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]
