Doctors use stimulants for people with central fatigue. Ritalin is another that is sometimes given. Another is ProVigil.

Over time and depending on dose, there is a rebound depression with amphetamines. This is because of dopamine depletion.

You can avoid some tolerance issues and the rebound depression by not taking the Dexedrine every day. Take it only when you expect to be active and need that extra push.

There are supplement ways to increase "energy" too. The most potent is SAMe. This supplement enhances the production of neurotransmitters in the brain.
Some believe that taking B12 helps. And if you think your fatigue is depression you should have your Vit D measured. Low D has been shown to present in depressed people. Some people take the amino acid tyrosine to give a boost to dopamine synthesis.

If you decide to do SAMe, start at 200mg a day (one tablet) and take it in the morning on an empty stomach. Sometimes that is all you will need. Most people feel an energetic boost, at this starting dose, but it may wear off in time.

You can PM me anytime Twink, if you decide to do some supplements. I took SAMe for 10 yrs, so have alot of experience with it.

The Vit D is also very important. I used to get seasonally depressed at this time of year, but since taking 4000IU of D daily during non-summer months, I haven't had it.