Compare Supplements

Side-by-side comparison of 2 supplements

☕

Caffeine

9.5/10moderate

🔋

PQQ

8/10high

Evidence

Evidence Score9.5/10

Studies: 40+

Meta-analyses: 23

Evidence Score8/10

Studies: 35+

Meta-analyses: 0

Dosage & Timing

Dosage:

100-200mg

Best Time:

Morning, 30-60 minutes before exercise

Can take on empty stomach

Form:

Pill/capsule for precise dosing

Dosage:

10-20mg

Best Time:

Morning with breakfast

Take with food

Form:

BioPQQ capsules (most studied form)

What You'll Notice

👁️ Increased Alertness95%

15-45 minutes

🎯 Improved Focus85%

30-60 minutes

🏃 Better Exercise Performance80%

30-60 minutes

🧠 Cognitive Improvement55%

4-8 weeks

⚡ Improved Energy50%

4-8 weeks

😴 Better Sleep45%

4-8 weeks

Safety

moderate safety rating

Contraindications:

Severe anxiety disorders
Uncontrolled high blood pressure
Heart arrhythmias

Drug Interactions:

Stimulant medications (Adderall, etc.)
MAO inhibitors
Certain antibiotics (Cipro)

Side Effects:

Jitteriness/anxietyInsomniaIncreased heart rate

high safety rating

Contraindications:

Known allergy or hypersensitivity to PQQ or related compounds

Drug Interactions:

No significant interactions known

Side Effects:

HeadacheInsomnia

Works Well With

L-Theanineenhances

Creatinecomplementary

Alpha-GPCstacks-well

CoQ10enhances

Acetyl-L-Carnitinecomplementary

Urolithin Acomplementary

How They Work Together

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Compare Supplements

Caffeine

PQQ

Evidence

Dosage & Timing

What You'll Notice

Safety

Works Well With

Categories

How They Work Together

Compare Supplements

Caffeine

PQQ

Evidence

Dosage & Timing

What You'll Notice

Safety

Works Well With

Categories

How They Work Together