Dimetapp Nighttime Cold & Congestion

Dimetapp Nighttime Cold & Congestion treats symptoms of a cold or hay fever. Can make you sleepy. Do not drive until you know how this medication affects you.

Dimetapp Nighttime Cold & Congestion Overview


Dimetapp Nighttime Cold & Congestion is used to treat symptoms of a cold or hay fever, including nasal congestion, cough, runny nose, itchy and water eyes, and sneezing. It is a single product containing 2 ingredients: phenylephrine and diphenhydramine. Phenylephrine belongs to a group of drugs called nasal decongestants. Nasal decongestants work by narrowing the blood vessels and reducing the swelling inside your nasal passage, which allow you to breathe easier. Diphenhydramine belongs to a group of drugs called Histamine H1 Antagonists (antihistamine). It works by blocking the action of histamine and allergy symptoms, and is also known to cause sleepiness and drowsiness. 

This medication comes in a oral (by mouth) liquid, and is usually taken every 4 to 6 hours with or without food. 

Common side effects of Dimetapp Nighttime Cold & Congestion include fast heartbeat and shakiness/tremors. Dimetapp Nighttime Cold & Congestion can also cause drowsiness. Do not drive or operate heavy machinery until you know how Dimetapp Nighttime Cold & Congestion affects you.


Patient Ratings for Dimetapp Nighttime Cold & Congestion

How was your experience with Dimetapp Nighttime Cold & Congestion?

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What are you taking Dimetapp Nighttime Cold & Congestion for?

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  • Other
  • Anxiety Disorders
  • Fissure In Ano
  • Glaucoma, Open-angle
  • Hemorrhoids
  • Hypotension
  • Motion Sickness
  • Nausea
  • Pruritus Ani
  • Rhinitis, Allergic, Perennial
  • Rhinitis, Vasomotor
  • Shock, Septic
  • Sleep Initiation And Maintenance Disorders
  • Tachycardia, Supraventricular
  • Urticaria

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  • A couple weeks
  • A month or so
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  • Two years or more

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Dimetapp Nighttime Cold & Congestion consists of multiple generic medications. The generic medications are listed below.


For more information on this medication choose from the list of selections below.


For more information on this medication choose from the list of selections below.

Dimetapp Nighttime Cold & Congestion Drug Class

Dimetapp Nighttime Cold & Congestion is part of the drug class: