Compare Benadryl vs. Nasonex

Head-to-head comparisons of medication uses, side effects, ratings, and more.

Benadryl (Diphenhydramine)

Prescription or OTC

Nasonex (Mometasone)

Prescription only
Treats allergy symptoms and helps you sleep.

Benadryl (Diphenhydramine) is great for allergies, but curl up on the couch after taking it and get ready for a nap.

4.1/ 5 average rating with 294 reviewsforBenadryl
Relieves allergy symptoms.

Nasonex (Mometasone) is a good first-choice treatment for stuffy and runny noses caused by allergies.

3.6/ 5 average rating with 675 reviewsforNasonex
Upsides
  • Benadryl (Diphenhydramine) is often better than other antihistamines at treating allergy symptoms and hives.
  • It can provide quick relief of allergy symptoms for both kids and adults.
  • It makes you sleepy, so it'll help if your allergies are bothering you at night.
  • The effects wear off in 4 to 6 hours, so side effects don't last that long.
  • It comes as a tablet, capsule, liquid, and quick dissolving tablet.
  • First-choice medication for treating runny and stuffy noses caused by allergies. It works by reducing inflammation in the nose.
  • Because it's used directly where the inflammation is happening, it has fewer side effects than oral steroids do and has a lower chance of causing withdrawal symptoms once the medication is stopped.
  • Can be used as needed to help control symptoms in people age 13 years or older.
  • Available as a generic, which is cheaper.
Downsides
  • Benadryl (Diphenhydramine) makes you more tired than Claritin, Allegra, or Zyrtec.
  • You shouldn't drive after taking Benadryl (Diphenhydramine) until you know how it affects you.
  • Talk to a pediatrician before giving Benadryl (Diphenhydramine) to a child.
  • It can increase the risk of falls, so elderly people shouldn't use Benadryl (Diphenhydramine).
  • Don't use Benadryl (Diphenhydramine) if you are breastfeeding.
  • Needs to be primed 10 times before it can be used, or re-primed if not used for more than 2 weeks.
  • Doesn't have a counter on it, so it can be hard to remember how many sprays are left (each bottle has 120 sprays).
  • Since the medicine in Nasonex (Mometasone) is a steroid, it can slow down your healing process if you've hurt your nose or had nose surgery.
Used for
Dosage forms
  • Pill
  • Oral solution
  • Cream, gel, or ointment
  • Nasal spray
Price
No pricing information available
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Reviews
294 reviews so far
86%
saidit'sworth it
59%
saiditworked well
8%
saidit'sa big hassle

Have you used Benadryl (Diphenhydramine)?

Leave a review
675 reviews so far
68%
saidit'sworth it
39%
saiditworked well
8%
saidit'sa big hassle

Have you used Nasonex (Mometasone)?

Leave a review
Side effects
The Benadryl (Diphenhydramine) FDA package insert doesn’t have numbers about how common side effects are.
1possible side effects
  • Nosebleed
    13%
See more detailed side effects
Risks and risk factors
  • Overdose
    • Using other drugs with the same ingredients
  • Increased side effects
    • Age 65 years or older
  • Driving impairment
    • Taking with alcohol
    • Taking other medicines that make you less alert
  • Hyperactivity
    • Children age 6 years and younger
  • Trouble urinating
    • Enlarged prostate
    • History of bladder problems
  • Vision changes
    • Glaucoma
  • Breastfeeding
    • Nursing mothers
See more detailed risks and warnings
  • Thrush in the nose and throat
    • Long-term use
  • Changes in the nasal septum
    • Long-term use
  • Decreased wound healing
    • Surgery or trauma to the nose or sinuses
  • Glaucoma and cataracts
    • Long-term use
  • Reduced immune system
    • Exposure to immunizable diseases (chickenpox and measles)
    • Exposure to tuberculosis
  • Decrease in growth in children and teenagers
    • Long-term use
    • Taking more than recommended dose
See more detailed risks and warnings