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Can you take Dipyridamole with Vitamin D2?

No drug interactions found, but 16 warnings to review for the following 2 drugs:

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Drug interactions

There were no interactions found between dipyridamole and Vitamin D2. However, this does not necessarily mean no interactions exist. Always consult your healthcare provider.

Food/lifestyle interactions

Moderate food/lifestyle interactions

Moderate:

dipyridamole Food/Lifestyle

Applies to: dipyridamole

Caffeine may interfere with the effects of dipyridamole in dilating the arteries.

You should avoid caffeine-containing products for at least 24 hours before an imaging procedure involving dipyridamole given by injection.

However, no special precaution is necessary if you are taking dipyridamole orally for maintenance.

Moderate:

ergocalciferol Food/Lifestyle

Applies to: Vitamin D2 (ergocalciferol)

Treatment with ergocalciferol may require you to adjust your dietary intake of foods which contain natural or added calcium, phosphate (organic and inorganic), and vitamin D or grapefruit.

Ingesting too much vitamin D or having elevated calcium and/or phosphorus levels in the blood and urine can lead to toxic effects, such as:

  • having an irregular heart rhythm
  • seizures
  • kidney stones
  • eventual calcification of your blood vessels, cornea and/or the soft tissues in your body

Consumption of grapefruit and grapefruit juice may also alter the blood levels and effects of ergocalciferol.

Your doctor will monitor the levels of calcium and phosphorus in your blood during treatment with ergocalciferol. Please speak with your healthcare team to determine if you require a specialized diet, particularly if you have reduced kidney function, and to discuss any other questions or concerns you have. You may require additional monitoring or a dose adjustment of ergocalciferol if your diet changes.

Fortified foods will state on their labeling how much calcium, phosphate, and/or vitamin D has been added. The National Institutes of Health, Office of Dietary Supplements also provides information on which foods contain calcium, phosphorus, and vitamin D.

You should avoid abrupt changes in your dietary calcium intake and seek medical attention if you experience early symptoms of vitamin D intoxication such as:

  • weakness
  • fatigue
  • headache
  • drowsiness
  • vertigo
  • ringing in the ears
  • loss of appetite
  • nausea
  • vomiting
  • constipation
  • dry mouth
  • metallic taste
  • muscle pain
  • bone pain
  • muscle incoordination
  • low muscle tone

Late symptoms may include:

  • frequent urination
  • excessive thirst
  • weight loss
  • conjunctivitis ("pink eye")
  • light sensitivity
  • runny nose
  • itching
  • increased body temperature
  • irregular heart rhythm

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.

Moderate:

dipyridamole Caffeine

Applies to: dipyridamole

Ask your doctor before using dipyridamole together with caffeine. Using these medications together can decrease the effects of dipyridamole.

It is recommended that caffeine including caffeine be avoided for 12 to 24 hours before dipyridamole administration. You may need a dose adjustment or special test if you use both medications.

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

13 potential interactions Applies to: 12 conditions, including Asthma, COPD, Arrhythmia, Hypotension, and Myasthenia Gravis.

Arrhythmia

Moderate:

dipyridamole

Dipyridamole has a moderate potential interaction with Arrhythmia.

Serious adverse reactions associated with the administration of intravenous dipyridamole have included cardiac death, fatal and non- fatal myocardial infarction, ventricular fibrillation, symptomatic ventricular tachycardia, stroke, transient cerebral ischemia, seizures, anaphylactoid reaction and bronchospasm. There have been reported cases of asystole, sinus node arrest, sinus node depression and conduction block. Patients with abnormalities of cardiac impulse formation/conduction or severe coronary artery disease may be at increased risk for these events. Caution is recommended.

Moderate:

Vitamin D2

The ergocalciferol in Vitamin D2 has a moderate potential interaction with Arrhythmia.

Vitamin D analogs function to increase serum calcium concentrations and can exacerbate arrhythmias, particularly in patients receiving cardiac glycosides. Therapy with vitamin D analogs should be administered cautiously in patients with or predisposed to cardiac arrhythmias. Clinical monitoring of serum electrolyte concentrations and cardiac function is recommended.

Asthma

Major:

dipyridamole

Dipyridamole has a major potential interaction with Asthma.

Dipyridamole is a phosphodiesterase inhibitor and can exacerbate bronchospasm, particularly in patients with reactive airway disease and/or chronic obstructive pulmonary disease (COPD). Therapy with dipyridamole is contraindicated in patients with active wheezing and should be administered cautiously in patients with asthma or COPD.

Biliary Obstruction

Moderate:

Vitamin D2

The ergocalciferol in Vitamin D2 has a moderate potential interaction with Biliary Obstruction.

Vitamin D analogs are fat soluble and oral formulations require bile for adequate intestinal absorption. Hepatic and/or biliary dysfunction decrease the absorption of vitamin D analogs. Metabolites of vitamin D analogs are primarily excreted in bile and feces. Ergocalciferol, cholecalciferol, and dihydrotachysterol undergo hepatic hydroxylation during metabolic activation. Hepatic impairment can alter the metabolic and therapeutic activity of certain vitamin D analogs. Alternative vitamin D analogs such as calcitriol (active form) may be considered in patients with compromised hepatic function.

COPD

Major:

dipyridamole

Dipyridamole has a major potential interaction with COPD.

Dipyridamole is a phosphodiesterase inhibitor and can exacerbate bronchospasm, particularly in patients with reactive airway disease and/or chronic obstructive pulmonary disease (COPD). Therapy with dipyridamole is contraindicated in patients with active wheezing and should be administered cautiously in patients with asthma or COPD.

Hypercalcemia

Major:

Vitamin D2

The ergocalciferol in Vitamin D2 has a major potential interaction with Hypercalcemia.

Vitamin D analogs such as calciferol and ergocalciferol should not be given to patients with hypercalcemia, malabsorption syndrome, or evidence of vitamin D toxicity.

Hypotension

Moderate:

dipyridamole

Dipyridamole has a moderate potential interaction with Hypotension.

Dipyridamole can cause peripheral vasodilation. Therapy with dipyridamole should be administered cautiously in patients with hypotension.

Liver Disease

Moderate:

Vitamin D2

The ergocalciferol in Vitamin D2 has a moderate potential interaction with Liver Disease.

Vitamin D analogs are fat soluble and oral formulations require bile for adequate intestinal absorption. Hepatic and/or biliary dysfunction decrease the absorption of vitamin D analogs. Metabolites of vitamin D analogs are primarily excreted in bile and feces. Ergocalciferol, cholecalciferol, and dihydrotachysterol undergo hepatic hydroxylation during metabolic activation. Hepatic impairment can alter the metabolic and therapeutic activity of certain vitamin D analogs. Alternative vitamin D analogs such as calcitriol (active form) may be considered in patients with compromised hepatic function.

Malabsorption Syndrome

Major:

Vitamin D2

The ergocalciferol in Vitamin D2 has a major potential interaction with Malabsorption Syndrome.

Vitamin D analogs such as calciferol and ergocalciferol should not be given to patients with hypercalcemia, malabsorption syndrome, or evidence of vitamin D toxicity.

Myasthenia Gravis

Moderate:

dipyridamole

Dipyridamole has a moderate potential interaction with Myasthenia Gravis.

Myasthenia gravis patients receiving therapy with cholinesterase inhibitors may experience worsening of their disease in the presence of dipyridamole. Caution should be exercised with these patients.

Phosphate Imbalance

Moderate:

Vitamin D2

The ergocalciferol in Vitamin D2 has a moderate potential interaction with Phosphate Imbalance.

Vitamin D analogs administered in the presence of hyperphosphatemia can result in precipitation of calcium-phosphate deposits within the vascular or renal systems or other soft tissue calcifications. A solubility product (Serum Calcium X Phosphate) should not exceed 70. Serum electrolyte concentrations should be corrected prior to vitamin D analog therapy and monitored during therapy.

Renal Dysfunction

Moderate:

Vitamin D2

The ergocalciferol in Vitamin D2 has a moderate potential interaction with Renal Dysfunction.

Ergocalciferol and cholecalciferol undergo renal biotransformation during metabolic activation. Renal impairment can alter metabolic and therapeutic activity of certain vitamin D analogs. Alternative vitamin D analogs such as dihydrotachysterol (hepatic activation) and calcitriol (active form) may be considered in patients with compromised renal function.

Tachyarrhythmia

Major:

Vitamin D2

The ergocalciferol in Vitamin D2 has a major potential interaction with Tachyarrhythmia.

The amine ergot alkaloids, ergonovine and methylergonovine, can cause serious cardiovascular complications because of their vasospastic effects. Hypertension (more often with ergonovine) has been most commonly reported, particularly when administered IV undiluted or at an excessive rate or when used in conjunction with regional anesthesia or vasoconstrictors. Headaches, seizures, cerebrovascular accidents and death have been associated with the hypertensive episodes. Other, less common adverse effects include acute myocardial infarction, transient chest pains, thrombophlebitis, tachycardia and palpitations. Therapy with ergot alkaloids should generally be avoided, except under special circumstances, in patients with chronic hypertension, preeclampsia or eclampsia, cardiovascular disease, cerebrovascular disease, or peripheral vascular disease. Caution is advised when these agents are administered to patients with venoatrial shunts, mitral valve stenosis, or sepsis. Close monitoring of cardiovascular status is highly recommended during therapy.

More resources

dipyridamole

A total of 166 drugs are known to interact with dipyridamole.

Vitamin D2

A total of 116 drugs are known to interact with Vitamin D2.

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.