Side effects such as drowsiness, mental clouding, and nausea can be a result of taking: tranquilizers pain relievers narcotics stimulants

When we're taking narcotics, we can expect symptoms such sa drowsiness, mental clouding and nausea as well. 

These symptoms exactly describe the symptoms we would be able to expect when taking narcotics and not really when we would be taking any of the other mentioned drugs. 

Fiber doesnt contain any calories i believe