Each of the recruited patient was given 3 different placebo drugs with 3 different mad up names to be taken for one month with different regiments.

The drug name resembled a real drug but with enough difference to prevent the patient from trying to buy it as a safety precaution. The name was printed on the box in English and Arabic letters. The coloured shape was printed to 2x2 cm dimension.

After one month the participants were intervened by a doctor blinded to the study. The doctor asked about the drug history of the patient. If the participant could remember the drug name and its correct regiment the doctor documented that. if the patent failed to remember the correct name and its regiment then the doctor asked the patient to try and remember anything about the drug.

Then the patient would be asked about the symbol on the drug and was it helpful for him in any way.

A scoring system was used to evaluate pateints memory of the drugs used 0- 3 0 is the minimal score and will be given if no recall of any drug name and 3 is the maximum score and will be given if the patient could remember the name of the tree drugs correctly.

The same scoring system was used for the symbols

Inclusion Criteria:

• ASA I and II patients

Exclusion Criteria:

• severe or life-threatening condition
• severe visual impairment
• mental or cognitive dysfunction