The link between Benadryl and hypertension stems from the action of the drug on blood vessels and its interaction with antihypertensives.
Benadryl is an antihistamine used to treat allergic symptoms such as itching, watery eyes, flooded skin and a runny nose. It is also a popular cold remedy and millions of people use it during the cold season to clean their stuffy noses.
It is important to remember that Benadryl is a registered trademark. Diphenhydramine is an active component of the medication that has a possible effect on blood pressure. This means that medicines containing diphenhydramine can affect blood pressure.
Benadryl is a decongestant that works by compressing the blood vessels. If you have knowledge of high blood pressure, you will appreciate that narrowing of the blood vessels is the cause of high blood pressure.
Although the medication is intended to tighten the blood vessels in the nose and sinuses, it unfortunately pushes the blood vessels throughout the body.
When the blood vessels are constricted, the heart works harder to push the blood through the constricted vessels, resulting in a higher blood pressure. This increases the risk of damage to important organs such as the heart and kidneys.
To reduce the risk of narrowing the entire network of veins of the body leading to high blood pressure, some drug manufacturers recommend the use of nasal spray based decongestants. This helps to locate the narrowing of the blood vessels towards the nose against oral syrup, pills or capsules that can restrict the body’s blood flow.
From this point of view, oral administration of Benadryl can cause serious problems in people with high blood pressure. For this reason, according to the pharmaceutical information on the drug, it is not allowed to use the drug in people with severe hypertension, severe heart disease, tachycardia or serious heart disease.
The relationship between Benadryl and hypertension also stems from Benadryl’s potential to interact with blood pressure drugs. For example, Benadryl may interact with beta-blockers, which are medications that slow the heart rate to lower blood pressure.
Beta blockers are also used to treat certain heart diseases. Diphenhydramine or Benadryl is known to influence the effectiveness of other drugs or the effectiveness of Benadryl itself.
Possible side effects of Benadryl
Below are some of the known side effects of Benadryl. Don’t forget that the actual side effects vary from person to person. Some people may also suffer certain side effects that are not necessarily mentioned here. Whether the side effects are mild or severe depends on the dose taken and other factors that are known or unknown.
- Ask for it.
- Dry mouth
- Awakening (especially with children)
- Thickening of the mucus
- Blurred vision or any change in sight
- Difficult or painful urination
The information on this website is not intended to replace medical advice.
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Alternatives to benzadryl
If you are worried about Benadryl and high blood pressure, there are other options on the market. Benadryl is the first generation of antihistamines, and not all antihistamines are the same. Second-generation drugs such as Claritin, Clarinex, Zyrtec and Allegra were developed a few years later to eliminate some of the side effects of Benadryl. These second-generation drugs are equally effective in relieving allergic symptoms. The only difference is that many of them are prescription-only. If, with the help of your doctor, you decide to use Claritin instead of Claritin D, which has the same effect of pseudoephedrine as a decongestant, you should be able to cope even with high blood pressure.
Allergy facts and figures
- Allergic: – 30% American adults, 40% children.
- Nose allergies: Fifty million.
- The deadliest reaction in: –Afro-Americans
- The cost of allergies per year: – $80 billion.
- Skin allergy: – 8.8 million children (2015)
- The most important allergens: Peanut
- Allergy to latex: – 1% of American pop music
- Allergic: – 30% American adults, 40% children.
- Allergic to insect bites: – 5% US Pop
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