What special precautions should I follow?
Before taking diphenidol:
As is the case for every type of medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For diphenidol, the following should be considered:
Allergies - Tell your doctor if you have ever had any unusual or allergic reaction to diphenidol. Also tell your health care professional if you are allergic to any other substances, such as foods, preservatives, or dyes.
Pregnancy - Diphenidol has not been shown to cause birth defects or other problems in human or animal studies.
Breast-feeding - Diphenidol has not been reported to cause problems in nursing babies.
Children - There is no specific information comparing the use of diphenidol for dizziness in children with use in other age groups. Also, there is no specific information about the use of diphenidol for nausea and vomiting in children who weigh less than 22.8 kilograms (50 pounds).
Older adults - Many medicines have not been studied specifically in older people. Therefore, it may not be known whether they work exactly the same way they do in younger adults or if they cause different side effects or problems in older people. Moreover, there is no specific information comparing use of diphenidol in the elderly with use in other age groups.
Other medicines - Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking diphenidol, it is especially important that your health care professional know if you are taking any of the following: central nervous system (CNS) depressants (medicines that cause drowsiness) or tricyclic antidepressants (medicine for depression). Using these medicines with diphenidol may increase the CNS depressant effects.
Other medical problems - The presence of other medical problems may affect the use of diphenidol. Make sure you tell your doctor if you have any other medical problems, especially an enlarged prostate, glaucoma, intestinal blockage, low blood pressure, stomach ulcer (diphenidol may make the condition worse), kidney disease or urinary tract blockage (higher blood levels of diphenidol may occur, increasing the chance of side effects).
Why is this medication prescribed?
Dosage and using this medicine
What should I do if I forget a dose?
What side effects can this medication cause?