Hello,
Welcome to Healthcare Magic.
I have read your question fully and understand your concerns.
Hydro codeine is a strong opioid. It was given to you for pain relief for your dental problem. It does cause side effects in a person who never took hydro codeine before or if hydro codeine was taken in high dose than before. The side effects include headache,
dizziness, nausea,
vomiting, muscle pains,
back pain etc. Almost all the symptoms that you mentioned in your query are side effects of hydro codeine.
You could stop the hydro codeine and take another alternative pain relief like
Ibuprofen 200-400 mg three times a day or
Naproxen 250 mg- 500 mg twice a day (provided you are not allergic to them or had side effects with them before). Take them with food, as if taken on an empty stomach they can cause
gastritis.
You could also take additional
paracetamol along with naproxen/ibuprofen. You could take Paracetamol 500 mg -1000 mg 3-4 times/day (provided you are not allergic and do not have any liver problems).
Once you stop the hydro codeine your symptoms should settle within 1-2 days. If they are still persistent kindly see your doctor
I hope this answer has helped you.
Thank you
Regards
Dr Sunita Sayammagaru