Paracetamol Vs Caffeine Vs Codeine in the Management of Post Traumatic Pain in Emergencies

Inclusion Criteria: * Age :18 years or older * Patients presented to the emergency department with acute post-traumatic pain and residual pain at rest and/or on movement with a numerical pain rating scale (NRS) \> 3/10 on discharge. * They all signed a written consent form. Exclusion criteria: * Self-mutilation * Severe acute trauma that may require hospitalization * Open or complicated fracture requiring surgical management * Regular use of analgesics * Any known allergy to paracetamol, caffeine or codeine * Asthma and acute/chronic respiratory insufficiency * Severe renal insufficiency (creatinine Cl\<30 ml/min) * Pregnant/lactating women * Hepatic cirrhosis. * Refusal, incapacity or difficulties to consent or to communicate