working for 16 hours without falling asleep is possible if you buy provigil generic online. this sleep apnea drug keep your mind sharp and highly excited to prevent feeling sedative and fatigue and you perform your best in your tasks.
Provigil works on the root level of the causes that cause sleep related disorders. Although there exists some side-effects but timely precaution can help tackling with them too. You can buy provigil at any of the medical shops. Still if you do not get the medicine there and are worried about where can I buy provigil in USA then check with online sites.
Provigil is a sleep apnea drug that has been on widespread use for revamping mind and boosting comprehensive cognitive abilities of the mind so that you remain active and alert throughout your duty hours