Review: taking Pseudoephedrine hydrochloride and Nyquil together


Drug interactions are reported among people who take Pseudoephedrine hydrochloride and Nyquil together. This review analyzes the effectiveness and drug interactions between Pseudoephedrine hydrochloride and Nyquil. It is created by eHealthMe based on reports of 7 people who take the same drugs from FDA and social media, and is updated regularly.

You are not alone

Join a support group for people who take Pseudoephedrine hydrochloride and Nyquil >>>

Personalized health information

On eHealthMe you can find out what patients like me (same gender, age) reported their drugs and conditions on FDA and social media since 1977. Our tools are free and anonymous. 86 million people have used us. 300+ peer-reviewed medical journals have referenced our original studies. Start now >>>

Pseudoephedrine Hydrochloride

Pseudoephedrine hydrochloride has active ingredients of pseudoephedrine hydrochloride. It is often used in nasal congestion. (latest outcomes from Pseudoephedrine hydrochloride 725 users)


Nyquil has active ingredients of acetaminophen / dextromethorphan / doxylamine / pseudoephedrine. It is often used in nasopharyngitis. (latest outcomes from Nyquil 108 users)

On Aug, 20, 2016

7 people who take Pseudoephedrine Hydrochloride, Nyquil are studied.

Number of reports submitted per year:

Pseudoephedrine hydrochloride and Nyquil drug interactions.

Most common drug interactions by gender *:

  • congenital anomaly
  • anal atresia
  • anal fistula
  • atrial septal defect
  • dermatitis contact
  • feeding disorder neonatal
  • patent ductus arteriosus
  • poor weight gain neonatal
  • vaginal fistula
  • ventricular septal defect
  • vomiting
  • abdominal pain
  • abnormal dreams
  • anaemia
  • aspartate aminotransferase increased
  • blood alkaline phosphatase increased
  • chest pain
  • cholecystitis chronic
  • cholelithiasis
  • decreased appetite

Most common drug interactions by age *:

  • anomalous pulmonary venous connection
  • congenital anomaly
  • maternal exposure during pregnancy
  • pharyngeal oedema
  • rash
  • throat tightness
  • pulmonary embolism
  • ejaculation failure
  • erection increased
  • penile pain
  • skin discolouration
  • vomiting
  • abdominal pain
  • anaemia
  • aspartate aminotransferase increased
  • blood alkaline phosphatase increased
  • chest pain
  • cholecystitis chronic
  • cholelithiasis
  • decreased appetite
  • diarrhoea

* 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 Pseudoephedrine hydrochloride and Nyquil?

Can you answer these questions?

More questions for: Pseudoephedrine hydrochloride, Nyquil

You may be interested in these reviews

More reviews for: Pseudoephedrine hydrochloride, Nyquil

On eHealthMe, Pseudoephedrine hydrochloride (pseudoephedrine hydrochloride) is often used to treat nasal congestion. Nyquil (acetaminophen / dextromethorphan / doxylamine / pseudoephedrine) is often used to treat nasopharyngitis. 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:

NOTE: The study is based on active ingredients and brand name. Other drugs that have the same active ingredients (e.g. generic drugs) are NOT considered.

WARNING: Please DO NOT STOP MEDICATIONS without first consulting a physician since doing so could be hazardous to your health.

DISCLAIMER: All material available on is for informational purposes only, and is not a substitute for medical advice, diagnosis, or treatment provided by a qualified healthcare provider. All information is observation-only, and has not been supported by scientific studies or clinical trials unless otherwise stated. Different individuals may respond to medication in different ways. Every effort has been made to ensure that all information is accurate, up-to-date, and complete, but no guarantee is made to that effect. The use of the eHealthMe site and its content is at your own risk.

You may report adverse side effects to the FDA at or 1-800-FDA-1088 (1-800-332-1088).

If you use this eHealthMe study on publication, please acknowledge it with a citation: study title, URL, accessed date.