CoQ10 (Ubiquinol) vs Iodine (Potassium Iodide)
Heart vs Mineral · evidence-backed comparison
- • Iodine (Potassium Iodide) has the stronger evidence base (strong (multiple rcts / meta-analyses)).
- • CoQ10 (Ubiquinol) has the broader effect profile across the 9 effect categories.
- • Iodine (Potassium Iodide) is cheaper per serving ($0.05 vs $0.90).
- • CoQ10 (Ubiquinol) has a slightly cleaner safety profile.
- • Iodine (Potassium Iodide) has higher bioavailability (better absorption).
Side-by-side traits
| Trait | CoQ10 (Ubiquinol) | Iodine (Potassium Iodide) |
|---|---|---|
Category | Heart | Mineral |
Active compound | Ubiquinol (reduced form) | Potassium iodide |
Form available | Softgel, Capsule | Capsule, Tablet, Liquid |
Source | synthetic | mineral |
Typical dose | 100–200 mg daily | 150 mcg daily |
Dose range | 100–200 mg | 150–300 mcg |
Loading protocol | — | — |
Best taken with | fat-containing meal | with food |
Best time of day | morning | morning |
Bioavailability How efficiently the body absorbs and utilizes the compound. | High (4/5) | Very High (5/5) |
Onset time | Cumulative: 4–12 weeks | Cumulative: 2–8 weeks |
Half-life | ~33 hours | — |
Evidence level Quality and quantity of human research. | Moderate (some RCTs) | Strong (multiple RCTs / meta-analyses) |
Overall effect Subjective effect magnitude. | Moderate (3/5) | Low (2/5) |
Muscle / strength | Low (2/5) | Very Low (1/5) |
Physical energy | High (4/5) | Low (2/5) |
Focus / cognition | Low (2/5) | Very Low (1/5) |
Mood / stress | Low (2/5) | Low (2/5) |
Sleep quality | Very Low (1/5) | Very Low (1/5) |
Immunity | Low (2/5) | Low (2/5) |
Recovery Post-exercise recovery support. | Moderate (3/5) | Very Low (1/5) |
Longevity / healthspan | High (4/5) | Low (2/5) |
Safety rating 5 = exceptionally well-tolerated; 1 = significant risk profile. | Very High (5/5) | Moderate (3/5) |
Price per serving Approximate USD per typical daily dose. | $0.90 | $0.05 |
Vegan friendly | Yes | Yes |
Gluten free | Yes | Yes |
3rd-party tested | Yes | Yes |
About CoQ10 (Ubiquinol)
Mitochondrial electron carrier depleted by statins, aging, and intense training. Ubiquinol is 3× more bioavailable than ubiquinone.
About Iodine (Potassium Iodide)
Essential for thyroid hormone synthesis. Iodized salt usually covers needs; supplement only if confirmed deficient.
Vetted brands, third-party testing, ships worldwide.
Vetted brands, third-party testing, ships worldwide.
CoQ10 (Ubiquinol) safety
Common side effects:
- • Generally none
- • Mild GI upset
Avoid if:
- • Warfarin (may reduce effect)
Drug interactions:
- • Warfarin
- • Blood pressure meds
- • Chemotherapy
Iodine (Potassium Iodide) safety
Common side effects:
- • Acne
- • Hyperthyroidism (high doses)
- • Goitre (paradox)
Avoid if:
- • Hyperthyroid
- • Graves' disease
- • Hashimoto's (caution)
Drug interactions:
- • Lithium
- • Anti-thyroid drugs
Common uses
- • Heart health
- • Statin side effects
- • Energy / fatigue
- • Migraine prevention
Stacks well with: pqq, Fish Oil (Omega-3 EPA/DHA)
Common uses
- • Thyroid support
- • Pregnancy
- • Iodine deficiency
Stacks well with: Selenium (Selenomethionine)
Related comparisons
Medical disclaimer
SupplementDuel is for educational purposes only and is not medical advice. Consult a physician before starting, stopping, or combining supplements — especially if you are pregnant, breastfeeding, take prescription medication, or have a chronic condition.