One of my friend is suffering from pain in his left side of shoulder, neck and arm he is 27+ years old not only that he sometimes feels pain in left side of chest might be in his heart and let me tell you one fact about him he is a drug addicted he is taking spas mo proxy capsules now he wants quit it but when he is not taking that capsules he feels restless and feeling so tired. so please suggest me what will he have do he is chain smoker too is there any medicine for him because he don't want consult doctor you may understand the reaso.n so please help him I don't want loose my friend like this.