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Tolazamide

Generic Name: tolazamide (tole AZ a mide)
Brand Name: Tolinase
Physician reviewed tolazamide patient information - includes tolazamide description, dosage and directions.
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Drug Information:
Tolazamide causes the pancreas to produce insulin and increases your body's response to it. Tolazamide is used together with diet and exercise to improve blood sugar control in adults with type 2 diabetes mellitus. Tolazamide is not for treating type 1 diabetes. Tolazamide may also be used for purposes not listed in this medication guide. Follow all directions on your medicine label and package. Tell each of your healthcare prOviders about all your medical conditions, allergies, and all medicines you use. Learn more

Tolazamide Side Effects

Tolazamide Side Effects

For the Consumer

Applies to tolazamide: oral tablet

Along with its needed effects, tolazamide 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 tolazamide:

Rare

  • Abdominal or stomach pain
  • chills
  • clay-colored stools
  • dark urine
  • diarrhea
  • difficulty swallowing
  • dizziness
  • fast heartbeat
  • fever
  • headache
  • hives
  • itching
  • loss of appetite
  • puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
  • rash
  • shortness of breath
  • skin rash
  • tightness in chest
  • unpleasant breath odor
  • unusual tiredness or weakness
  • vomiting of blood
  • wheezing
  • yellow eyes or skin

Incidence not known

  • Agitation
  • back, leg, or stomach pains
  • black, tarry stools
  • bleeding gums
  • blood in urine or stools
  • chest pain
  • coma
  • confusion
  • convulsions
  • cough or hoarseness
  • decreased urine output
  • depression
  • difficulty breathing
  • fast or irregular heartbeat
  • fatigue
  • fever with or without chills
  • fluid-filled skin blisters
  • general body swelling
  • general feeling of tiredness or weakness
  • hostility
  • increased thirst
  • irritability
  • itching of the skin
  • lethargy
  • light-colored stools
  • lower back or side pain
  • muscle pain or cramps
  • muscle twitching
  • nausea or vomiting
  • nosebleeds
  • painful or difficult urination
  • pale skin
  • pinpoint red spots on 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 tolazamide:

Symptoms of overdose

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

Some side effects of tolazamide 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

Rare

  • Feeling of constant movement of self or surroundings
  • sensation of spinning

Incidence not known

  • Redness or other discoloration of skin
  • severe sunburn

For Healthcare Professionals

Applies to tolazamide: oral tablet

General

The most commonly reported adverse reactions have included gastrointestinal disturbances such as nausea, epigastric fullness, and heartburn.

Metabolic

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

Frequency not reported: Hypoglycemia

Sulfonylureas:

Frequency not reported: Hepatic porphyria

Gastrointestinal

Gastrointestinal disturbances such as nausea, epigastric fullness, and heartburn tend to be dose related and may disappear when dosage is reduced.

Common (1% to 10%): Nausea, epigastric fullness, heartburn

Cardiovascular

In the University Group Diabetes Program (UGDP) study, cardiovascular mortality rate was approximately 2.5 times higher in patients treated for 5 to 8 years with diet plus tolbutamide 1.5 g per day compared with that of patients treated with diet alone. The UGDP study was a long-term prospective clinical trial designed to evaluate the effectiveness of glucose lowering drugs in preventing or delaying vascular complications in patients with type 2 diabetes mellitus (n=823). Tolbutamide was stopped based on the increase in cardiovascular mortality; a significant increase in total mortality was not observed, but stopping the drug may have limited the ability to measure that. In view of the close similarities in mode of action and chemical structure among sulfonylureas, these results may apply to other drug in this class.

Sulfonylureas:

Frequency not reported: Increased cardiovascular mortality

Hypersensitivity

Frequency not reported: Hypersensitivity reactions

Hypersensitivity reactions described as skin reactions, e.g. pruritus, erythema, urticaria, and morbilliform or maculopapular eruptions occurred in 0.4% of patients during clinical trials. These may be transient and may disappear despite continued therapy; however, if skin reactions persist, this drug should be discontinued.

Nervous system

Uncommon (0.1% to 1%): Dizziness, headache, weakness

Hepatic

Rare (less than 0.1%): Cholestatic jaundice

Endocrine

Frequency not reported: Hyponatremia

Sulfonylureas:

Frequency not reported: Syndrome of inappropriate antidiuretic hormone (SIADH) secretion

Other

Uncommon (0.1% to 1%): Fatigue, malaise, vertigo

Hematologic

Sulfonylureas:

Rare (less than 0.1%): Leukopenia, agranulocytosis, thrombocytopenia, hemolytic anemia, aplastic anemia, pancytopenia

Dermatologic

Uncommon (0.1% to 1%): Allergic skin reactions (pruritus, erythema, urticaria, and morbilliform or maculopapular eruptions)

Sulfonylureas:

Frequency not reported: Photosensitivity, porphyria cutanea tarda

Editorial References and Review

Medically reviewed by USARx EDITORIAL TEAM Last updated on 1/1/2020.

Source: Drugs.com Tolazamide (www.drugs.com/mtm/tolazamide.html).