What Are The Side Effects Of Antihistamines?

Dizziness

When dizzy, individuals might have trouble keeping their balance, and they might feel like the ground is moving under their feet. They might experience nausea, tinnitus, and stumbling. If the dizziness is serious enough, some patients even fall over or faint. Dizziness can be a side effect of antihistamines, but it can also be caused by the allergies antihistamines are treating. When dizziness is related to the allergies themselves, it's because sinus congestion has become serious enough to affect the inner ear. Antihistamines are more likely to contribute to dizziness if patients take them with certain substances. Because antihistamines increase drowsiness, patients are likely to experience greater drowsiness and dizziness if they take them alongside alcohol, sleeping pills, muscle relaxants, anti-anxiety medications, or antidepressants. If patients are not sure what medications are safe to take with their allergy medication, they should ask their doctor or pharmacist. If every antihistamine they try causes dizziness, patients might need to treat their allergies with something else.

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Nausea And Vomiting

Nausea and vomiting are less common side effects of antihistamines, but they can still sometimes occur. For the most part, individuals will have better results if they switch to other antihistamines, but if that's not the case, they might need to undergo other treatments. Nausea and vomiting don't usually indicate a serious reaction, but patients should still keep an eye on their body. If the illness continues after discontinuing the medication, patients should see their doctor. In addition, patients should get medical help right away if there's blood in their vomit or stool. For some individuals, nausea might come on very soon after taking the antihistamine, but for others, it might not appear until they eat or drink. Individuals can mitigate the nausea-inducing effects of some medications, including antihistamines, by taking them with food. Before doing so, though, they should always ask a pharmacist for advice.

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