Toyohiro Sawada

Extended release of a large amount of highly water-soluble diltiazem hydrochloride by utilizing counter polymer in polyethylene oxides (PEO)/polyethylene glycol (PEG) matrix tablets.

K. Sako, Hiroyuki Kojima, Keiichi Yoshihara, 2008, European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V.

Relationship Between Gelation Rate of Controlled-release Acetaminophen Tablets Containing Polyethylene Oxide and Colonic Drug Release in Dogs

Hiroshi Nakashima, Muneo Fukui, M. Fukui, 1996, Pharmaceutical Research.

Scintigraphic evaluation of a novel colon-targeted delivery system (CODES) in healthy volunteers.

Yoshinori Masuda, Muneo Fukui, Katsutoshi Nakamura, 2004, Journal of pharmaceutical sciences.

Differences in the Enhancing Effects of Sodium Caprate on Colonic and Jejimal Drug Absorption

Takahiro Ogawa, Hiroyuki Ouchi, Mikio Tomita, 1992, Pharmaceutical Research.