Assessment of Taste and Grittiness of Riomet ® ER Strawberry, Riomet ® ER Grape, Riomet ® Cherry, and Metformin Immediate-Release Tablets in Healthy Subjects

Objective This study was conducted to evaluate the taste and grittiness of two formulations of Riomet® ER (metformin hydrochloride for extended release [ER] oral suspension 100 mg/mL) differing only in their flavoring agents (strawberry and grape) in comparison with two commercially available immediate-release (IR) formulations of metformin, Riomet® Cherry (metformin hydrochloride oral solution 500 mg/5 mL) and metformin IR tablets (metformin hydrochloride IR tablets 500 mg), in healthy human subjects aged 10–70 years.