Best Supplements for Stress

Your nervous system needs support. Here's what the research says.

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Quick Answer

What are the best supplements for stress?

The top 3 evidence-based supplements for stress are Ashwagandha (9/10), Magnesium (10/10), and L-Theanine (9/10). Lowers cortisol 14-28% in clinical trials

Chronic stress does real damage. Elevated cortisol messes with sleep, weight, immunity, even your brain. The good news? A few supplements have solid evidence for bringing stress hormones back to normal. Not magic pills. But real support.

The Heavy Hitters

Effective Dose300-600mg daily (KSM-66 or Sensoril extracts)
Time to Effect2-4 weeks for full effect

This adaptogen has over 20 human trials behind it. The numbers are consistent: cortisol drops 14-28% in stressed adults. It works by regulating your HPA axis, the system that controls stress response. Takes a couple weeks to kick in, but the effect is real.

Best for:Chronic stressHigh cortisolStress eatingFeeling wired but tired
Effective Dose300-400mg daily (glycinate or threonate)
Time to Effect1-2 weeks

Here's the thing about magnesium: stress depletes it, and being low makes you more stressed. Vicious cycle. About 50% of Americans don't get enough. Glycinate form is gentle on the stomach and the glycine adds extra calming effect.

Best for:Muscle tension from stressStress-related sleep issuesRacing thoughts
Effective Dose100-200mg as needed
Time to Effect30-60 minutes

Found in green tea, but you'd need 10 cups for a therapeutic dose. L-theanine promotes alpha waves in your brain. That's the relaxed-but-alert state. No drowsiness. Works well with caffeine if you want calm energy.

Best for:Acute stress momentsPresentations or meetingsCaffeine jitters

Worth Considering

Effective Dose200-600mg daily (3% rosavins)
Time to Effect1-2 weeks

Another adaptogen, but different from ashwagandha. Rhodiola is more energizing. Studies show it helps with burnout and mental fatigue. Good choice if stress is making you exhausted rather than wired.

Best for:BurnoutMental exhaustionStress with fatigue
Effective Dose100-300mg daily
Time to Effect2-4 weeks

PS blunts cortisol response to both physical and mental stress. Athletes use it to manage exercise-induced cortisol. Less studied than ashwagandha, but interesting data.

Best for:Exercise-induced stressCortisol management

Daily Stress Support Stack

Cover your bases without going overboard.

IngredientDoseWhen
Ashwagandha (KSM-66)300mgMorning with food
Magnesium Glycinate300-400mgEvening
L-Theanine100-200mgAs needed for acute stress

Beyond Supplements

  • Sleep is non-negotiable. Poor sleep spikes cortisol.
  • Exercise helps, but overtraining makes stress worse
  • Caffeine after 2pm keeps cortisol elevated
  • The stress response evolved for short-term threats. Address the source when you can.

Note: Chronic high stress affects health in real ways. If you're overwhelmed, these supplements support but don't replace addressing root causes or professional help.

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