Hello! Is there any injection for back pain. I...

Dear Customer
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injectable pain killers :
there is many medication and pain killers which can be used as an oral pills or IV injection or local injection , such as :
1. nabumetone
2. diclofenac ( voltarine ) 
3. celecoxib 
common side effects of injectable painkillers :
1. drowsiness
2. nausea
3. vomiting 
4. itching 
5. swelling of injection area
6. slowing breathing rate 
7. constipation
8. addiction 
our advice :
please consult your doctor before taking any of those medication 
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Kind Regards