Placebo Effect of Paracetamol in Healthy Volunteers

Placebo Effect of Paracetamol in Healthy Volunteers

Paracetamol is one of the most commonly used drugs in the world, indicated for the symptomatic treatment of fever and pain of mild to moderate. More precisely, it is a drug used to relieve pain and reduce fever. The objective of this study is to analyze whether a placebo effect occurs when you take paracetamol for pain, ie if the analgesic effect of paracetamol is partly due to the simple fact of taking a drug.

Moreover, during the study you propose to do a saliva sample, optional, for biological research, pharmacogenetics, to assess how paracetamol is processed and eliminated in your body..

Clinical trial conducted in healthy volunteers, prospective, single center, randomized, open / hidden.

Inclusion Criteria:

- Healthy volunteers,

• Aged over 18 years and more than 50 years
• Males,
• Values of vital signs before administration of the test products:
• Systolic between 100-140 mm Hg
• diastolic between 50-90 mm Hg
• cardiac pulse between 45-90 beats per minute
• Free from any treatment in the 7 days preceding inclusion including no use of analgesics or anti-inflammatory)

Exclusion Criteria:

• Contraindications to the administration of paracetamol : Hypersensitivity to paracetamol, History of hepatitis B or C, Severe renal impairment
• Hepatic insufficiency
• Medical history and / or surgical judged by the investigator or his representative as being incompatible with the test, especially subjects with neuropathic pain,
• Pathology evolutionary time of the review of inclusion
• Excessive consumption of alcohol, tobacco (over 10 cigarettes / day), coffee, tea or drinks containing caffeine (equivalent to more than 4 cups per day) or drug abuse,