Rosemary for focus

Rosemary for focus
What are your thoughts on this?

"Rosemary is considered a cognitive stimulant and can help improve memory performance and quality, It is also known to boost alertness, intelligence, and focus. The aroma of rosemary has been linked to improving mood, clearing the mind, and relieving stress."- Flushing Hospital Medical Center

Tincture:
Dried leaves (1:5 65% alcohol, 10% glycerin)
10 drops- 3 droppers (ml) up to 3x day

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