What is diphenhydramine 25mg used for?
Diphenhydramine is used to relieve red, irritated, itchy, watery eyes; sneezing; and runny nose caused by hay fever, allergies, or the common cold. Diphenhydramine is also used to relieve cough caused by minor throat or airway irritation.
Will diphenhydramine HCI 25mg make you sleepy?
Diphenhydramine is an antihistamine medicine that relieves the symptoms of allergies. It’s known as a drowsy (sedating) antihistamine and is more likely to make you feel sleepy than other antihistamines.
What are the side effects of diphenhydramine HCL 25 mg?
Diphenhydramine may cause dizziness or drowsiness. If you experience dizziness or drowsiness, avoid these activities. Use alcohol cautiously. Alcohol may increase drowsiness and dizziness while taking diphenhydramine.
How often can you take diphenhydramine 25 mg?
For adults and teens, the diphenhydramine dosage is 25 to 50 mg every 4 to 6 hours. The maximum amount you should take in one day is 300 mg. Keep in mind, taking higher doses can increase the risk of side effects, including drowsiness.
What is the most common side effect of diphenhydramine?
Drowsiness, dizziness, constipation, stomach upset, blurred vision, or dry mouth/nose/throat may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly.
When should you not take diphenhydramine?
Do not use diphenhydramine for longer than 2 weeks to treat sleep problems, or longer than 7 days to treat cold or allergy symptoms. This medicine can affect the results of allergy skin tests. Tell any doctor who treats you that you are using diphenhydramine.
How long does it take for diphenhydramine to kick in?
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.
What can you not take with diphenhydramine?
Most frequently checked interactions
- Aspirin Low Strength (aspirin)
- CoQ10 (ubiquinone)
- Cymbalta (duloxetine)
- Fish Oil (omega-3 polyunsaturated fatty acids)
- Flonase (fluticasone nasal)
- Lexapro (escitalopram)
- Lyrica (pregabalin)
- Metoprolol Succinate ER (metoprolol)
What drugs should not be taken with diphenhydramine?
Tell your doctor or pharmacist if you are taking other products that cause drowsiness such as opioid pain or cough relievers (such as codeine, hydrocodone), alcohol, marijuana (cannabis), drugs for sleep or anxiety (such as alprazolam, lorazepam, zolpidem), muscle relaxants (such as carisoprodol, cyclobenzaprine), or …
How much diphenhydramine can I take to sleep?
What is the maximum dose of diphenhydramine for sleep? When used as a sleep aid the maximum recommended dosage is 76mg for diphenhydramine citrate or 50mg for diphenhydramine hydrochloride.
How many hours does diphenhydramine last?
Response and effectiveness. Benadryl is quickly absorbed after oral administration and peak effects are reached within one hour. The effects of diphenhydramine last from four to six hours. Benadryl in the injectable form has a rapid onset of action.
Will diphenhydramine raise blood pressure?
Official answer. Increased blood pressure is not a typical side effect of diphenhydramine, a first-generation antihistamine that lowers the effects of histamines in your body. However, in rare cases, the drug may cause hypotension, or decreased blood pressure.
When is the best time to take diphenhydramine?
To prevent motion sickness, take your dose 30 minutes before starting activity such as travel. To help you sleep, take your dose about 30 minutes before bedtime. If you continue to have difficulty sleeping for longer than 2 weeks, contact your doctor.
How long does diphenhydramine stay in your system?
Depending on the median value that the individual lands on, diphenhydramine can stay in your system anywhere between 13.2 and 49 hours.
Is it OK to take diphenhydramine every night?
Is it safe to take diphenhydramine every night? You should not take diphenhydramine every night. While it may be helpful during limited periods of insomnia, your body will build up a tolerance for the medication over time, and it will no longer have the desired effect.
How long does it take for 25 mg of Benadryl to wear off?
The standard dose of diphenhydramine in brand name Benadryl is 25 mg per dose for adults and 12.5 mg per dose in children’s formulas. For the average healthy adult, elimination half-life ranges from 6.7 to 11.7 hours. So between 6 to 12 hours after taking Benadryl, half the drug will be eliminated from the body.
Does diphenhydramine raise heart rate?
Benadryl can increase your heart rate and may cause more serious heart-related side effects, such as heart rhythm problems. If you already have heart disease, taking Benadryl can make your condition worse. Talk with your doctor about whether it’s safe for you to take Benadryl.
Does diphenhydramine cause weight gain?
Antihistamines can also make you feel tired and unmotivated to exercise. Antihistamines that can cause weight gain include: Diphenhydramine (Benadryl and others) Cetirizine (Zyrtec)
Can you take diphenhydramine every night?
What should you not take 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.
Can diphenhydramine affect your heart?
09-24-2020 FDA Drug Safety Communication
The U.S. Food and Drug Administration (FDA) is warning that taking higher than recommended doses of the common over-the-counter (OTC) allergy medicine diphenhydramine (Benadryl) can lead to serious heart problems, seizures, coma, or even death.
What is the maximum amount of diphenhydramine you can take?
Maximum dosage
For adults and children over 12 years of age, the maximum is 300 mg each day. For children ages 6 to 12 years, the maximum is 150 mg each day. For adults or children, Benadryl products such as the cream, gel, and spray shouldn’t be applied to the skin more than 4 times per day.
Why is Benadryl not recommended for over 65?
Wozniak: Be wary of medications such as Benadryl® (diphenhydramine) and Chlor-Trimeton® (chlorpheniramine). These are first-generation antihistamines available over the counter. They’re especially risky for older adults because they have a group of side effects known as “anticholinergic” effects.
What is the safest antihistamine for seniors?
Loratadine, cetrizine, and fexofenadine all have excellent safety records. Their cardiovascular safety has been demonstrated in drug-interaction studies, elevated-dose studies, and clinical trials. These three antihistamines have also been shown safe in special populations, including pediatric and elderly patients.