What is Benadryl used for?

Diphenhydramine is an antihistamine used to relieve symptoms of allergy, hay fever, and the common cold. These symptoms include rash, itching, watery eyes, itchy eyes/nose/throat, cough, runny nose, and sneezing. It is also used to prevent and treat nausea, vomiting and dizziness caused by motion sickness.

Does Benadryl make you sleepy?

First-generation antihistamines such as diphenhydramine (Benadryl®) usually cause drowsiness because they are less likely to affect the histamine produced in the brain or have other unwanted effects in the brain.

Is it okay to take Benadryl to sleep?

Although antihistamines like Benadryl will make you feel sleepy, they’re not a great choice when it comes to treating insomnia. Not only can they affect your sleep quality, but they’ll also become less effective very quickly, meaning you may not notice any benefits if you use them often.

What are the side effects of Benadryl?

What Are Side Effects of Benadryl?

  • drowsiness,
  • fatigue,
  • tiredness,
  • sleepiness,
  • dizziness,
  • disturbed coordination,
  • constipation,
  • dry mouth/nose/throat,

How quickly does Benadryl work?

Benadryl works quickly, with a maximum effect in about an hour. It distributes throughout the body, including the central nervous system. As a result, Benadryl can make you drowsy. Other Benadryl side effects include dry mouth, dizziness, and fast heart rate.

How fast does Benadryl work?

How long does it take diphenhydramine (Benadryl) to start working? Diphenhydramine (Benadryl) starts to work pretty quickly. You can expect to it to kick in within about 15 to 30 minutes. Its full effects can be felt around 2 hours after your dose.

How long will Benadryl make me sleep?

The effects of diphenhydramine last from four to six hours. Benadryl in the injectable form has a rapid onset of action. When used as a night-time sleeping aid, the usual dosage of Benadryl is 50mg at bedtime. A lower dosage may be needed in the elderly.

What can you not mix with Benadryl?

Benadryl may interact with other types of medication, which can heighten the side effects….Examples of medications that may interact with Benadryl include:

  • antidepressants.
  • stomach ulcer medicine.
  • cough and cold medicine.
  • other antihistamines.
  • diazepam (Valium)
  • sedatives.