Compare Sudafed vs. Dimetapp Cold and Allergy

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

Sudafed
(Pseudoephedrine)

Dimetapp Cold And Allergy
(Phenylephrine / Brompheniramine)

Clears your sinuses. Sudafed (Pseudoephedrine) relieves stuffy nose, but it could keep you up at night. Don't forget your photo ID or you won't be able to buy it in the drugstore.Relieves congestion and allergy symptoms for kids. Dimetapp Cold And Allergy (Phenylephrine / Brompheniramine) is good for multiple nasal symptoms, but it can make you really drowsy.
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Reviews & ratings
Button Group. All currently active
Button Group. All currently active
5.273672055427252Sudafed
Reviews for Sudafed (Pseudoephedrine)
82%
of people say Sudafed (Pseudoephedrine) is worth it
45%
say it works well
6%
say it's a big hassle

Not enough reviews for this drug. Help someone out, leave a review!

Side effects
SudafedDimetapp Cold and Allergy

We haven’t found good data for Sudafed side effects.

FDA side effect reports for Sudafed »

We haven’t found good data for Dimetapp Cold and Allergy side effects.

FDA side effect reports for Dimetapp Cold and Allergy »
How it works
SudafedDimetapp Cold and Allergy
Sudafed (Pseudoephedrine) is a decongestant. It narrows blood vessels and reduces swelling in your nasal passages to make breathing easier.Dimetapp Cold And Allergy (Phenylephrine / Brompheniramine) is a combination medicine that relieves allergy and cold symptoms. Brompheniramine (an antihistamine) prevents allergy symptoms like runny nose, sneezing, and itchy eyes or skin. Phenylephrine (a decongestant) clears your sinuses.
Type of medication
SudafedDimetapp Cold and Allergy
DecongestantPrescription or OTC
DecongestantAntihistamine
1st generation
Over-the-counter
Available as
SudafedDimetapp Cold and Allergy
  • Pill
  • Extended release
  • Liquid
  • Chewable tablet
  • Liquid
Used for (click to learn more)
SudafedDimetapp Cold and Allergy
Risk factors for serious side effects
SudafedDimetapp Cold and Allergy
  • History of high blood pressure
  • History of heart problems
  • Age 65 years or older
  • History of seizures
  • Women of childbearing age
Detailed Sudafed (Pseudoephedrine) risks & warnings »
  • Taking with alcohol
  • Taking with other medicines that make you less alert
  • Women of childbearing age
  • History of high blood pressure
  • Taking MAO inhibitors
  • Age 65 years or older
  • Glaucoma
  • Benign prostatic hypertrophy (BPH)
Detailed Dimetapp Cold And Allergy (Phenylephrine / Brompheniramine) risks & warnings »
Pregnancy category
SudafedDimetapp Cold and Allergy
NFDA pregnancy category (Unknown)

The FDA hasn’t classified this medicine’s effects on unborn babies. Talk with your doctor about this medicine if you’re pregnant or planning on it.

See the FDA package insert
NFDA pregnancy category (Unknown)

The FDA hasn’t classified this medicine’s effects on unborn babies. Talk with your doctor about this medicine if you’re pregnant or planning on it.

See the FDA package insert
Alcohol
No specific alcohol-related info.No specific alcohol-related info.
Food
No specific food-related info.No specific food-related info.
Kidneys and liver
No specific kidneys and liver-related info.No specific kidneys and liver-related info.
Sex
No specific sex-related info.No specific sex-related info.
Sleep
  • It can affect the quality of your sleep, so you can't take it too close to going to bed.
  • Brompheniramine (the antihistamine) can cause dizziness, drowsiness, dry eyes/mouth, and constipation.
Weight
No specific weight-related info.No specific weight-related info.
Upsides and benefits
SudafedDimetapp Cold and Allergy
  • One of the best over-the-counter options to clear stuffy nose and help you breathe better.
  • Clears nasal congestion better than other decongestants like phenylephrine.
  • Can be helpful in relieving congestion-related headaches and pressure in your ears.
  • Available in regular and extended release forms.
  • Dimetapp Cold And Allergy (Phenylephrine / Brompheniramine) is a combination medicine with a decongestant and an antihistamine that's helpful in treating nasal symptoms related to cold and allergy.
  • Brompheniramine (the antihistamine) is useful for itchy eyes, runny nose, or constant sneezing.
  • Phenylephrine (the decongestant) is good for relieving congestion.
Downsides and risks
SudafedDimetapp Cold and Allergy
  • Pseudoephedrine (a decongestant) can make your heart race or make you feel anxious and restless.
  • It can affect the quality of your sleep, so you can't take it too close to going to bed.
  • Can raise blood pressure so check with your doctor before using it if you have high blood pressure or other heart conditions.
  • Sudafed (Pseudoephedrine) isn't as effective after using it for more than 4 days straight.
  • Need to show a photo ID to buy it in the drugstore and there is a limit on how much you can buy each visit.
  • If you don't really need both of the medications in this combination, you'd be taking extra medicine and might have extra side effects for no reason.
  • Brompheniramine (the antihistamine) can cause dizziness, drowsiness, dry eyes/mouth, and constipation.
  • Phenylephrine (the decongestant) doesn't last as long as other oral decongestants like pseudoephedrine, but can cause jitteriness.
  • The two medications in this medicine can somewhat work against each other, with one making you sleepy and the other making you jittery.
Tips from our pharmacists for people taking the medication
SudafedDimetapp Cold and Allergy
  • Starts working in 30 minutes.
  • You need to show an ID to buy Sudafed (Pseudoephedrine) in the drugstore because it contains pseudoephedrine.
  • Follow age-specific dosing instructions on how much to take. Don't take more than recommended on the package.
  • Don't take Sudafed (Pseudoephedrine) too close to bedtime since it can keep you awake.
  • Can cause an irregular or fast heartbeat, and can raise your blood pressure.
  • Talk to your doctor if your symptoms don't get better in 1 week.
  • Only use the provided dosage cup to measure the medicine. Don't use a spoon.
  • Follow the age-specific dosing instructions on how much to take. Don't take more than what's recommended on the package.
  • Talk to a doctor if the symptoms don't get better in 1 week.
Learn more
More about SudafedSide effectsReviews & ratingsAlternativesFDA package insert
More about Dimetapp Cold and AllergySide effectsReviews & ratingsAlternativesFDA package insert