SP
StackPedia
All Comparisons

Fadogia Agrestis vs L-Theanine — Which Should You Take?

Fadogia Agrestis

herbs

Typically £8–£25/month

L-Theanine

nootropics

Typically £8–£25/month
Feature
Fadogia Agrestis
L-Theanine
Typical Dosage
300-600mg daily
100-200mg daily
Best Form
Stem extract (10:1)
L-Theanine (Suntheanine)
Key Benefits
5 listed
5 listed
Evidence Rating
★★★★★
★★★★
Best Time
Morning with food; often cycled 8 weeks on, 2-4 weeks off
With caffeine for focus, or evening for relaxation
Upper Limit
600mg daily (no established safe upper limit in humans)
400mg daily
Side Effects
5 noted
3 noted

Fadogia Agrestis Benefits

May support luteinising hormone (LH) secretion
Traditionally used as an aphrodisiac in West African medicine
Potential testosterone support (animal models only)
Often stacked with Tongkat Ali for hormonal optimisation
Contains alkaloids and saponins with bioactive potential

L-Theanine Benefits

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

Fadogia Agrestis Side Effects

Potential testicular toxicity at high doses (observed in rats)
No long-term human safety data available
Possible heavy metal contamination in unregulated products
May affect liver enzymes — monitor with bloodwork
Cycling recommended due to lack of chronic safety data

L-Theanine Side Effects

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

Can You Take Fadogia Agrestis and L-Theanine Together?

In most cases, Fadogia Agrestis 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.

Fadogia Agrestis: Hormone therapies and TRT — may have additive androgenic effects

Fadogia Agrestis: Liver-metabolised medications — theoretical CYP interaction risk

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

L-Theanine: Blood pressure medications — additive hypotensive effect

Which Should You Choose?

Choose Fadogia Agrestis if your primary goal is: may support luteinising hormone (lh) secretion. 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 Fadogia Agrestis better than L-Theanine?

It depends on your goals. Fadogia Agrestis and L-Theanine serve different purposes and are often taken together.

Can I take Fadogia Agrestis and L-Theanine together?

In most cases, yes. Fadogia Agrestis 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 Fadogia Agrestis?

Morning with food; often cycled 8 weeks on, 2-4 weeks off

What is the best time to take L-Theanine?

With caffeine for focus, or evening for relaxation

What are the side effects of Fadogia Agrestis?

Potential testicular toxicity at high doses (observed in rats). No long-term human safety data available. Possible heavy metal contamination in unregulated products. May affect liver enzymes — monitor with bloodwork. Cycling recommended due to lack of chronic safety data.

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.