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Review: taking Mucinex Dm and NyQuil together

Summary: drug interactions are reported among people who take Mucinex Dm and NyQuil together. This review analyzes the effectiveness and drug interactions between Mucinex Dm and NyQuil. It is created by eHealthMe based on reports of 15 people who take the same drugs from FDA and social media, and is updated regularly.

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. 66 million people have used us. 200+ peer-reviewed medical journals have referenced our original studies. Start now >>>


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What are the drugs

Mucinex dm has active ingredients of dextromethorphan hydrobromide; guaifenesin. It is often used in cough. (latest outcomes from 632 Mucinex dm users)

Nyquil has active ingredients of acetaminophen; dextromethorphan; doxylamine; pseudoephedrine. It is often used in the flu. (latest outcomes from 1,145 Nyquil users)

On May, 12, 2015: 15 people who take Mucinex Dm, NyQuil are studied

Mucinex Dm, NyQuil outcomes

Drug combinations in study:
- Mucinex Dm (dextromethorphan hydrobromide; guaifenesin)
- NyQuil (acetaminophen; dextromethorphan; doxylamine; pseudoephedrine)

Drug effectiveness over time :

< 1 month1 - 6 months6 - 12 months1 - 2 years2 - 5 years5 - 10 years10+ yearsnot specified
Mucinex Dm is effective0.00%
(0 of 1 people)
NyQuil is effective0.00%
(0 of 1 people)

Drug effectiveness by gender :

Mucinex Dm is effective0.00%
(0 of 1 people)
NyQuil is effective0.00%
(0 of 1 people)

Drug effectiveness by age :

Mucinex Dm is effectiven/an/an/an/an/an/an/a0.00%
(0 of 1 people)
NyQuil is effectiven/an/an/an/an/an/an/a0.00%
(0 of 1 people)

Most common drug interactions over time * :

< 1 month1 - 6 months6 - 12 months1 - 2 years2 - 5 years5 - 10 years10+ yearsnot specified
Hyperhidrosisn/an/an/aCerebrovascular Accidentn/an/aCerebrovascular Accident
Eye RollingCardiac DisorderHyperhidrosis
Drug Administration ErrorMyocardial Infarction
Cerebrovascular AccidentCardiac Disorder
Musculoskeletal StiffnessRoad Traffic Accident
Tongue InjuryBlood Ethanol Increased
Tongue HaemorrhageMemory Impairment
DisorientationLoss Of Consciousness

Most common drug interactions by gender * :

Cerebrovascular AccidentCerebrovascular Accident
InjuryTongue Haemorrhage
Head InjurySnoring
Nervous System DisorderMusculoskeletal Stiffness
FallTongue Injury
DisorientationBlood Alcohol Increased
ContusionBlood Ethanol Increased
Loss Of ConsciousnessRoad Traffic Accident
Limb InjuryAccident

Most common drug interactions by age * :

n/an/aBlood Ethanol IncreasedHaemorrhagic Stroken/aCerebrovascular AccidentCerebrovascular AccidentTransient Ischaemic Attack
Road Traffic AccidentInjuryMusculoskeletal StiffnessHead InjuryVasospasm
DepressionSnoringFallCerebrovascular Accident
Cerebrovascular AccidentTongue HaemorrhageLoss Of ConsciousnessBlood Pressure Increased
Cardiac DisorderTongue InjuryDisorientationArrhythmia Supraventricular
Eye RollingNervous System DisorderHeart Rate Irregular
InjuryMemory Impairment
Myocardial InfarctionMyocardial Infarction
Drug Administration ErrorHyperhidrosis

* 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.

Get connected: join our support group of Mucinex Dm and NyQuil on

Do you take Mucinex Dm and NyQuil?


You are not alone! Join a related support group:
- support group for people who take Mucinex Dm
- support group for people who take NyQuil

Recent conversations of related support groups:

Can you answer these questions (Ask a question):

More questions for: Mucinex Dm, NyQuil

You may be interested at these reviews (Write a review):

  • Constipation due to nyquil
    Very bad constipation. Had lower stomach pains for days
  • Thank god for my dog
    On May 1st I came home from work and had taken some Nyquil before bed. While I was sleeping(for 17hours) I had a massive stroke, which my dog sensed and saved my life by waking me up in time to call for help. I was life flighted to a different Hospital, I'm very honored to have such a wonderful pup! ...
  • Mucinex dm caused balance problems
    I bought Mucinex Dm to treat mild symptoms of sore throat and cough. I was following the instructions precisely of the time and the dosages needed. After two days in taking the medication I started to experience balance problems. Suddenly I would feel unsteady and dizzy, and had the feeling that I w ...

More reviews for: Mucinex Dm, NyQuil

Complete drug side effects:

On eHealthMe, Mucinex Dm (dextromethorphan hydrobromide; guaifenesin) is often used to treat cough. Nyquil (acetaminophen; dextromethorphan; doxylamine; pseudoephedrine) is often used to treat the flu. Find out below the conditions the drugs are used for, how effective they are, and any alternative drugs that you can use to treat those same conditions.

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

Other drugs that are used to treat the same conditions:

NOTE: The study is based on active ingredients. Other drugs that have the same active ingredients are also 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).

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