Mentat Syrup® - a brain tonic made from potent Ayurvedic herbs like Ashwagandha, known to relive anxiety and induce calmness. It also improves mental concentration and alertness.
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Testimonials
Regarding the effect: I do notice an increase in bloodflow and a better stamina using the pills (I use 50mg). A side-effect I have noticed is that my nose clogs up so I seem like I have a cold for an hour or so after taking one pill. No other side-effects than that.