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Can you take Carbidopa / levodopa with Dichlorphenamide?

1 drug interaction and 28 additional warnings found for the following 2 drugs:

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Drug interactions

Moderate drug interactions

Moderate:

levodopa dichlorphenamide

Applies to: carbidopa / levodopa and dichlorphenamide

Using levodopa together with dichlorphenamide may have additive effects in lowering your blood pressure and/or may increase the risk of side effects such as dizziness, lightheadedness, fainting, changes in pulse or heart rate and/or sudden somnolence and impairment in thinking and judgment. These side effects are most likely to be seen at the beginning of treatment, following a dose increase, or when treatment is restarted after an interruption. Let your doctor know if you develop these symptoms or if they become troublesome. You should avoid the use of alcohol while being treated with these medications. Avoid driving or operating hazardous machinery until you know how the medications affect you and use caution when getting up from a sitting or lying position. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Food/lifestyle interactions

Moderate food/lifestyle interactions

Moderate:

levodopa Food/Lifestyle

Applies to: carbidopa / levodopa

Alcohol can increase the nervous system side effects of levodopa such as dizziness, drowsiness, and difficulty concentrating. Some people may also experience impairment in thinking and judgment. You should avoid or limit the use of alcohol while being treated with levodopa. You may experience reduced effectiveness of levodopa in the presence of foods or enteral (tube) feedings with a high protein content. This may make the symptoms of Parkinson's disease worse. Talk with your doctor or nutrition counselor about the best foods to eat while you are taking this medication. Contact your doctor if your condition changes.

Moderate:

levodopa multivitamins with minerals

Applies to: carbidopa / levodopa

Levodopa and multivitamins with minerals should not be taken orally at the same time. Products that contain iron may interfere with the absorption of levodopa and reduce its effectiveness. You should separate the dosing of these medications by as much as possible. Contact your doctor if your Parkinson symptoms worsen. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Disease interactions

26 potential interactions Applies to: 20 conditions, including Depression, Asthma, COPD, Gout, and Hypokalemia.

Acidosis

Major:

dichlorphenamide

Dichlorphenamide has a major potential interaction with Acidosis.

The use of dichlorphenamide is contraindicated acidotic patients (hyperchloremic or respiratory).

Moderate:

dichlorphenamide

Dichlorphenamide has a moderate potential interaction with Acidosis.

Carbonic anhydrase inhibitors may exacerbate pulmonary disease in patients with elevated pCO2 levels. Respiratory acidosis may be precipitated or increased in these patients. Therapy with carbonic anhydrase inhibitors should be administered cautiously in patients with respiratory acidosis, and conditions where alveolar ventilation may be impaired (pulmonary obstruction, emphysema, etc) and can precipitate or aggravate acidosis. Respiratory status should be monitored during therapy.

Adrenal Insufficiency

Major:

dichlorphenamide

Dichlorphenamide has a major potential interaction with Adrenal Insufficiency.

The use of dichlorphenamide is contraindicated in adrenocortical insufficiency.

Asthma

Major:

carbidopa / levodopa

The levodopa in carbidopa / levodopa has a major potential interaction with Asthma.

Because of the risk of bronchospasm, use of levodopa in patients with asthma, COPD, or other chronic underlying lung disease is not recommended.

Cardiovascular Conditions and Disorders

Major:

carbidopa / levodopa

The levodopa in carbidopa / levodopa has a major potential interaction with Cardiovascular Conditions and Disorders.

Cardiac irregularities occur infrequently in patients on dopamine agonists. The initial administration and titration is recommended to occur under close cardiac monitoring in a facility equipped for intensive cardiac care. Adverse cardiac affects may include palpitation, sinus tachycardia, ventricular tachycardia, extrasystole, atrial flutter or fibrillation, or block of AV conduction.

COPD

Major:

carbidopa / levodopa

The levodopa in carbidopa / levodopa has a major potential interaction with COPD.

Because of the risk of bronchospasm, use of levodopa in patients with asthma, COPD, or other chronic underlying lung disease is not recommended.

Major:

dichlorphenamide

Dichlorphenamide has a major potential interaction with COPD.

Dichlorphenamide should not be used in patients with severe pulmonary obstruction who are unable to increase their alveolar ventilation as their acidosis may be increased.

Moderate:

dichlorphenamide

Dichlorphenamide has a moderate potential interaction with COPD.

Carbonic anhydrase inhibitors may exacerbate pulmonary disease in patients with elevated pCO2 levels. Respiratory acidosis may be precipitated or increased in these patients. Therapy with carbonic anhydrase inhibitors should be administered cautiously in patients with respiratory acidosis, and conditions where alveolar ventilation may be impaired (pulmonary obstruction, emphysema, etc) and can precipitate or aggravate acidosis. Respiratory status should be monitored during therapy.

Dehydration

Major:

dichlorphenamide

Dichlorphenamide has a major potential interaction with Dehydration.

The use of dichlorphenamide is contraindicated in patients with hyponatremia or hypokalemia, or in conditions in which serum levels of sodium or potassium are depressed.

Depression

Moderate:

carbidopa / levodopa

The carbidopa in carbidopa / levodopa has a moderate potential interaction with Depression.

Caution and observation is recommended when treating patients with carbidopa, as depression with concomitant suicidal tendencies may develop or be exacerbated.

Diabetes Mellitus

Moderate:

dichlorphenamide

Dichlorphenamide has a moderate potential interaction with Diabetes Mellitus.

Elevation of blood glucose, possibly caused by hypokalemia, and glycosuria have been reported rarely in diabetics receiving carbonic anhydrase inhibitors. Therapy with carbonic anhydrase inhibitors should be administered cautiously in patients with diabetes mellitus. Routine glucose monitoring is recommended during therapy.

Gastrointestinal Hemorrhage

Moderate:

carbidopa / levodopa

The levodopa in carbidopa / levodopa has a moderate potential interaction with Gastrointestinal Hemorrhage.

The use of levodopa, especially in combinations with carbidopa, has been associated with an increase in the frequency of gastrointestinal hemorrhage. Therapy with levodopa should be administered cautiously in patients with a history of peptic ulcer disease or gastrointestinal hemorrhage.

Glaucoma, Narrow Angle

Major:

carbidopa / levodopa

The carbidopa in carbidopa / levodopa has a major potential interaction with Glaucoma, Narrow Angle.

Carbidopa-levodopa products are contraindicated in patients with narrow-angle glaucoma.

Glaucoma/Intraocular Hypertension

Major:

carbidopa / levodopa

The levodopa in carbidopa / levodopa has a major potential interaction with Glaucoma/Intraocular Hypertension.

The use of levodopa is contraindicated in patients with acute closed-angle glaucoma. Levodopa (with or without carbidopa) may be used in patients with open-angle glaucoma who are receiving appropriate therapy.

Gout

Moderate:

dichlorphenamide

Dichlorphenamide has a moderate potential interaction with Gout.

Uric acid excretion is decreased during therapy with carbonic anhydrase inhibitors, and gout may be exacerbated. Therapy with carbonic anhydrase inhibitors should be administered cautiously in patients with gout. Elevated serum uric acid levels return to normal when the drug is discontinued. Monitoring of uric acid levels is recommended in these patients.

Hypokalemia

Major:

dichlorphenamide

Dichlorphenamide has a major potential interaction with Hypokalemia.

The use of dichlorphenamide is contraindicated in patients with hyponatremia or hypokalemia, or in conditions in which serum levels of sodium or potassium are depressed.

Hyponatremia

Major:

dichlorphenamide

Dichlorphenamide has a major potential interaction with Hyponatremia.

The use of dichlorphenamide is contraindicated in patients with hyponatremia or hypokalemia, or in conditions in which serum levels of sodium or potassium are depressed.

Hypotension

Moderate:

carbidopa / levodopa

The carbidopa and levodopa in carbidopa / levodopa both have a moderate potential interaction with Hypotension.

Dopamine agonists may impair the systemic regulation of blood pressure, with resultant orthostatic hypotension at any time, but especially during dose escalation. Additionally, patients with Parkinson's disease may have an impaired capacity to respond to an orthostatic challenge. For these reasons, patients with Parkinson's disease (or restless legs syndrome) who are being treated with dopaminergic agonists typically require careful monitoring for signs/symptoms of orthostatic hypotension, especially during dose escalation, and should be advised of this risk.

Liver Disease

Major:

carbidopa / levodopa

The levodopa in carbidopa / levodopa has a major potential interaction with Liver Disease.

The pharmacokinetics of levodopa have not been studied in patients with hepatic or renal impairment. Therapy with levodopa should be administered cautiously in patients with liver or disease. Periodic monitoring of hepatic and renal function is recommended during extended therapy.

Major:

dichlorphenamide

Dichlorphenamide has a major potential interaction with Liver Disease.

The use of dichlorphenamide is contraindicated in hepatic insufficiency.

Psychosis

Major:

carbidopa / levodopa

The levodopa in carbidopa / levodopa has a major potential interaction with Psychosis.

The use of dopamine agonists has been associated with psychiatric effects such as hallucinations, psychosis, confusion, anxiety, mania, hypomania, depression, rapid mood cycling, nightmares, and hypersexuality. Therapy with dopamine agonists should be administered cautiously in psychotic patients and all patients should be carefully observed for development of depression and suicidal tendencies.

Moderate:

carbidopa / levodopa

The carbidopa and levodopa in carbidopa / levodopa both have a moderate potential interaction with Psychosis.

Ordinarily, patients with major psychotic disorder should not be treated with dopaminergic antiparkinsonian agents, because of the risk of exacerbating psychosis. Hallucinations and psychotic-like behavior have been reported with dopaminergic medications. In addition, certain medications used to treat psychosis may exacerbate the symptoms of Parkinson's disease and may decrease the effectiveness of these drugs. The use of bromocriptine in patients with severe psychotic disorders is not recommended.

Renal Dysfunction

Major:

carbidopa / levodopa

The levodopa in carbidopa / levodopa has a major potential interaction with Renal Dysfunction.

The pharmacokinetics of levodopa have not been studied in patients with hepatic or renal impairment. Therapy with levodopa should be administered cautiously in patients with liver or disease. Periodic monitoring of hepatic and renal function is recommended during extended therapy.

Major:

dichlorphenamide

Dichlorphenamide has a major potential interaction with Renal Dysfunction.

The use of dichlorphenamide is contraindicated in renal failure.

Skin Cancer

Major:

carbidopa / levodopa

The levodopa in carbidopa / levodopa has a major potential interaction with Skin Cancer.

The use of levodopa is considered by manufacturers to be contraindicated in patients with a history of melanoma or in patients with suspicious, undiagnosed skin lesions. Levodopa reportedly may activate malignant melanoma, although some investigators have found a causal relationship to be tenuous.

Sleep Disorders

Moderate:

carbidopa / levodopa

The carbidopa and levodopa in carbidopa / levodopa both have a moderate potential interaction with Sleep Disorders.

Patients treated with products containing carbidopa and levodopa report excessive somnolence and falling asleep while engaged in daily activities, sometimes with no warning sign of drowsiness. Advise patients about the risks, especially those suffering from sleep disorders or using concomitant sedating medications.

More resources

carbidopa / levodopa

A total of 534 drugs are known to interact with carbidopa / levodopa.

dichlorphenamide

A total of 264 drugs are known to interact with dichlorphenamide.

Drug Interaction Classification

These classifications are only a guideline. The relevance of a particular drug interaction to a specific individual is difficult to determine. Always consult your healthcare provider before starting or stopping any medication.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.
Unknown No interaction information available.

Further information

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