If a boy is 17.5 year old and he is addict of...

how to treat addiction ?
The gradual withdrawal from the high dose to the lower dose
cognitive and behavioral therapy
Psychological Support Group
some drugs to decrease the effect of withdrawal of these drugs like naltrexone but with the
prescription of a psychiatrist
for alcohol
Change the behaviors that make you want to drink, deal with stress and other triggers that push you to drink, and build a strong support system from family and friends. In some cases, others may want to treat addiction through medications that a psychiatrist can prescribe for you to get rid of the drinking problem, such as Disulfiram, which is a substance It makes you feel sick if you drink and thus reduces your desire to drink. Acamprosate can help reduce cravings for alcohol and ultimately Naltrexone reduces the happiness you get from drinking.
What are the side effects of using addictive drugs?
Symptoms similar to influenza (fever, headache, nausea, vomiting)
Sleep problems (insomnia, persistent sleep, nightmares at night)
Lack of balance
Dizziness
 
What is my advice to you ?
i advice you to visit a psychiatric to take the history and perform examination and other tests then starting to follow a step by step plan to gradually withdraw the addictive drug