Objective:

To measure the indirect adherence of patients with multiple sclerosis (MS) to their pharmacological treatments, comparing medication for the disease itself with the other concomitant treatments that have been chronically prescribed.

Methods:

A cross-sectional, descriptive (November 2018) study at the Pharmacy Department of a spanish secondary hospital in Valencian Community. Study population is all those patients diagnosed with MS in its different variants, who are being treated with hospital dispensing drugs for a minimum of six months at the time of the study. The variable evaluated was the percentage of adherence of patients to their medication, which has been measured as the ratio between the doses of prescribed drugs and those dispensed; considering adherent to all patients with a percentage equal to or higher than 80%.

Results:

The study included 86 patients from the Pharmacy External Outpatient Unit. The average exposure time to drugs was 198.7±27.9 days, where the adherence to treatment of multiple sclerosis was 98.1±6.6% and that of the rest of the chronic medication concomitant 92.8±19.5%.

Conclusions:

Adherence to pharmacological treatments in this population has been very high. Patients have shown greater adherence to drugs dispensed at Pharmacy External Outpatient Unit, possibly because they consider the rest of medication less important and/or to treat milder comorbidities or pathologies.

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