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

Astragalus

adaptogens

Typically £8–£25/month

Ashwagandha (KSM-66)

adaptogens

Typically £8–£25/month
Feature
Astragalus
Ashwagandha (KSM-66)
Typical Dosage
500–1,500 mg daily
300-600mg daily (KSM-66 extract)
Best Form
Dried root
KSM-66
Key Benefits
6 listed
5 listed
Evidence Rating
★★★★
★★★★
Best Time
With meals, split into 2–3 doses
Evening for sleep, or split morning/evening for stress
Upper Limit
3,000 mg daily
1,200mg daily
Side Effects
4 noted
4 noted

Astragalus Benefits

Enhanced immune function
Increased energy and stamina
Stress adaptation
Anti-inflammatory support
Potential telomerase activation
Cardiovascular health support

Ashwagandha (KSM-66) Benefits

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

Astragalus Side Effects

Generally well tolerated at recommended doses
Possible mild digestive upset
Rare allergic reactions in susceptible individuals
May cause drowsiness in sensitive persons

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 Astragalus and Ashwagandha (KSM-66) Together?

In most cases, Astragalus 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.

Astragalus: May potentiate immunosuppressive medications

Astragalus: Possible interaction with blood thinners; consult healthcare provider

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

Ashwagandha (KSM-66): Sedatives — additive drowsiness

Which Should You Choose?

Choose Astragalus if your primary goal is: enhanced immune function. Choose Ashwagandha (KSM-66) if your primary goal is: reduces cortisol and perceived stress.

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Frequently Asked Questions

Is Astragalus better than Ashwagandha (KSM-66)?

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

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

In most cases, yes. Astragalus 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 Astragalus?

With meals, split into 2–3 doses

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 Astragalus?

Generally well tolerated at recommended doses. Possible mild digestive upset. Rare allergic reactions in susceptible individuals. May cause drowsiness in sensitive persons.

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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