- Hay Fever
- Diphenhydramine
Diphenhydramine
Buy treatment for hay fever online at SpeedyHealth.
Hay fever
How to take
For treatment of hay fever
Take 1 to 2 tablets every 4 to 6 hours as needed, but do not exceed 6 doses per day.
Take with water
Swallow tablets whole with water for effective relief.
If you take too much
If you take more than the recommended dose, seek medical advice without delay.
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Diphenhydramine overview
| Type of medicine | Antihistamine - First-generation |
| Used for | Allergic rhinitis |
| Active ingredient(s) | Diphenhydramine |
| Works by | Reducing the effects of histamine |
| Effective within | 15 minutes |
| Available as | Tablets |
| Available strength | 25mg |
| Usage | 1 to 2 tablets every 4 to 6 hours |
| Manufacturer | Various |
| Packaging | Blister pack |
| Storage | Store at room temperature and keep out of reach and sight from children |
| Prescription required? | No |
| Who can consult | Adults with allergic rhinitis |
About Diphenhydramine
What is Diphenhydramine and what is it used for?
Diphenhydramine is a first-generation sedating antihistamine used to relieve allergy symptoms such as sneezing, a runny or itchy nose, watery or itchy eyes, and skin rashes. Its sedative effect also makes it suitable for short-term insomnia or motion sickness.
Is Diphenhydramine the same as Benadryl?
Yes. Diphenhydramine and Benadryl contain the same active ingredient, diphenhydramine.
Diphenhydramine is the generic version, whilst Benadryl is the branded version. Both work the same way to relieve hay fever and allergy symptoms.
Who can use Diphenhydramine?
If you are 12 or older and experience symptoms of allergic rhinitis (hay fever), you can use diphenhydramine.
Do not take diphenhydramine if you:
- Have had an allergic reaction to diphenhydramine
- Are taking other medication containing diphenhydramine
Use with caution if you:
- Have lung problems such as asthma or COPD
- Have eye problems such as glaucoma
- Have kidney or liver problems
- Are pregnant or trying to conceive
- Are breastfeeding
For a complete list of precautions and medicine interactions, consult the patient information leaflet.
What are the possible side effects?
Common side effects include:
- Drowsiness
- Dizziness
- Dry mouth
- Eczema or skin rash
Stop using and seek help if you experience:
- Pounding or fluttering in your chest
- Painful urination
- Passing little or no urine
- Confusion
Seek immediate help if you experience symptoms of an allergic reaction such as:
- Breathlessness or wheezing
- Swelling in the face or skin rashes
What should I avoid while taking Diphenhydramine?
Diphenhydramine can cause drowsiness and dizziness. Avoid driving or operating machinery until you know how it affects you.
How long does it take to work?
Diphenhydramine usually works within 15 to 30 minutes, with full effect typically felt within 1 to 2 hours.
How do I buy Diphenhydramine online from SpeedyHealth?
You will need to complete a short consultation form. This allows our doctors to check that the medicine is safe and appropriate for you.
If suitable, your treatment will be prepared and dispatched directly to you.
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