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Drug interactions between Viagra and Vitamin B12

Results for the following 2 drugs:
Viagra (sildenafil)
Vitamin B12 (cyanocobalamin)

Interactions between your drugs

There were no interactions found in our database between Viagra and Vitamin B12. However, this does not necessarily mean no interactions exist. Always consult with your doctor or pharmacist.

Viagra

A total of 487 drugs (2113 brand and generic names) are known to interact with Viagra.

Vitamin B12

A total of 27 drugs (167 brand and generic names) are known to interact with Vitamin B12.

Drug and food interactions

Moderate

sildenafil food

Applies to: Viagra (sildenafil)

If you are receiving therapy with sildenafil you should avoid the regular consumption of large amounts of grapefruits and grapefruit juice. Grapefruit can raise the levels of sildenafil in your body and delay the time it takes for the medication to work. Do not increase or decrease the amount of grapefruit products in your diet without first talking to your doctor.

Switch to professional interaction data

Therapeutic duplication warnings

No therapeutic duplications were found for your selected drugs.

Drug Interaction Classification

The classifications below are a guideline only. The relevance of a particular drug interaction to a specific patient is difficult to determine using this tool alone given the large number of variables that may apply.
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 information available.

Do not stop taking any medications without consulting your healthcare provider.

Further information

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

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