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For stress and cortisol
Ashwagandha · Plant Withania somnifera (ashwagandha)
A plant that helps the body react more gently to stress, without making you feel "foggy".
Helps with
In plain language
Ashwagandha is a herbal root extract, helps the body respond more gently to stress, without blocking it.
The active compounds are called withanolides, they act on the HPA axis (the system that manages the stress response).
Unlike sedatives, it does not “put the mind to sleep”, it regulates the stress reaction.
Natural source:
Root of the ashwagandha plant, a shrub native to India, North Africa and the Middle East. Used in Ayurvedic medicine for over 3,000 years. The extract is concentrated, 1 kg of root yields roughly 30 g of extract with ≥5% withanolides.
Why ashwagandha is in Corti-Glow
When cortisol (the stress hormone) is high in the evening, you cannot fall asleep, you toss and turn, you think about work.
Ashwagandha reduces baseline cortisol by 27.9% in 60 days (Salve et al., Cureus, 2019, 60 participants, randomized double-blind).
Supports thyroid function, often disrupted under chronic stress.
How it works on the body
Acts on the HPA axis (the stress system)
Downregulates the hypothalamus → pituitary → adrenal glands signal, the axis that tells the body “alarm”. Fewer panic signals, lower cortisol.
Supports GABA receptors
GABA (gamma-aminobutyric acid) is the calm neurotransmitter in the brain. Ashwagandha strengthens its action, you feel more collected, without drowsiness.
Reduces oxidative stress
Chronic stress produces free radicals that damage cells. Withanolides are strong antioxidants.
Supports thyroid function
In hypothyroidism (a slowed thyroid gland, often linked to stress) ashwagandha normalizes TSH (thyroid-stimulating hormone) and T4 values.
What to expect
First 3 days · Ashwagandha
A calmer evening mood. The inner “buzz” starts to quiet down.
First 3 days
A calmer evening mood. The inner “buzz” starts to quiet down.
1–2 weeks
You fall asleep more easily. Fewer 3 AM wake-ups.
4–6 weeks
Your stress reactions are gentler. Small things don't “shake” you as much.
8 weeks
Baseline cortisol has dropped. Energy is more stable all day long.
How it works with the other ingredients
Not just 7 supplements in one box. Every combination has a specific mechanism, here's why the formula is what it is.
Combination
+ L-Theanine · 200 mg
For calm focus without drowsiness
Mechanism
The two work on different timescales. L-Theanine gives immediate calm (30–60 min after intake), racing thoughts stop tonight. Ashwagandha lowers the baseline cortisol level (4–8 weeks), stress reactions become gentler overall.
End benefit
Immediate calm tonight + long-term reduction in stress.
3 combinations · click to explore
This is why they aren't sold separately, one sachet, the full chain.
The research
Chandrasekhar et al. (2012)
Indian Journal of Psychological Medicine
Participants
64 participants (mixed group)
Dosage
600 mg daily (300 mg twice), 60 days
Result: 27.9% reduction in serum cortisol. Significant improvement in perceived stress (on the standardized PSS scale) and quality of life.
Langade et al. (2019)
Cureus
Participants
58 participants with insomnia
Dosage
300 mg twice daily, 8 weeks
Result: Significant improvement in sleep quality (p<0.0001). Shorter sleep onset time, longer deep sleep.
Sharma et al. (2018)
Journal of Alternative and Complementary Medicine
Participants
50 participants with hypothyroidism
Dosage
600 mg daily, 8 weeks
Result: Normalization of TSH (thyroid-stimulating hormone) and T4 (thyroxine). Improvement in energy and symptoms.
Why this exact dose in Corti-Glow
See how our dose compares with what was used in clinical trials.
Corti-Glow, our dose
our dose, 300 mg
300 mg
Chandrasekhar 2012
600 mg daily (300 mg twice), 60 days
600 mg
Langade 2019
300 mg twice daily, 8 weeks
300 mg
Sharma 2018
600 mg daily, 8 weeks
600 mg
Frequently asked questions
Works well with
Ashwagandha is one of the 7 ingredients.
Every evening, one sachet with the full formula, at clinical dose.
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