You're not logged in. Please log in to earn stock or Bitcoin rewards on your prescription purchase.
Diphen
Diphen is a brand-name medication that contains diphenhydramine, an antihistamine used to treat allergy symptoms such as runny nose, sneezing, itchy eyes, and rashes. It is also used to treat motion sickness, insomnia, and cough. As a first-generation antihistamine, Diphen has sedative effects and is often used as a short-term sleep aid.
Rx. Enter your prescription
How would you like to get your prescription? Select an option
Pharmacy pickup
Select from 35,000 pharmacies
Free two-day delivery
Coming soon!
Find a pharmacy near you. Enter your ZIP code
Are you a member? Sign up or log in.
Members have saved
$NaN
using our savings card for instant savings.
Don't pay full retail price and miss out on potential savings. Try it now—you have nothing to lose!
NaNM
worth of Satoshi has been rewarded to our members.
Everyone who signs up enjoys the benefits of earning FREE Bitcoin with every purchase.
How much Bitcoin can you earn with Diphen ?
The potential for Bitcoin rewards to increase and appreciate in value is a possibility to consider, which may occur over time.
See the value of your savings today
Today's Value
1 Bitcoin = $NaN
Bitcoin (BTC)
...
USD
$NaN
Adjust Bitcoin's potential value to see how much it could be worth
Potential Value
1 Bitcoin =
Bitcoin (BTC)
...
USD
$NaN
Frequently Asked Questions
How long does it take for Diphen to work?
Diphen usually starts working within 30 minutes of administration.
Can I take Diphen for insomnia long-term?
It is not recommended to take Diphen long-term for sleep. Consult your doctor if you have chronic sleep problems.
Is Diphen safe for children?
Diphen is safe for children over the age of 6 in age-appropriate doses. Consult a pediatrician before administering it to younger children.
Can I take Diphen with alcohol?
No, combining Diphen with alcohol can increase the sedative effects and cause excessive drowsiness.
What should I do if I miss a dose of Diphen?
If you miss a dose, take it as soon as you remember, but if it is almost time for your next dose, skip the missed dose. Do not double the dose to catch up.
Comprehensive Drug Guide
How Does Diphen Work?
Diphen works by blocking histamine receptors in the body, reducing the effects of histamine, which causes allergic reactions. Its ability to cross the blood-brain barrier also leads to sedative effects, making it effective as a sleep aid. Additionally, Diphen has anticholinergic properties that help reduce cough and nausea associated with motion sickness.
What is Diphen Used For?
- Allergic rhinitis (hay fever)
- Cold symptoms
- Motion sickness
- Insomnia (short-term)
- Cough relief
Common Dosages
Diphen is available in the following forms and strengths:
- Tablets: 25 mg, 50 mg
- Liquid form: 12.5 mg/5 mL
- Topical creams: 1% or 2% for skin allergies
Typical Dosing
FDA Approved Indications
- For allergies: 25-50 mg every 4-6 hours as needed.
- For motion sickness: 25-50 mg taken 30 minutes before exposure to motion, then every 4-6 hours.
- For insomnia: 50 mg at bedtime.
Who Shouldn't Take Diphen?
Diphen should not be used in individuals with:
- Known hypersensitivity to diphenhydramine or its components
- Severe breathing problems (e.g., emphysema, asthma)
- Glaucoma
- Urinary retention
Advice From The Pharmacist
- Avoid driving or operating heavy machinery after taking Diphen, as it can cause drowsiness.
- Do not take Diphen with other antihistamines or sedatives unless advised by a healthcare provider.
- Diphen can cause dry mouth, so drink plenty of water and consider using sugar-free lozenges to relieve symptoms.
Side Effects of Diphen
Common Side Effects
- Drowsiness
- Dizziness
- Dry mouth, nose, or throat
- Blurred vision
Uncommon/Severe Side Effects
- Confusion, especially in older adults
- Difficulty urinating
- Fast or irregular heartbeat
- Severe allergic reactions (rash, difficulty breathing)
Risks and Warnings of Diphen
Sedation Risk: Diphen can cause significant drowsiness, especially in combination with alcohol or other sedatives.
Elderly Use: Older adults are more prone to confusion and dizziness when taking Diphen.
Anticholinergic Effects: Long-term use can cause dry mouth, constipation, and urinary retention.
Interactions with Diphen
Common Drug Interactions
- CNS depressants: Combining Diphen with alcohol, sedatives, or tranquilizers can increase drowsiness.
- MAO inhibitors: Avoid using Diphen with monoamine oxidase inhibitors (MAOIs), as this may lead to serious drug interactions.
Alternatives to Diphen
- Loratadine (Claritin): A non-drowsy antihistamine used for allergies.
- Cetirizine (Zyrtec): A second-generation antihistamine with less sedative effects.
- Meclizine: An alternative antihistamine for motion sickness that causes less drowsiness.
