SP
StackPedia
All Comparisons

PQQ 20mg vs L-Theanine — Which Should You Take?

PQQ 20mg

nootropics

Typically £8–£25/month

L-Theanine

nootropics

Typically £8–£25/month
Feature
PQQ 20mg
L-Theanine
Typical Dosage
10-20mg daily
100-200mg daily
Best Form
Capsule
L-Theanine (Suntheanine)
Key Benefits
5 listed
5 listed
Evidence Rating
★★★★★
★★★★
Best Time
With meals to enhance absorption
With caffeine for focus, or evening for relaxation
Upper Limit
20mg daily
400mg daily
Side Effects
3 noted
3 noted

PQQ 20mg Benefits

Mitochondrial energy production
Cognitive enhancement
Neuroprotection
Antioxidant support
Cellular recovery

L-Theanine Benefits

Calm focus without sedation
Reduces caffeine jitters when combined
Promotes alpha brain waves (relaxed alertness)
May improve sleep quality
Anxiety reduction

PQQ 20mg Side Effects

Generally well-tolerated at recommended doses
Mild gastrointestinal discomfort in sensitive individuals
Headaches reported rarely

L-Theanine Side Effects

Very few — one of the safest supplements
Mild drowsiness at high doses
May lower blood pressure slightly

Can You Take PQQ 20mg and L-Theanine Together?

In most cases, PQQ 20mg and L-Theanine can be taken together safely. However, always check the interactions section of each supplement and consult a healthcare professional if you take medication or have existing health conditions.

PQQ 20mg: Limited known interactions

PQQ 20mg: May potentiate effects of other mitochondrial-supporting compounds

L-Theanine: Caffeine — synergistic (the classic nootropic stack)

L-Theanine: Blood pressure medications — additive hypotensive effect

Which Should You Choose?

Choose PQQ 20mg if your primary goal is: mitochondrial energy production. Choose L-Theanine if your primary goal is: calm focus without sedation.

Affiliate links — we may earn a small commission at no extra cost to you.

Frequently Asked Questions

Is PQQ 20mg better than L-Theanine?

It depends on your goals. PQQ 20mg and L-Theanine serve different purposes and are often taken together.

Can I take PQQ 20mg and L-Theanine together?

In most cases, yes. PQQ 20mg and L-Theanine can be taken together safely. However, always check for specific interactions and consult a healthcare professional if you take medication.

What is the best time to take PQQ 20mg?

With meals to enhance absorption

What is the best time to take L-Theanine?

With caffeine for focus, or evening for relaxation

What are the side effects of PQQ 20mg?

Generally well-tolerated at recommended doses. Mild gastrointestinal discomfort in sensitive individuals. Headaches reported rarely.

What are the side effects of L-Theanine?

Very few — one of the safest supplements. Mild drowsiness at high doses. May lower blood pressure slightly.

How We Compare Supplements

This comparison is based on published clinical research, peer-reviewed studies from PubMed, and established nutritional science. We evaluate dosages based on clinically-effective amounts, not manufacturer recommendations. Benefits listed have at least moderate evidence from human studies. When evidence is limited or conflicting, we note this.

Disclaimer: This comparison is for educational purposes only and is not medical advice. Always consult a qualified healthcare professional before starting any supplement, especially if you take medication or have existing health conditions.

Related Comparisons

Popular Supplements on Amazon

As an Amazon Associate we may earn from qualifying purchases.