Mucinex Syncope Side Effect Reports


The following Mucinex Syncope side effect reports were submitted by healthcare professionals and consumers.

This information will help you understand how side effects, such as Syncope, can occur, and what you can do about them.

A side effect could appear soon after you start Mucinex or it might take time to develop.


Syncope, Unresponsive To Stimuli, Blood Pressure Decreased, International Normalised Ratio Increased, Cold Sweat, Hypersensitivity, Dizziness

This Syncope side effect was reported by a consumer or non-health professional from US. A 85-year-old patient (weight:NA) experienced the following symptoms/conditions: cough. The patient was prescribed Mucinex Fast Max Dm Max (dosage: NA), which was started on Nov 12, 2013. Concurrently used drugs:
  • Coumadin
When starting to take Mucinex Fast Max Dm Max the consumer reported the following symptoms:
  • Syncope
  • Unresponsive To Stimuli
  • Blood Pressure Decreased
  • International Normalised Ratio Increased
  • Cold Sweat
  • Hypersensitivity
  • Dizziness
The patient was hospitalized. These side effects may potentially be related to Mucinex Fast Max Dm Max.
Syncope, Dizziness

This Syncope Mucinex Dm side effect was reported by a consumer or non-health professional from US on Aug 19, 2013. A Female , 79 years of age, was diagnosed with and was treated with Mucinex Dm. The patient presented the following health conditions:
  • Syncope
  • Dizziness
. Mucinex Dm dosage: NA. Additional drugs used at the same time: NA.
Syncope, Head Injury

This is a Mucinex D side effect report of a 52-year-old patient (weight:NA) from US, suffering from the following symptoms/conditions: NA, who was treated with Mucinex D (dosage:NA, start time: NS), combined with: NA., and developed a serious reaction and a Syncope side effect. The patient presented with:
  • Syncope
  • Head Injury
which developed after the beginning of treatment. This side effect report can indicate a possible existence of increased vulnerability to Mucinex D treatment in patients suffering from NA, resulting in Syncope.
Syncope, Heart Rate Increased, Tremor, Cough, Vertigo, Blood Pressure Decreased

A 46-year-old patient (weight: NA) from US with the following symptoms: cough,hypertension,pain,myalgia started Mucinex Dm Maximum Strength treatment (dosage: Took 1 Tablet On 11-mar-2013 At 2 Pm, 1 Tablet At 8:30/9 Am On 12-mar-2013) on Mar 11, 2013. Soon after starting Mucinex Dm Maximum Strength treatment, the consumer experienced several side effects, including:
  • Syncope
  • Heart Rate Increased
  • Tremor
  • Cough
  • Vertigo
  • Blood Pressure Decreased
. Concurrently used drugs:
  • Lisinopril (Takes Regularly)
  • Ibuprofen
  • Ibuprofen
The patient was hospitalized. This finding indicates that some patients can be more vulnerable to developing Mucinex Dm Maximum Strength side effects, such as Syncope.
Syncope, Pruritus, Hyperhidrosis, Balance Disorder, Urticaria, Vomiting, Rash, Nausea, Dizziness

A patient from US was prescribed and started Mucinex Dm (guaifenesin) on Dec 19, 2012. Patient felt the following Mucinex side effects: syncope, pruritus, hyperhidrosis, balance disorder, urticaria, vomiting, rash, nausea, dizziness Additional patient health information: male , 41 years of age, The consumer reported the following symptoms: was diagnosed with and. Mucinex Dm (guaifenesin) dosage: Took One Tablet Only. Concurrently used drugs:
  • Mucinex Dm (dextromethorphan Hydrobromide)
Syncope, Loss Of Consciousness, Cold Sweat, Contusion, Asthenia, Dizziness, Nausea, Somnolence

This report suggests a potential Mucinex Dm Syncope side effect(s) that can have serious consequences. A 73-year-old patient from US (weight:NA) was diagnosed with the following health condition(s): cough,bronchial secretion retention and used Mucinex Dm (dosage: NA) starting Sep 05, 2012. Soon after starting Mucinex Dm the patient began experiencing various side effects, including:
  • Syncope
  • Loss Of Consciousness
  • Cold Sweat
  • Contusion
  • Asthenia
  • Dizziness
  • Nausea
  • Somnolence
Drugs used concurrently:NA. Although Mucinex Dm demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Syncope, may still occur.
Dehydration, Syncope, Road Traffic Accident

An adverse event was reported by a consumer or non-health professional on Jan 02, 2013 by a male taking Mucinex Dm (dosage: As Per Product Labeling) . Location: US , 51 years of age, patient began experiencing various side effects, including: Directly after treatment started, patient experienced the unwanted or unexpected Mucinex side effects: dehydration, syncope, road traffic accident. Additional medications/treatments: The patient was hospitalized.
Anxiety, Dehydration, Migraine, Hypersensitivity, Haemoptysis, Syncope, Depressed Level Of Consciousness, Muscle Tightness, Speech Disorder

This Syncope problem was reported by a consumer or non-health professional from US. A 36-year-old female patient (weight: NA) was diagnosed with the following medical condition(s): nasal congestion.On NS a consumer started treatment with Mucinex Dm (dosage: Took 1 Tablet On 04-dec-2012 Or 05-dec-2012 Around 9am). The following drugs/medications were being taken at the same time: NA. When commencing Mucinex Dm, the patient experienced the following unwanted symptoms /side effects:
  • Anxiety
  • Dehydration
  • Migraine
  • Hypersensitivity
  • Haemoptysis
  • Syncope
  • Depressed Level Of Consciousness
  • Muscle Tightness
  • Speech Disorder
Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as Syncope, may become evident only after a product is in use by the general population.
Syncope, Dizziness

This is a Mucinex Dm side effect report of a 68-year-old female patient (weight: NA) from UNITED STATES. The patient developed the following symptoms/conditions: NA and was treated with Mucinex Dm (dosage: NA) starting Apr 18, 2012. Concurrently used drugs: NA. Soon after that, the consumer experienced the following of symptoms:
  • Syncope
  • Dizziness
This opens a possibility that Mucinex Dm could cause Syncope and that some female patients may be more susceptible.
Syncope, Laceration, Rib Fracture

This Syncope side effect was reported by a consumer or non-health professional from UNITED STATES on Feb 17, 2012. A female patient from UNITED STATES , 52 years of age, was treated with Mucinex D. Directly after treatment started, patient experienced the unwanted or unexpected Mucinex side effects: syncope, laceration, rib fracture. Mucinex D dosage: NA. These side effects may potentially be related to Mucinex D.
Syncope, Dizziness

This Syncope side effect was reported by a consumer or non-health professional from UNITED STATES. A 79-year-old patient (weight:NA) experienced the following symptoms/conditions: paranasal sinus hypersecretion,paronychia. The patient was prescribed Mucinex Dm (dosage: Patient Took The Product On 19-aug-2011 And 20-aug-2011), which was started on NS. Concurrently used drugs:
  • Cephalexin
When starting to take Mucinex Dm the consumer reported the following symptoms:
  • Syncope
  • Dizziness
These side effects may potentially be related to Mucinex Dm.
Arrhythmia, Feeling Abnormal, Fatigue, Back Pain, Renal Disorder, Syncope, Heart Rate Increased, Dyspnoea, Mobility Decreased

This Syncope Mucinex D side effect was reported by a physician from UNITED STATES on Mar 24, 2011. A Female , weighting 178.6 lb, was treated with Mucinex D. The patient presented the following health conditions:
  • Arrhythmia
  • Feeling Abnormal
  • Fatigue
  • Back Pain
  • Renal Disorder
  • Syncope
  • Heart Rate Increased
  • Dyspnoea
  • Mobility Decreased
. Mucinex D dosage: Patient Started Dosing On 12-feb-2011. Additional drugs used at the same time: NA.
Dizziness, Syncope, Head Injury, Cardiac Arrest

This is a Mucinex side effect report of a female patient (weight:NA) from UNITED STATES, suffering from the following symptoms/conditions: nasopharyngitis, who was treated with Mucinex (dosage:Unk, start time: NS), combined with:
  • Robitussin (Unk)
, and developed a serious reaction and a Syncope side effect. The patient presented with:
  • Dizziness
  • Syncope
  • Head Injury
  • Cardiac Arrest
which developed after the beginning of treatment. The patient was hospitalized. This side effect report can indicate a possible existence of increased vulnerability to Mucinex treatment in female patients suffering from nasopharyngitis, resulting in Syncope.
Confusional State, Convulsion, Disorientation, Feeling Abnormal, Haemorrhage, Head Injury, Heart Rate Decreased, Hypotension, Syncope

A 51-year-old patient (weight: NA) from UNITED STATES with the following symptoms: cough,nasopharyngitis started Mucinex Dm treatment (dosage: Patient Took Two Tablets At Approximately Midnight.) on NS. Soon after starting Mucinex Dm treatment, the consumer experienced several side effects, including:
  • Confusional State
  • Convulsion
  • Disorientation
  • Feeling Abnormal
  • Haemorrhage
  • Head Injury
  • Heart Rate Decreased
  • Hypotension
  • Syncope
. Concurrently used drugs: NA.The patient was hospitalized. This finding indicates that some patients can be more vulnerable to developing Mucinex Dm side effects, such as Syncope.
Syncope

A female patient from UNITED STATES was prescribed and started Mucinex Dm on Aug 17, 2009. After Mucinex was administered, patient encountered several Mucinex side effects: syncope Additional patient health information: Female , 45 years of age, weighting 109.1 lb, The consumer reported the following symptoms: . Mucinex Dm dosage: Taking 3 Doses Of 2 Tablets.. Concurrently used drugs: NA.
Blood Electrolytes Decreased, Syncope

This report suggests a potential Mucinex Dm Syncope side effect(s) that can have serious consequences. A 70-year-old patient from UNITED STATES (weight:NA) was diagnosed with the following health condition(s): NA and used Mucinex Dm (dosage: NA) starting Feb 01, 2009. Soon after starting Mucinex Dm the patient began experiencing various side effects, including:
  • Blood Electrolytes Decreased
  • Syncope
Drugs used concurrently:NA. The patient was hospitalized. Although Mucinex Dm demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Syncope, may still occur.
Confusional State, Hypervigilance, Loss Of Consciousness, Mydriasis, Respiratory Rate Increased, Restlessness, Syncope

An adverse event was reported by a consumer or non-health professional on Dec 01, 2008 by a Female taking Mucinex Dm (dosage: 1 Tablet Once Po) was diagnosed with and. Location: UNITED STATES , 48 years of age, weighting 125.0 lb, patient began experiencing various side effects, including: Patient felt the following Mucinex side effects: confusional state, hypervigilance, loss of consciousness, mydriasis, respiratory rate increased, restlessness, syncope. Additional medications/treatments:
Fall, Syncope

This Syncope problem was reported by a consumer or non-health professional from UNITED STATES. A 54-year-old patient (weight: NA) was diagnosed with the following medical condition(s): NA.On NS a consumer started treatment with Mucinex (dosage: NA). The following drugs/medications were being taken at the same time: NA. When commencing Mucinex, the patient experienced the following unwanted symptoms /side effects:
  • Fall
  • Syncope
Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as Syncope, may become evident only after a product is in use by the general population.
Aortic Dilatation, Asthenia, Dizziness, Electrocardiogram Poor R-wave Progression, Heart Rate Decreased, Nervousness, Oral Intake Reduced, Syncope, Vomiting

This is a Mucinex side effect report of a 55-year-old female patient (weight: NA) from UNITED STATES. The patient developed the following symptoms/conditions: increased upper airway secretion and was treated with Mucinex (dosage: 1 Tabl, Bid, Oral) starting Jan 22, 2008. Concurrently used drugs:
  • Aspirin
  • Flexeril
Soon after that, the consumer experienced the following of symptoms:
  • Aortic Dilatation
  • Asthenia
  • Dizziness
  • Electrocardiogram Poor R-wave Progression
  • Heart Rate Decreased
  • Nervousness
  • Oral Intake Reduced
  • Syncope
  • Vomiting
The patient was hospitalized. This opens a possibility that Mucinex could cause Syncope and that some female patients may be more susceptible.
Asthenia, Blood Pressure Decreased, Dizziness, Heart Rate Decreased, Nervousness, Syncope, Vomiting

This Syncope side effect was reported by a consumer or non-health professional from UNITED STATES on Mar 18, 2008. A female patient from UNITED STATES , 55 years of age, was diagnosed with and was treated with Mucinex. Patient felt the following Mucinex side effects: asthenia, blood pressure decreased, dizziness, heart rate decreased, nervousness, syncope, vomiting. Mucinex dosage: 1tabl, Bid, Oral.
Multiple prescriptions taken:
  • Aspirin
  • Flexeril
  • Tylox
  • Welchol
  • Estratest
  • Nexium
  • Toprol-xl
  • Amaryl
The patient was hospitalized. These side effects may potentially be related to Mucinex.

DISCLAIMER: ALL DATA PROVIDED AS-IS, refer to terms of use for additional information.

Mucinex Syncope Causes and Reviews


Fainting is a temporary loss of consciousness. If you're about to faint, you'll feel dizzy, lightheaded, or nauseous. Your field of vision may "white out" or "black out." Your skin may be cold and clammy. You lose muscle control at the same time, and may fall down.

Fainting usually happens when your blood pressure drops suddenly, causing a decrease in blood flow to your brain. It is more common in older people. Some causes of fainting include

  • Heat or dehydration
  • Emotional distress
  • Standing up too quickly
  • Certain medicines
  • Drop in blood sugar
  • Heart problems

When someone faints, make sure that the airway is clear and check for breathing. The person should stay lying down for 10-15 minutes. Most people recover completely. Fainting is usually nothing to worry about, but it can sometimes be a sign of a serious problem. If you faint, it's important to see your health care provider and find out why it happened.


Mucinex Syncope Reviews

Tue, 28 Feb 2012

I bought Mucinex 12 hour expectorant with 600mg of guaniffesein. I thought this was suppose to thin out the mucus and help expel the phlegm. Instead I experienced a terrific headache, sinus pressure in my ears , and it dried up all my mucus (like using an antihistamine) that I never had any productive cough or expelling of phlegm! I also drank herbal teas with lemon and honey and homemade vegetable soup during the day and sipped on tea all day long. I was so dried up and headachy that I had to use steam from a boiling pot to help open and moisten sinus airways. After a while I decided to eat a lot of real food to help absorb the potency of this formula. NEVER NEVER take this! I returned it to Walgreen's and got my money back. Instead of helping my cold, Mucinex made my whole day un bearable!

Sat, 17 Mar 2012

Do not take Mucinex if you are allergic to sulfa drugs. My son is highly allergic to sulfa and has had several reactions while taking Mucinex over the last 6 months. We just found out that it was the Mucinex and not any other exposure that was causing his hives/rash/itching/swelling/etc. This last reaction was worse than any other reaction he has had. After the Mucinex was out of his system he began to get better. Now we are warning all our friends and family - Dont take this if you have a sulfa allergy!

Tue, 06 Mar 2012

Had a very bad cold with an unrelenting cough. Took Mucinex DM on pharmacists recommendation. First night was great, slept didn't cough as much. continued with medication.
Second day -Started feeling unusually sleepy/ cold /weird headache loose bowels nausea odd feelings Put it down to the cold getting worse. Second day read box for side effects. NONE I was having. Day three -Now horrible cramping diarrhea, nausea and dehydration though drinking clear fluids non stop. becoming irrational and hypersensitive, face felt slightly numb. Finally checked the internet and found this.Soon as stopped, much better. Still have a cold, but I don't care. Lemon, honey and Irish whiskey working much better for me.

Sat, 27 Oct 2012

I have fibromylgia cannot see any reason to take musinex for it.

Fri, 27 Apr 2012

Mucinex is good but I agree, I used it and got some diziness and fatigue.

Wed, 01 Feb 2012

my urine was also a sickening sweet smell after taking musinex. i had horrible nausea when i took it then the next day the urine smell.

Mon, 16 Apr 2012

great stuff

Thu, 29 Mar 2012

My lungs are failing and I believe its from 3 doses of Muscinex dm. I had Bronchitis and took Muscinex on advice from my Dr. A week before that I had quit smoking, so now that's all anyone pays attention to, but while I smoked I NEVER had any lung problems. I quit because I got tired of the smell around me, not because of any physical problems. I have never had any excess mucus, in fact I have never coughed.
Twice now I have been unable to draw in breath and have had to be hospitalized. One of my nurses agreed that the drug may have glazed my lungs, and that's exactly how they feel now. My voice is raspy and I lose it completely every few days, usually from trying to have a conversation.
I am seeing a pulmonary specialist who has me on Spiriva until tests are finished but neither that, Albuterol or Flovent have any effect on how I feel. I am extremely short of breath when talking on the phone or even walking to the car. I have gained 20 lbs from my inactivity and that doesn't help.
Muscinex has changed my life drastically, and may be what ends it. That stuff needs to be pulled.

Fri, 25 Jan 2013

Thanks everyone for your input! I had sinus infection and was put on antibiotics and Mucinex DM. Had blurry vision and was very dizzy. Thought it was the antibiotics. PCP changed me to a different antibiotics not realizing it was the Mucinex. My last dose of Mucinex was Sunday and my eyes are still dilated.....blurry vision. Mucinex made me so dizzy, I couldn't stand up. I weigh 98 lbs and so the side effects are lasting a lot longer. So glad I found all your comments.....this helps!

Thu, 29 Mar 2012

My husband was taking Mucinex routinely for COPD to thin the heavy mucus, but after about 3 weeks, he began having serious mucusy coughing fits, then had emotional bouts. After reading this site, I had him stop and the problems cleared in about 15 hours.

DISCLAIMER: ALL DATA PROVIDED AS-IS, refer to terms of use for additional information.

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Top Mucinex Side Effects

Dizziness (322)
Blood Pressure Increased (225)
Headache (181)
Epistaxis (169)
Nausea (163)
Feeling Abnormal (158)
Heart Rate Increased (127)
Diarrhoea (124)
Hallucination (120)
Insomnia (114)
Dyspnoea (109)
Anxiety (108)
Vomiting (84)
Hypertension (73)
Confusional State (69)
Loss Of Consciousness (63)
Haemoptysis (62)
Tremor (55)
Asthenia (53)
Somnolence (46)
Palpitations (43)
Nervousness (41)
Off Label Use (38)
Hyperhidrosis (35)
Disorientation (35)
Urticaria (34)
Fatigue (34)
Abdominal Pain Upper (32)
Accidental Overdose (30)
Overdose (30)
Chest Pain (29)
Convulsion (28)
Cough (28)
Malaise (25)
Feeling Jittery (24)
Syncope (24)
Hypoaesthesia (24)
Lip Swelling (23)
Lethargy (23)
Psychomotor Hyperactivity (22)
Hypersensitivity (22)
Pharyngeal Oedema (22)
Faeces Discoloured (22)
Agitation (22)
Rash (21)
Chest Discomfort (21)
Unevaluable Event (21)
Vision Blurred (21)
Mucosal Haemorrhage (20)
Dysphagia (20)

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