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500 mg: White to off-white, round, biconvex tablet, debossed on one side with '500'.
One extended release tablet contains 500 mg metformin hydrochloride corresponding to 390 mg metformin base.
750 mg: White to off-white capsule-shaped, biconvex tablet, debossed on one side with '750' and on the other side with 'Merck'.
One extended release tablet contains 750 mg metformin hydrochloride corresponding to 585 mg metformin base.
1,000 mg: White to off-white, capsule shaped, biconvex tablet, debossed on one side with '1000' and on the other side with 'Merck'.
Each extended release tablet of Glucophage XR 1000 mg contains 1000 mg metformin hydrochloride corresponding to 780 mg metformin base.
Excipients/Inactive Ingredients: 500 mg: Magnesium stearate, sodium carboxymethylcellulose, hypromellose.
750 mg and 1,000 mg: Magnesium stearate, Carmellose sodium, Hypromellose.
