If you're dealing with daily stress, this formula combines four adaptogens in a single capsule. The lead ingredient is **Sensoril Ashwagandha** at 250mg (standardized to 8% withanolides) — a patented extract with clinical trials showing cortisol reduction and stress relief at this exact dose. That's a meaningful amount backed by real research.

The supporting cast includes **Lavender** extract (150mg), **Eleuthero** (150mg), and **Rhodiola** (75mg). Lavender at 150mg is close to the 80–160mg Silexan dose studied for anxiety. Rhodiola at 75mg falls short of the 200–400mg range used in most clinical trials for stress and fatigue, so you're getting a partial dose there.

The suggested use is 1–2 capsules twice daily (up to 4 capsules), which would double or quadruple these doses. At one capsule per serving, the rhodiola and eleuthero are underdosed — you'd need to follow the higher end of the suggested use to get all four ingredients into their studied ranges.

BioStacks
Natural Factors Stress-Relax

Adrenal Serenity

Capsule · 30 servings · $0.44/serving

50 / 100Average

Score Breakdown

Formulation
57
Safety
87
Final score
50/100

Ingredients (4)

Sensoril Ashwagandha extract250 mg

Optimal dose · Premium form

Lavender extract150 mg

Within effective range

Rhodiola extract75 mg

52% of effective dose

Eleuthero extract1.2 mg

0% of effective dose

Label Nutrition Facts

Other Ingredients

Fillers, coatings, and additives

2Safe1Caution

Rice FlourFiller

Caution

Magnesium StearateLubricant

Safe

Capsule ShellCapsule

Safe

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.