The study is a cluster randomized cross-over trial. It involves 21 French universitarian and non-universitarian hospitals with 42 care units: 22 medical units and 20 surgical units. Each unit (a unit corresponds to a cluster) is involved during two consecutive 14-day periods which are randomly assigned as "experimental" or "control" where control corresponds to usual care. During the experimental period, for each eligible patient discharged during the period, a reconciliation procedure will be performed by the HP, with communication to the patient. The HP will further inform the patient's community pharmacist about patient's drug therapy [modification in home medication, acute drugs prescribed, shelved treatments and/or labs results to survey patient]. Eligible patients will be over 18, attending to the same community pharmacist for at least 3 months. We will exclude patients with a length stay over 21 days (too many therapeutic modifications), those who do not return to home, and also palliative patient. The primary outcome is a composite outcome associating any kind of drug misuse during the 7 days following discharge. It will be assessed by phone at day 7 (+/-2) by a pharmacist in charge of the study (PCS) will phone both patients and community pharmacists . The secondary outcome will be the unplanned hospitalizations observed in each group assessed by phone at day 35 (+/-5). We plan to recruit 1,176 patients, i.e. 14 per period per unit.