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Centella Asiatica vs Ashwagandha (KSM-66) — Which Should You Take?

Centella Asiatica

herbs

Typically £8–£25/month

Ashwagandha (KSM-66)

adaptogens

Typically £8–£25/month
Feature
Centella Asiatica
Ashwagandha (KSM-66)
Typical Dosage
300-600 mg extract daily
300-600mg daily (KSM-66 extract)
Best Form
Standardised extract (30% asiaticoside)
KSM-66
Key Benefits
6 listed
5 listed
Evidence Rating
★★★★
★★★★
Best Time
With meals for optimal absorption
Evening for sleep, or split morning/evening for stress
Upper Limit
1000 mg daily
1,200mg daily
Side Effects
5 noted
4 noted

Centella Asiatica Benefits

Enhanced wound healing and collagen synthesis
Improved skin elasticity and reducing cellulite appearance
Venous insufficiency and circulation support
Cognitive enhancement and anxiety reduction
Antioxidant and anti-inflammatory effects
Improved memory and mental clarity

Ashwagandha (KSM-66) Benefits

Reduces cortisol and perceived stress
Improves sleep quality
May increase testosterone in men
Anxiety reduction
Physical performance enhancement

Centella Asiatica Side Effects

Mild gastrointestinal upset or nausea
Dizziness or lightheadedness at high doses
Allergic reactions including contact dermatitis in sensitive individuals
Headaches in some users
Potential sedation when combined with other herbs

Ashwagandha (KSM-66) Side Effects

Drowsiness (dose-dependent)
May worsen thyroid conditions (can increase thyroid hormones)
Mild digestive upset in some people
Not recommended during pregnancy

Can You Take Centella Asiatica and Ashwagandha (KSM-66) Together?

In most cases, Centella Asiatica and Ashwagandha (KSM-66) 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.

Centella Asiatica: May potentiate sedative effects of benzodiazepines and other CNS depressants

Centella Asiatica: Possible interaction with diabetes medications affecting blood glucose

Ashwagandha (KSM-66): Thyroid medications — may increase thyroid hormone levels

Ashwagandha (KSM-66): Sedatives — additive drowsiness

Which Should You Choose?

Choose Centella Asiatica if your primary goal is: enhanced wound healing and collagen synthesis. Choose Ashwagandha (KSM-66) if your primary goal is: reduces cortisol and perceived stress.

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Frequently Asked Questions

Is Centella Asiatica better than Ashwagandha (KSM-66)?

It depends on your goals. Centella Asiatica and Ashwagandha (KSM-66) serve different purposes and are often taken together.

Can I take Centella Asiatica and Ashwagandha (KSM-66) together?

In most cases, yes. Centella Asiatica and Ashwagandha (KSM-66) 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 Centella Asiatica?

With meals for optimal absorption

What is the best time to take Ashwagandha (KSM-66)?

Evening for sleep, or split morning/evening for stress

What are the side effects of Centella Asiatica?

Mild gastrointestinal upset or nausea. Dizziness or lightheadedness at high doses. Allergic reactions including contact dermatitis in sensitive individuals. Headaches in some users. Potential sedation when combined with other herbs.

What are the side effects of Ashwagandha (KSM-66)?

Drowsiness (dose-dependent). May worsen thyroid conditions (can increase thyroid hormones). Mild digestive upset in some people. Not recommended during pregnancy.

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.

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