May 24, 2017
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(glyburide) 1.25, 2.5 and 5 mg tablets USP


Diaβeta® (glyburide) is an oral blood-glucose-lowering drug of the sulfonylurea class. It is a white, crystalline compound, formulated as tablets of 1.25 mg, 2.5 mg, and 5 mg strengths for oral administration. Diaβeta tablets USP contain the active ingredient glyburide and the following inactive ingredients: dibasic calcium phosphate USP, magnesium stearate NF, microcrystalline cellulose NF, sodium alginate NF, talc USP. Diaβeta 1.25 mg tablets USP also contain D&C Yellow #10 Aluminum Lake and FD&C Red #40 Aluminum Lake. Diaβeta 2.5 mg tablets USP also contain FD&C Red #40 Aluminum Lake. Diaβeta 5 mg tablets USP also contain D&C Yellow #10 Aluminum Lake, and FD&C Blue #1. Chemically, Diaβeta is identified as 1-[[p-[2-(5-Chloro-o-anisamido)ethyl]phenyl]sulfonyl]-3-cyclohexylurea.

The CAS Registry Number is 10238-21-8.

The structural formula is:

Diaßeta® (glyburide) Structural Formula Illustration

The molecular weight is 493.99. The aqueous solubility of Diaβeta increases with pH as a result of salt formation.

What are the possible side effects of glyburide (DiaBeta, Glynase PresTab, Micronase)?

Stop using glyburide and get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Stop taking this medication and call your doctor at once if you have any of these serious side effects:

  • nausea, stomach pain, low fever, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes);
  • pale skin, confusion or weakness;
  • easy bruising or bleeding, purple or red pinpoint spots under your skin;...

Read All Potential Side Effects and See Pictures of DiaBeta »

Last reviewed on RxList: 1/30/2017
This monograph has been modified to include the generic and brand name in many instances.

Report Problems to the Food and Drug Administration


You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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