For example, copper is added to the precious metal silver to make a more durable alloy for use in coins, housewares and jewelry. Coin silver, which was used for making silver coins in the past, contains 90% silver and 10% copper, by mass.
Metformin ER (Fortamet) Metformin ER (Fortamet) is an expensive drug used to treat type II diabetes. It helps control blood sugar in combination with diet and exercise. This drug is slightly less popular than comparable drugs. It is available in brand and generic versions.
The medication is also available in a long-acting form (Glucophage XR) that comes in two strengths (500 mg and 750 mg). Long-acting metformin 1000-mg tablets are also available and are sold under the brand names of Fortamet Â® and Glumetza Â® . A liquid version of metformin, called Riomet Â® , is also available.