Keveyis Side Effects

Generic name: dichlorphenamide

Medically reviewed by Drugs.com. Last updated on Oct 16, 2023.

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

Applies to dichlorphenamide: oral tablet.

Serious side effects of Keveyis

Along with its needed effects, dichlorphenamide (the active ingredient contained in Keveyis) 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 dichlorphenamide:

Incidence not known

• Abdominal or stomach pain
• black, tarry stools
• blistering, peeling, or loosening of the skin
• chest pain or discomfort
• chills
• confusion
• convulsions
• cough or hoarseness
• dark urine
• decreased urine
• diarrhea
• dilated neck veins
• dizziness
• drowsiness
• dry mouth
• extreme fatigue
• fever with or without chills
• general feeling of tiredness or weakness
• headache
• increased thirst
• irregular breathing
• irregular heartbeat
• itching or rash
• joint or muscle pain
• light-colored stools
• loss of appetite
• lower back or side pain
• mood changes
• muscle pain or cramps
• nausea or vomiting
• numbness or tingling in the hands, feet, or lips
• painful or difficult urination
• rapid, deep breathing
• red skin lesions, often with a purple center
• red, irritated eyes
• restlessness
• sore throat
• sores, ulcers, or white spots in the mouth or on the lips
• stomach cramps
• swelling of the face, fingers, feet, or lower legs
• swollen or painful glands
• tightness in the chest
• unpleasant breath odor
• unusual bleeding or bruising
• unusual tiredness or weakness
• vomiting of blood
• weight gain
• yellow eyes or skin

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

Symptoms of overdose

• Bloody or cloudy urine
• bloody, black, or tarry stools
• burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
• continuing ringing or buzzing or other unexplained noise in the ears
• difficult or painful urination
• fainting
• hearing loss
• high fever
• pale skin
• shakiness and unsteady walk
• shakiness in the legs, arms, hands, or feet
• sudden decrease in the amount of urine
• unsteadiness, trembling, or other problems with muscle control or coordination

Other side effects of Keveyis

Some side effects of dichlorphenamide 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:

More common

• Burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
• change in taste
• difficulty with moving
• general feeling of discomfort or illness
• loss of taste
• muscle pain or stiffness
• muscle spasms
• muscle twitching
• pain in the joints
• trouble performing routine tasks
• unusual drowsiness, dullness, tiredness, weakness, or feeling of sluggishness

Incidence not known

• Decreased awareness or responsiveness
• loss of memory
• problems with memory
• seeing, hearing, or feeling things that are not there
• severe sleepiness

For Healthcare Professionals

Applies to dichlorphenamide: oral tablet.

Cardiovascular

Postmarketing reports: Cardiac failure^[Ref]

Dermatologic

Common (1% to 10%): Rash, pruritus^[Ref]

Gastrointestinal

Common (1% to 10%): Diarrhea, nausea^[Ref]

Hematologic

Postmarketing reports: Pancytopenia^[Ref]

Hypersensitivity

Frequency not reported: Hypersensitivity, anaphylaxis, idiosyncratic reactions^[Ref]

Metabolic

Common (1% to 10%): Weight decreased

Frequency not reported: Hypokalemia, metabolic acidosis^[Ref]

Musculoskeletal

Common (1% to 10%): Muscle spasms, arthralgia, muscle twitching^[Ref]

Nervous system

Very common (10% or more): Paresthesia (up to 44%), dysgeusia (up to 14%)

Common (1% to 10%): Headache, hypoesthesia, lethargy, dizziness

Postmarketing reports: Convulsion, syncope, tremor^[Ref]

Other

Frequency not reported: Falls

Postmarketing reports: Fetal death^[Ref]

Psychiatric

Very common (10% or more): Cognitive disorder (up to 14%), confusional state (up to 11%)

Postmarketing reports: Amnesia, hallucination, stupor, psychotic disorder^[Ref]

Renal

Postmarketing reports: Nephrolithiasis, renal tubular necrosis^[Ref]

Respiratory

Common (1% to 10%): Dyspnea, pharyngolaryngeal pain^[Ref]

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.

Medical Disclaimer