Benadryl Allergy capsules use diphenhydramine as the main drug ingredient, according to drugs.com. Benadryl Allergy is used to treat seasonal and food allergy symptoms such as sneezing, hives, eye irritation and other common allergic reaction symptoms. Other uses are to prevent motion sickness and as a sleeping aid. The drug works by restricting the central nervous system and prohibiting the production of histamine in the body. Benadryl Allergy is used to treat and prevent allergic reactions but has various side effects.
Drowsiness
The most common side effect of Benadryl Allergy is marked drowsiness, according to drugwatch.com. The suppression of the central nervous system is what causes the individual to feel tired. Operating machinery or driving a vehicle is not recommended while taking Benadryl Allergy because of the sedating effect. Alcohol should not be digested while taking Benadryl Allergy as it can increase the sedation effect.
Dry Mouth
It is recommended to take Benadryl Allergy with a full glass of water to prevent dry mouth, according to drugs.com. Dry mouth is a result of the drug drying up liquid in the body. This is why the drug is commonly used to reduce mucus in the throat and ears. Drink plenty of water while taking Benadryl Allergy.
Lack of Coordination
The sedation effects of Benadryl Allergy can cause lack of coordination. Common daily activities may become increasingly difficult to perform such as typing, outdoor yard work and mental activities such as participating in conversations. This can affect a person’s abilities at work.
Dizziness
Dizziness may occur while taking Benadryl Allergy, according to drugwatch.com. Benadryl Allergy can cause a person to feel lightheaded or as if he is losing consciousness. The condition can lead to nausea, pale skin, blurred vision, weakness, loss of balance, a spinning sensation, fatigue and difficulty concentrating.
Severe Allergic Reaction
In rare cases Benadryl Allergy can cause a severe allergic reaction that causes hives, the swelling of the tongue, shortness of breath and chest pain, according to drugs.com. These symptoms are not considered normal and should be evaluated by a doctor. If someone experiences these symptoms, she should discontinue the use of the medication unless otherwise directed by a physician.
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