Ruslana Shadrina
PhD in Biology, geneticist and molecular biologist.
Specializes in autophagy and molecular mechanisms of cancer. Has research experience in leading labs in Ukraine and Barcelona.

Supports clear thinking, efficient information processing, and reliable recall, helping you stay focused even under pressure.
Supports the body’s response to stress and helps maintain emotional balance, promoting a calmer mindset and faster recovery after mental strain.
We collaborate with scientists and medical professionals who create solutions that truly work.
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L-theanine starts working within 30-60 minutes after taking it, bringing a sense of calm focus. The full effect — including improved focus, memory, and stress resilience — develops gradually over 2-4 weeks of regular use.
Yes. The formula contains no caffeine and does not increase blood pressure. In fact, the L-theanine in Crystal Mind can help smooth out the effects of caffeine by reducing jitters, anxiety, and heart palpitations while maintaining mental clarity and focus. That’s why combining it with coffee is perfectly acceptable, especially in the morning — a kind of “smart combo.”
No. The formula contains natural ingredients that work gently, without stimulants and without creating dependency. After stopping use, cognitive tone gradually returns to your usual baseline without a sudden drop.
We recommend taking it in the morning or during the first half of the day after a meal.It’s best not to take it in the evening, as the formula supports focus and may make it harder to fall asleep.
Yes, it is suitable. The formula contains no stimulants — no caffeine, guarana, or ginseng.L-theanine gently reduces tension and helps prevent sharp blood pressure spikes during stress, while ashwagandha supports blood pressure stability by lowering cortisol levels. As a result, Crystal Mind is safe even for those who are sensitive to caffeine or prone to high blood pressure.
Yes, but with breaks. The optimal approach is a 2–3 month course, followed by a 1–2 month break. The course can be repeated several times a year.
Use is not recommended in cases of:
-individual sensitivity or allergy to any ingredient
- age under 18
- pregnancy or breastfeeding
- thyroid dysfunction
- autoimmune diseases or after organ transplantation (due to the immunostimulatory properties of ashwagandha, Lion’s Mane, and Bacopa)
- diabetes or use of medications affecting blood glucose levels, as some ingredients may lower blood sugar
- liver disease or use of medications metabolized by the enzymes CYP1A2, CYP2C19, or CYP2C9
- if used together with antidepressants, sedatives, antihypertensive drugs, immunomodulators, or anticoagulants, prior consultation with a healthcare professional is required.
We create our content exclusively based on verified scientific sources. The full list of references is available here:
https://pubmed.ncbi.nlm.nih.gov/38931168/
https://pubmed.ncbi.nlm.nih.gov/23320031/
https://pubmed.ncbi.nlm.nih.gov/31623400/
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