Best Supplements for Anxiety

What research actually shows, not what marketing claims

Anxiety supplements fall into three categories: those with solid clinical evidence, those with promising but limited research, and those that are mostly marketing. This breakdown focuses on what actually works.

Strong Evidence

Effective Dose200-400mg daily (glycinate form)
Time to Effect1-2 weeks

Magnesium calms the nervous system by regulating GABA, the brain's main relaxation neurotransmitter. Studies show significant anxiety reduction in people who were deficient. Since most people don't get enough from food, this is a logical first step.

Best for:Generalized anxietyStress-related tensionAnxiety with sleep issues
Effective Dose300-600mg daily (KSM-66 or Sensoril)
Time to Effect2-4 weeks

Ashwagandha is an adaptogen that helps your body handle stress more efficiently. Multiple clinical trials show it lowers cortisol by 14-28% and reduces anxiety scores. Takes a few weeks to build up.

Best for:Chronic stressAnxiety with fatigueHPA axis dysfunction
Effective Dose100-200mg
Time to Effect30-60 minutes

L-theanine promotes alpha brain waves (relaxed but alert) without sedation. Found in tea but you'd need many cups for a therapeutic dose. Works well with caffeine to smooth out jitters.

Best for:Situational anxietyCaffeine jittersNeed calm focus

Moderate Evidence

Effective Dose80-160mg daily (Silexan extract)
Time to Effect2-6 weeks

The patented Silexan extract has several clinical trials showing anxiety reduction comparable to low-dose benzodiazepines, without dependency risk. Generic lavender may not have the same effect.

Best for:Generalized anxietySleep-related anxiety
Effective Dose1-2g EPA daily
Time to Effect4-8 weeks

Higher EPA omega-3s show modest anxiety benefits in meta-analyses. Not a primary anxiety treatment, but if you're already supplementing for other reasons, you may get some bonus anxiety relief.

Best for:Anxiety with inflammationGeneral mood support

Anxiety Support Stack

A reasonable combination for anxiety without overcomplicating things.

IngredientDoseWhen
Magnesium Glycinate300mgBefore bed
Ashwagandha (KSM-66)300mgMorning
L-Theanine200mgAs needed

Beyond Supplements

  • Sleep optimization - anxiety and poor sleep feed each other
  • Reducing caffeine or pairing with L-theanine
  • Regular movement and exercise
  • Limiting alcohol - temporary relief but increases anxiety long-term

Note: If your anxiety is severe or interfering with daily life, these supplements are supportive tools, not replacements for professional help.

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