R-Tech Ueno, Ltd. engages in the research, development, manufacture, sale, export, and import of pharmaceutical products worldwide. It offers Rescula eye drops to treat glaucoma and ocular hypertension. The company has an agreement with Sucampo Pharma Ltd. to manufacture and supply Amitiza for the treatment of chronic idiopathic constipation in adults of both genders and irritable bowel syndrome with constipation in adult women in Japan, Asia, and Oceania territory. R-Tech Ueno was founded in 1989 and is headquartered in Tokyo, Japan.