Find all the drugs according to an introduced term

Database: 
Statement: 

Find all the drugs according to an introduced term $drug1$ (e.g. acyl)
Limit of results per page $number$

Query: 
PREFIX dailymed: <http://wifo5-04.informatik.uni-mannheim.de/dailymed/resource/dailymed/> SELECT DISTINCT ?drugname WHERE { ?s rdf:type dailymed:drugs . ?s rdfs:label ?drugname . Filter regex (?drugname, "??drug1", "i") } limit ??number