Nyquil and Benadryl drug interactions - from FDA reports


Summary

Drug interactions are reported among people who take Nyquil and Benadryl together. This review analyzes the effectiveness and drug interactions between Nyquil and Benadryl. It is created by eHealthMe based on reports of 83 people who take the same drugs from FDA, and is updated regularly.

What to expect?

If you take Nyquil and Benadryl, find out what symptoms you could have in 1 year or longer.

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Nyquil

Nyquil has active ingredients of acetaminophen / dextromethorphan / doxylamine / pseudoephedrine. (latest outcomes from Nyquil 528 users)

Benadryl

Benadryl has active ingredients of diphenhydramine hydrochloride. It is often used in allergies. (latest outcomes from Benadryl 44,713 users)

On Feb, 06, 2017

83 people who take Nyquil, Benadryl are studied.


Number of reports submitted per year:

Nyquil and Benadryl drug interactions.

Most common drug interactions over time *:

< 1 month:
  • pneumonia
  • abdominal discomfort
  • acute myocardial infarction
  • alanine aminotransferase increased
  • arthritis
  • back disorder
  • constipation
  • diarrhoea
  • disorientation
  • disturbance in attention
6 - 12 months:
  • pre-existing condition improved
  • therapeutic response unexpected
  • urinary tract infection
  • weight decreased
  • back injury
  • carpal tunnel syndrome
  • hyponatraemia
  • nausea
2 - 5 years:
  • back injury
  • carpal tunnel syndrome
  • nausea
  • pre-existing condition improved
  • therapeutic response unexpected
  • weight decreased
not specified:
  • completed suicide
  • abdominal pain
  • insomnia
  • overdose
  • serotonin syndrome
  • vomiting
  • asthenia
  • cardiac failure
  • nasopharyngitis
  • drug ineffective

Most common drug interactions by gender *:

female:
  • completed suicide
  • abdominal pain
  • asthenia
  • insomnia
  • overdose
  • cerebrovascular accident
  • deep vein thrombosis
  • nasopharyngitis
  • pain
  • pulmonary embolism
male:
  • pneumonia
  • serotonin syndrome
  • cardiac failure
  • completed suicide
  • accidental poisoning
  • abdominal pain
  • blood glucose decreased
  • bronchitis
  • delirium
  • drug screen positive

Most common drug interactions by age *:

10-19:
  • completed suicide
  • abdominal pain
  • intentional self-injury
  • overdose
  • vomiting
20-29:
  • abdominal pain
  • blood glucose decreased
  • delirium
  • electrocardiogram qt prolonged
  • hypertension
  • muscle spasms
  • rebound effect
  • sinus tachycardia
  • urinary incontinence
  • anomalous pulmonary venous connection
30-39:
  • completed suicide
  • abdominal pain
  • transaminases increased
  • vomiting
  • bronchitis
  • death
  • dyspnoea
  • intentional overdose
  • sputum increased
  • tinnitus
40-49:
  • activities of daily living impaired
  • adverse drug reaction
  • arthritis
  • back disorder
  • cerebrovascular accident
  • hypertension
  • insomnia
  • middle insomnia
  • migraine
  • sinusitis
50-59:
  • pneumonia
  • bruxism
  • discomfort
  • drug screen positive
  • fatigue
  • influenza
  • insomnia
  • nasopharyngitis
  • pyrexia
  • rash
60+:
  • serotonin syndrome
  • cardiac failure
  • overdose
  • accidental poisoning
  • hyponatraemia
  • somnolence
  • urinary tract infection
  • death
  • exposure to toxic agent
  • staphylococcal sepsis

* Approximation only. Some reports may have incomplete information.

How to use the study: print a copy of the study and bring it to your health teams to ensure drug risks and benefits are fully discussed and understood.

Do you take Nyquil and Benadryl?

Interactions between Nyquil and drugs from A to Z

a b c d e f g h i j k l m n o p q r s t u v w x y z

Interactions between Benadryl and drugs from A to Z

a b c d e f g h i j k l m n o p q r s t u v w x y z

On eHealthMe, Nyquil (acetaminophen / dextromethorphan / doxylamine / pseudoephedrine) is often used to treat nasopharyngitis. Benadryl (diphenhydramine hydrochloride) is often used to treat hypersensitivity. Find out below the conditions the drugs are used for and how effective they are.

What is the drug used for and how effecitve is it:

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