The aim of this paper is to show the potential of SciE-Lex, a lexical database of non-specialised (bio) medical terms, intended to help Spanish scientists, especially those in the medical community, to write native-like scientific articles in English. SciE-Lex provides morphological, semantic, syntactic and collocational information. In line with new trends in corpus and phraseological studies, which emphasise the importance of controlling multi-word expressions as a device to struccture discourse and improve language fluency, SciE-Lex is now being supplemented with 3- to 5 -word clusters and provides explicit information about their composition, function and textual distribution. Formulaic constructions are classified according to their function in the discourse. The new additions in SciE-Lex also illustrate the advantages that the electronic format can offer, such as the posibility of connecting formulaic constructions to headwords by means of hyperlinks and the indusion of information on the variability of prototypical expressions, accompanied by notes clarifying their usage patterns.