeutic mechanism. Evidence is conflicting; consult oncologist. | Moderate |
| Insulin, Oral Hypoglycemics | Potential additive blood glucose-lowering effect. | Moderate |
Same composition (Coenzyme Q10 (100mg)), different brands: