Note: This document contains side effect information about glyburide. Some of the dosage forms listed on this page may not apply to the brand name Glynase PresTab.

Applies to glyburide: oral tablet

Along with its needed effects, glyburide (the active ingredient contained in Glynase PresTab) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking glyburide:

Less common

• Difficulty with swallowing
• dizziness
• fast heartbeat
• hives
• itching
• puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
• shortness of breath
• skin rash
• tightness in the chest
• unusual tiredness or weakness
• wheezing

Rare

• Abdominal or stomach pain
• chills
• clay-colored stools
• dark urine
• diarrhea
• fever
• headache
• light-colored stools
• loss of appetite
• nausea and vomiting
• rash
• unpleasant breath odor
• upper right abdominal pain
• vomiting of blood
• yellow eyes and skin

Incidence not known

• Agitation
• back, leg, or stomach pains
• bleeding gums
• blood in the urine or stools
• bloody, black, or tarry stools
• blurred vision
• change in near or distance vision
• chest pain
• coma
• confusion
• convulsions
• cough or hoarseness
• decreased urine output
• depression
• difficulty in focusing eyes
• difficulty with breathing
• fast or irregular heartbeat
• fluid-filled skin blisters
• general body swelling
• high fever
• hostility
• increased thirst
• irritability
• itching of the skin
• large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
• lethargy
• lower back or side pain
• muscle pain or cramps
• muscle twitching
• nosebleeds
• painful or difficult urination
• pale skin
• pinpoint red spots on the skin
• rapid weight gain
• seizures
• sensitivity to the sun
• skin thinness
• sore throat
• sores, ulcers, or white spots on the lips or in the mouth
• stupor
• swelling of the face, ankles, or hands
• swollen or painful glands
• unusual bleeding or bruising

Get emergency help immediately if any of the following symptoms of overdose occur while taking glyburide:

Symptoms of overdose

• Anxiety
• cold sweats
• cool, pale skin
• increased hunger
• nervousness
• nightmares
• shakiness
• slurred speech

Some side effects of glyburide may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

Less common

• Indigestion
• passing of gas

Incidence not known

• Difficulty with moving
• itching
• joint pain
• redness or other discoloration of the skin
• severe sunburn
• swollen joints

Applies to glyburide: compounding powder, oral tablet

Like all sulfonylureas, this drug may commonly cause hypoglycemia and in some case it may be severe. Proper patient selection, dose, and patient instructions are important to avoid hypoglycemic episodes.

Glyburide (the active ingredient contained in Glynase PresTab)

Very rare (less than 0.01%): Disulfiram-like reaction

Frequency not reported: Hypoglycemia, hyponatremia, weight gain, lactic acidosis, syndrome of inappropriate antidiuretic hormone (SIADH) secretion

Sulfonylureas:

Frequency not reported: Hepatic porphyria

Neonatal Diabetes:

Very common (10% or more): Hypoglycemia

Adverse gastrointestinal effects occur in about 1% to 2% of patients and appear to be dose related; they may subside following a dose reduction. Pancreatitis has been reported rarely.

Common (1% to 10%): Nausea, vomiting, epigastric fullness or sensation of pressure, abdominal pain, anorexia, dyspepsia, diarrhea, heartburn

Rare (less than 0.1%): Pancreatitis

Neonatal Diabetes:

Very common (10% or more): Transitory diarrhea, abdominal pain, vomiting, dyspepsia

Common (1% to 10%): Tooth discoloration

Very rare (less than 0.01%): Allergic vasculitis

Frequency not reported: Allergic skin reactions including pruritus, erythema, urticaria, and morbilliform or maculopapular eruptions, angioedema, arthralgia, myalgia, vasculitis, erythema multiforme, erythema nodosum, bullous eruptions, exfoliative dermatitis, photosensitivity, Stevens-Johnson syndrome

Allergic skin reactions including pruritus, erythema, urticaria, and morbilliform or maculopapular eruptions occurred in 1.5 % of patients during clinical trials. In some cases these were transient and disappeared despite continue therapy. Hypersensitivity reactions affecting the skin usually occur within the first 6 weeks of treatment with a sulfonylurea.

Glyburide (the active ingredient contained in Glynase PresTab)

Common (1% to 10%): Allergic skin reactions including pruritus, erythema, urticaria, and morbilliform or maculopapular eruptions

Frequency not reported: Alopecia/hypotrichoses, increased sweating, facial edema, angioedema, bullous reactions, erythema multiforme, exfoliative dermatitis

Sulfonylureas:

-Frequency not reported: Porphyria cutanea tarda, photosensitivity reactions

Allergic skin reactions including pruritus, erythema, urticaria, morbilliform, erythematous and maculopapular and bullous skin eruptions or psoriasiform drug eruptions occurred in 1.5 % of patients during clinical trials. These may be transient and may disappear despite continued therapy. Bullous reactions, erythema multiforme, and exfoliative dermatitis have been reported. If skin reactions persist, this drug should be discontinued.

Changes in accommodation and/or blurred vision are thought to be related to fluctuations in glucose levels.

Frequency not reported: Changes in accommodation and/or blurred vision, diplopia, visual disturbances, blindness

Glyburide (the active ingredient contained in Glynase PresTab)

Postmarketing reports: Hemolytic anemia

Sulfonylureas:

Frequency not reported: Leukopenia, agranulocytosis, thrombocytopenia, thrombocytopenia purpura, eosinophilia, bone marrow aplasia, coagulation disorders, hemolytic anemia, aplastic anemia, anemia, pancytopenia

Glyburide (the active ingredient contained in Glynase PresTab)

Rare (less than 0.1%): Cholestatic jaundice, hepatitis

Frequency not reported: Liver function abnormalities including isolated transaminase elevations

Postmarketing reports:

Sulfonylureas:

Frequency not reported: Increased liver enzymes (AST, ALT), abnormal liver function, cholestasis, cholestatic hepatitis, granulomatous hepatitis, bilirubinemia

Neonatal Diabetes:

Very common (10% or more): Transient increased transaminases

Frequency not reported: Abnormal renal function, acute renal failure

Frequency not reported: Arthralgia, arthritis

Frequency not reported: Paresthesia, tremor, convulsions, encephalopathy, confusion, headache, cerebrovascular disorders

Frequency not reported: Deafness, fever

Frequency not reported: Acute psychosis