Hello I understand you hurt yourself in gym and now you have AC joint pain. It is advisable to take rest for pain to subside. Avoid lifting heavy weights with the affected side. If there is a lot of pain and swelling then it is better to get x-ray done - Xray of affected shoulder Take analgesics like Tab. Acenac SP / Alovac SP which ever is available twice a day after food Apply ice fomentation if swelling is present injury is less than a week old. Calcimax can be taken for supplement but it will not help much in reducing the pain.

Calcimax won't help with your symptoms. You need rest and a pain killer.

Get one shoulder x ray , should see the position of AC joint Start analgesic like Tab Risinac SP Twice daily Use Arm pouch for 3 weeks