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(glyburide and metformin HCI) Tablets 1.25 mg/250 mg, 2.5 mg/500 mg and 5 mg/500 mg
GLUCOVANCE® (Glyburide and Metformin HCI) Tablets contain 2 oral antihyperglycemic drugs used in the management of type 2 diabetes, glyburide and metformin hydrochloride.
Glyburide is an oral antihyperglycemic drug of the sulfonylurea class. The chemical name for glyburide is 1 -[[p-[2-(5-chloro-o-anisamido)ethyl]phenyl]sulfonyl]-3-cyclo-hexylurea. Glyburide is a white to off-white crystalline compound with a molecular formula of C23H28C1N3O5S and a molecular weight of 494.01. The glyburide used in GLUCOVANCE (glyburide and metformin) has a particle size distribution of 25% undersize value not more than 6 µm, 50% undersize value not more than 7 to 10 µm, and 75% undersize value not more than 21 µm. The structural formula is represented below.
Metformin hydrochloride is an oral antihyperglycemic drug used in the management of type 2 diabetes. Metformin hydrochloride (N,N-dimethylimidodicarbonimidic diamide monohydrochloride) is not chemically or pharmacologically related to sulfonylureas, thiazolidinediones, or a-glucosidase inhibitors. It is a white to off-white crystalline compound with a molecular formula of C4H12ClN5 (monohydrochloride) and a molecular weight of 165.63. Metformin hydrochloride is freely soluble in water and is practically insoluble in acetone, ether, and chloroform. The pKa of metformin is 12.4. The pH of a 1% aqueous solution of metformin hydrochloride is 6.68. The structural formula is as shown:
GLUCOVANCE (glyburide and metformin) is available for oral administration in tablets containing 1.25 mg glyburide with 250 mg metformin hydrochloride, 2.5 mg glyburide with 500 mg metformin hydrochloride, and 5 mg glyburide with 500 mg metformin hydrochloride. In addition, each tablet contains the following inactive ingredients: microcrystalline cellulose, povidone, croscarmellose sodium, and magnesium stearate. The tablets are film coated, which provides color differentiation.
What are the possible side effects of glyburide and metformin (Glucovance)?
This medication may cause lactic acidosis (a build-up of lactic acid in the body, which can be fatal). Lactic acidosis can start slowly and get worse over time. Get emergency medical help if you have even mild symptoms of lactic acidosis, such as: muscle pain or weakness, numb or cold feeling in your arms and legs, trouble breathing, stomach pain, nausea with vomiting, slow or uneven heart rate, dizziness, or feeling very weak or tired.
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling...
What are the precautions when taking glyburide and metformin (Glucovance)?
Before taking this medication, tell your doctor or pharmacist if you are allergic to glyburide or metformin; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: kidney disease, liver disease, conditions that may cause a low level of oxygen in the blood or poor circulation (such as severe congestive heart failure, recent heart attack, recent stroke), serious infection, severe loss of body fluids (dehydration), alcohol use, severe breathing problems (such as obstructive lung disease, severe asthma), blood problems (such as anemia, vitamin B12 deficiency),...
Last reviewed on RxList: 1/11/2011
This monograph has been modified to include the generic and brand name in many instances.
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