Description
Diphenhydramine Hydrochloride 50mg Tablets
Each tablet contains 50mg of diphenhydramine hydrochloride, a sedating antihistamine that can cause drowsiness. This medicine can help relieve temporary sleep difficulties and may also treat certain allergy symptoms, depending on the specific product and instructions. In the UK, pharmacies supply diphenhydramine in different formulations, while some products require a prescription.
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What Is Diphenhydramine Hydrochloride 50mg Use For?
Diphenhydramine can help with short-term sleep problems, including temporary difficulty getting to sleep. It can also relieve symptoms associated with allergies, such as hay fever, hives and itching. The appropriate use depends on the formulation and the reason for treatment.
As a sedating antihistamine, diphenhydramine can make you feel sleepy. This effect makes it useful in some short-term sleep treatments, but it can also affect alertness during the day.
Dosage and How to Take It
For short-term insomnia, NHS guidance states that adults usually take 50mg around 20 minutes before bedtime. Always follow the instructions supplied with your medicine or advice from your doctor or pharmacist.
Swallow tablets whole with water and do not take more than the recommended amount. Diphenhydramine should normally only provide short-term support for sleep. If you need it for longer than two weeks, speak with a doctor.
Side Effects
Diphenhydramine can cause side effects, although not everyone experiences them. Common effects may include:
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Sleepiness or drowsiness
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Dizziness or feeling unsteady
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Difficulty concentrating
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Dry mouth
Do not drive, cycle or operate machinery if the medicine makes you sleepy, dizzy or less alert.
Safety Information
Avoid alcohol while taking diphenhydramine because it can increase drowsiness and other side effects. Also, tell your doctor or pharmacist about other medicines, vitamins or supplements you take, as some combinations can increase sleepiness or cause other interactions.
Do not take two antihistamines together unless a doctor or pharmacist advises you to do so. Continuous use for longer than recommended can lead to problems, so follow the advised treatment duration carefully.
Diphenhydramine 50mg in the UK
In the UK, 50mg tablets provide a commonly available strength of diphenhydramine hydrochloride. The electronic Medicines Compendium provides product information covering dosage, warnings and patient information for specific formulations.
The electronic Medicines Compendium provides product information for Diphenhydramine Hydrochloride 50 mg tablets, including dosage, warnings and patient information.
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Frequently Asked Questions
Is diphenhydramine 50mg use as a sleep aid?
Yes. Diphenhydramine can provide short-term relief from temporary sleep difficulties. It works partly because its sedating antihistamine effect can make you feel sleepy.
How long does diphenhydramine take to work?
For sleep problems, diphenhydramine usually starts making you feel drowsy within around 20 to 30 minutes.
Can I take diphenhydramine every night?
Doctors generally recommend diphenhydramine for short-term sleep problems. Do not continue treatment for longer than recommended without speaking with a doctor or pharmacist.
Who should not take diphenhydramine for sleep?
Children under 16 should not take diphenhydramine to help them sleep. If you are unsure whether it is suitable for you, ask a doctor or pharmacist before taking it.






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