Seventy pharmacies located in Sao Paulo were randomly selected and vis
ited. Seven researchers posed as ordinary clients presenting with a st
andardized complaint of symptoms according to a scenario previously de
fined. The client asked for medicines to relieve his/her pain or disco
mfort. After the seller's suggestion the client asked for 2 drugs rand
omly selected from a drug list containing 30 trademarked drugs commonl
y prescribed to arthritis patients. These drugs should be available on
ly on prescription. In only 12.8% of the pharmacies did the seller ini
tially suggest the client see a physician. The sellers 'prescribed' no
n-steroid anti-inflammatory drugs (NSAID), vitamins, analgesics (AN) a
nd corticosteroids (GO) in respectively 42.8, 20.0, 14.3 and 5.7% of t
he visits. From the drug list, the client secured 67.7% of the NSAID,
65.0% of the CO and 20.0% of the sedatives without presenting a prescr
iption. Pharmacy sellers usually comply with the clients demands. Futu
re studies should aim at the evaluation of interventions to reduce the
availability of the over-the-counter drugs for arthritis.