From an Company Announcement:
MEDLINE Complete is the largest full-text companion to the MEDLINE index ever assembled and provides full text for more than 1,850 journals. This wide-ranging file contains full text for many of the most used journals in the MEDLINE index — available in MEDLINE Complete with no embargo.
From the MEDLINE Complete Info Page:
Of the 1,800+ full-text journals available in MEDLINE Complete, over 1,840 have cover-to-cover indexing in MEDLINE, and of those, nearly 970 titles are not found with full text in any version of Academic Search™, Health Source® or Biomedical Reference Collection.