I think the best choice would be wellbutrin (also known as bupropion, budeprion, or Zyban). This is technically an antidepressant, but a ver unique one. You should avoid it if you have any history of seizures ro bulemia.
What makes it different than all other antidepressants is its effect on the dopamine system in the brain. This is why it helps decrease nicotine cravings. Basically, most addictions eventually reinforce the dopamine system of the brain.
Although wellbutrin is not officially FDA approved for speed addiction, there have been many reports of it helping such.
Keep in mind doctors very often prescribe meds for conditions
that they are not FDA approved for (it costs lots of money for FDA approval; and sometimes there is enough research to justify a trial of a med in a patient, but not enough for the official FDA approval).
The only other choice are stimulants (like adderall & ritalin) but these are really a very bad idea. These are basically "low grade, pharmaceutical speed." They can be just as addictive as street speed. Most doctors would not prescribe these for you because of this risk.
Keep in mind that even with wellbutrin, you still may have some withdrawals. There aren't any specific medications for speed withdrawal or speed addiction. Consider going to a detox and also an inpatient rehab...or at the very least go to outpatient rehab. If cost is an issue, go to AA or NA meetings. These are free and a good overall treatment. Even if you don't agree completely with the 12-step philosophy, there can be many things to gain from this program.
Treat yourself holistically too. This would include 1) psychotherapy with a live therapist, and 2) learning some formal relaxation therapy.
The last 2 treatments I mentioned are proven by sophisticated studies using brain scans (CT, MRI, EEG, pet scans) to improve brain function.
Also, by formal relaxation therapy I mean yoga, meditation
, or similar methods. Having relaxing hobbies is also important, but not quite the same as formal relaxation therapy.
And remember you can't separate emotional health from physical health, so exercise & nutrition are vital.
And read books on sobriety. These are easy to find.
I hope this helps. Let me know if you need more feedback. Good luck & take care.
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