Waklert 150 usually lasts 12 to 15 hours. People with narcolepsy, shift work sleep disorder, and obstructive sleep apnea are prescribed it to help them stay awake and focused during the day. Usually, the effects start to show up one to two hours after the medicine is taken. Given its lengthy duration, Waklert 150 is best taken in the morning to prevent insomnia or trouble falling asle... https://www.smartfinil.net/product/waklert-150/