Mood/Sleep/Hormonal

Ashwagandha

Ayurvedic herb that may reduce stress, improve sleep, and lower cortisol in adults under chronic stress.

Ashwagandha

Ayurvedic herb that may reduce stress, improve sleep, and lower cortisol in adults under chronic stress.

score

evidence

Caution

risk

Proven Benefits

01Reduces stress and anxiety

02Improves sleep quality

03Lowers cortisol

04May reduce fatigue

05May improve fasting glucose

06May increase testosterone

07May improve focus under stress

Chemical Forms

Recommended

Standardized root extract (2.5-5% withanolides)
Full-spectrum root extract
Standardized root+leaf extract with disclosed withaferin A

Avoid

Non-standardized root powder capsules (variable potency; gram doses needed)
Unspecified 'whole plant' blends (unclear active content)
Leaf-heavy extracts with undisclosed withaferin A (less safety clarity)

Expert Note

Most positive trials use standardized extracts that deliver predictable withanolide doses, usually in the 240-600 mg/day range. Plain powders vary widely in potency and often require gram doses. Root-focused extracts have the clearest traditional use; root+leaf products are reasonable only when standardization and contaminant testing are transparent.

Protocol

Amount

300-600 mg standardized extract

Frequency

Once daily or split into 2 doses

When

With food to reduce stomach upset; evening is often best if it makes you drowsy, otherwise any consistent time works.

Condition-Based Dosing

High perceived stress

300 mg twice daily or 600 mg once daily for 6-8 weeks— Most common studied range for standardized extracts.

Sleep-focused use

300-600 mg in the evening for 6-8 weeks— Tends to help most when sleep problems are stress-related.

Using plain root powder

3-6 g daily, split into 2 doses— Less predictable potency than standardized extract; extracts are usually more practical.

Men with low-normal testosterone

300 mg twice daily or 600 mg once daily for 8-12 weeks— Some trials show modest testosterone increases, mainly in stressed or training men.

Safety & Limits

Upper Safe Limit

No official UL; 600 mg/day standardized extract is the best-studied routine dose, while 1000-1250 mg/day has short-term human safety data.

Cycling

Use for 8-12 weeks, then take 1-2 weeks off or reassess whether you still need it.

Contraindications

Pregnancy — avoid; insufficient safety data and traditional concern about uterine stimulation

Breastfeeding — insufficient safety data

Hyperthyroidism or thyroid hormone therapy — may raise T3/T4 and worsen symptoms

Autoimmune disease or immunosuppressant drugs — may alter immune activity

Sedatives, benzodiazepines, or other CNS depressants — additive drowsiness

Liver disease — rare cases of clinically apparent liver injury have been reported

Diabetes medications — may add to glucose-lowering effects

Antihypertensive medications — may modestly lower blood pressure further

Scheduled surgery — stop 1-2 weeks before due to sedative effects

Synergies

Magnesium glycinate

Can complement ashwagandha's calming effect and support sleep quality without relying on stronger sedatives.

L-theanine

L-theanine works more acutely for calm focus, while ashwagandha may help over several weeks by reducing stress reactivity.

Avoid Combining With

✕Caffeine late in the day (can offset calming and sleep benefits)
✕Alcohol (can worsen sleep quality and increase sedation)

Updated Invalid Date