People in Wiltshire are being asked to tell the NHS what they think about the provision of pharmaceutical services.
The NHS said 10,000 randomly chosen people registered with GPs in the county would receive the survey in the post this week.
A spokeswoman said their anonymous answers will be included in a pharmaceutical needs assessment.
She said regular reviews were necessary "in order to deliver excellent services."
"What they tell us will remain confidential but will be really useful in helping us assess what pharmaceutical services we need in Wiltshire now and into the future," she added.