Cordyceps vs Quercetin
Adaptogen vs Immune · evidence-backed comparison
- • Quercetin has the stronger evidence base (moderate (some rcts)).
- • Cordyceps has the broader effect profile across the 9 effect categories.
- • Quercetin is cheaper per serving ($0.35 vs $0.60).
- • Cordyceps has higher bioavailability (better absorption).
Side-by-side traits
| Trait | Cordyceps | Quercetin |
|---|---|---|
Category | Adaptogen | Immune |
Active compound | Cordycepin, polysaccharides | Quercetin |
Form available | Capsule, Powder | Capsule, Tablet |
Source | fungal | plant |
Typical dose | 1–3 g daily | 500–1000 mg daily |
Dose range | 1–3 g | 500–1000 mg |
Loading protocol | — | — |
Best taken with | with food | vitamin C (potentiates) |
Best time of day | morning | any |
Bioavailability How efficiently the body absorbs and utilizes the compound. | Moderate (3/5) | Low (2/5) |
Onset time | Cumulative: 3–6 weeks | Cumulative: 2–6 weeks |
Half-life | — | ~17 hours |
Evidence level Quality and quantity of human research. | Limited (small studies) | Moderate (some RCTs) |
Overall effect Subjective effect magnitude. | Low (2/5) | 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) | Very Low (1/5) |
Sleep quality | Very Low (1/5) | Very Low (1/5) |
Immunity | High (4/5) | High (4/5) |
Recovery Post-exercise recovery support. | Moderate (3/5) | Moderate (3/5) |
Longevity / healthspan | Moderate (3/5) | High (4/5) |
Safety rating 5 = exceptionally well-tolerated; 1 = significant risk profile. | High (4/5) | High (4/5) |
Price per serving Approximate USD per typical daily dose. | $0.60 | $0.35 |
Vegan friendly | Yes | Yes |
Gluten free | Yes | Yes |
3rd-party tested | Yes | Yes |
About Cordyceps
Medicinal mushroom that may improve VO2 max and oxygen utilization in untrained adults. Best evidence is for endurance and immune support.
About Quercetin
Polyphenol with antihistamine and senolytic properties. Common in protocols for allergies and viral infections; pair with vitamin C.
Vetted brands, third-party testing, ships worldwide.
Vetted brands, third-party testing, ships worldwide.
Cordyceps safety
Common side effects:
- • Mild GI upset
- • Dry mouth
Avoid if:
- • Bleeding disorders
- • Autoimmune disease
Drug interactions:
- • Anticoagulants
- • Immunosuppressants
Quercetin safety
Common side effects:
- • Headache
- • Tingling extremities (high doses)
Avoid if:
- • Kidney disease
Drug interactions:
- • Cyclosporine
- • Quinolone antibiotics
- • Anticoagulants
Common uses
- • Endurance
- • Immune support
- • Energy
- • Lung function
Stacks well with: Lion's Mane Mushroom
Common uses
- • Seasonal allergies
- • Immune support
- • Senescent cell clearance
Stacks well with: Vitamin C, Zinc
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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.