Mucinex Off Label Use Side Effect Reports


The following Mucinex Off Label Use side effect reports were submitted by healthcare professionals and consumers.

This information will help you understand how side effects, such as Off Label Use, 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.


Blood Pressure Increased, Off Label Use

This Off Label Use side effect was reported by a consumer or non-health professional from US. A 82-year-old patient (weight:NA) experienced the following symptoms/conditions: emphysema,influenza,pneumonia,increased upper airway secretion. The patient was prescribed Mucinex Dm (dosage: 2-4 Tablets In Every 24 Hours), which was started on NS. Concurrently used drugs: NA. When starting to take Mucinex Dm the consumer reported the following symptoms:
  • Blood Pressure Increased
  • Off Label Use
These side effects may potentially be related to Mucinex Dm.
Heart Rate Decreased, Intentional Overdose, Off Label Use, Blood Pressure Increased, Headache, Vomiting, Nausea

This Off Label Use Mucinex Fast-max Severe Congestion And Cough side effect was reported by a health professional from US on Jan 24, 2014. A Female , 77 years of age, was diagnosed with and was treated with Mucinex Fast-max Severe Congestion And Cough. The patient presented the following health conditions:
  • Heart Rate Decreased
  • Intentional Overdose
  • Off Label Use
  • Blood Pressure Increased
  • Headache
  • Vomiting
  • Nausea
. Mucinex Fast-max Severe Congestion And Cough dosage: Drank About Six Doses; Amount Used: 3/4 Of The Bottle. Additional drugs used at the same time: NA.
Restlessness, Insomnia, Off Label Use

This is a Mucinex Maximum Strength side effect report of a 44-year-old female patient (weight:NA) from US, suffering from the following symptoms/conditions: influenza, who was treated with Mucinex Maximum Strength (dosage:Patient Took Last Dose At 10:00 P.m. On 09-jan-2014., start time: Jan 08, 2014), combined with: NA., and developed a serious reaction and a Off Label Use side effect. The patient presented with:
  • Restlessness
  • Insomnia
  • Off Label Use
which developed after the beginning of treatment. This side effect report can indicate a possible existence of increased vulnerability to Mucinex Maximum Strength treatment in female patients suffering from influenza, resulting in Off Label Use.
Restlessness, Insomnia, Off Label Use

A 47-year-old patient (weight: NA) from US with the following symptoms: sinus disorder,influenza started Mucinex Maximum Strength treatment (dosage: Patient Took Last At 10:00 P.m. On 09-jan-2014.) on Jan 08, 2014. Soon after starting Mucinex Maximum Strength treatment, the consumer experienced several side effects, including:
  • Restlessness
  • Insomnia
  • Off Label Use
. Concurrently used drugs: NA. This finding indicates that some patients can be more vulnerable to developing Mucinex Maximum Strength side effects, such as Off Label Use.
Neuropathy Peripheral, Hypoaesthesia, Local Swelling, Swelling Face, Pruritus, Off Label Use

A female patient from US was prescribed and started Mucinex Maximum Strength on Nov 28, 2013. Patient felt the following Mucinex side effects: neuropathy peripheral, hypoaesthesia, local swelling, swelling face, pruritus, off label use Additional patient health information: Female , 93 years of age, The consumer reported the following symptoms: was diagnosed with and. Mucinex Maximum Strength dosage: NA. Concurrently used drugs:
  • Allegra-d
Fluid Retention, Oedema Peripheral, Off Label Use

This report suggests a potential Mucinex Maximum Strength Off Label Use side effect(s) that can have serious consequences. A 65-year-old female patient from US (weight:NA) was diagnosed with the following health condition(s): pneumonia and used Mucinex Maximum Strength (dosage: 1 Tablet Per Day) starting Nov 08, 2013. Soon after starting Mucinex Maximum Strength the patient began experiencing various side effects, including:
  • Fluid Retention
  • Oedema Peripheral
  • Off Label Use
Drugs used concurrently:NA. Although Mucinex Maximum Strength demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Off Label Use, may still occur.
Glaucoma, Gait Disturbance, Malaise, Off Label Use, Dizziness

An adverse event was reported by a consumer or non-health professional on Dec 04, 2013 by a Female taking Mucinex Dm Maximum Strength (dosage: NA) was diagnosed with and. Location: US , 76 years of age, patient began experiencing various side effects, including: Directly after treatment started, patient experienced the unwanted or unexpected Mucinex side effects: glaucoma, gait disturbance, malaise, off label use, dizziness. Additional medications/treatments:
Loss Of Consciousness, Contusion, Fall, Malaise, Nausea, Off Label Use

This Off Label Use problem was reported by a consumer or non-health professional from US. A 68-year-old female patient (weight: NA) was diagnosed with the following medical condition(s): chills,pyrexia.On Oct 07, 2013 a consumer started treatment with Mucinex Dm Maximum Strength (dosage: Last Took On 07-oct-2013). The following drugs/medications were being taken at the same time: NA. When commencing Mucinex Dm Maximum Strength, the patient experienced the following unwanted symptoms /side effects:
  • Loss Of Consciousness
  • Contusion
  • Fall
  • Malaise
  • Nausea
  • Off Label Use
Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as Off Label Use, may become evident only after a product is in use by the general population.
Viith Nerve Paralysis, Headache, Speech Disorder, Off Label Use

This is a Mucinex Fast Max Adult Cold + Sinus side effect report of a 42-year-old female patient (weight: NA) from US. The patient developed the following symptoms/conditions: multiple allergies and was treated with Mucinex Fast Max Adult Cold + Sinus (dosage: 2 Tablets Every 4 Hours.) starting Sep 03, 2013. Concurrently used drugs: NA. Soon after that, the consumer experienced the following of symptoms:
  • Viith Nerve Paralysis
  • Headache
  • Speech Disorder
  • Off Label Use
This opens a possibility that Mucinex Fast Max Adult Cold + Sinus could cause Off Label Use and that some female patients may be more susceptible.
Fluid Retention, Blood Pressure Increased, Off Label Use

This Off Label Use side effect was reported by a consumer or non-health professional from US on Aug 12, 2013. A female patient from US , 79 years of age, was diagnosed with and was treated with Mucinex. Directly after treatment started, patient experienced the unwanted or unexpected Mucinex side effects: fluid retention, blood pressure increased, off label use. Mucinex dosage: Last Used The Product On 23-jul-2013. These side effects may potentially be related to Mucinex.
Haemoptysis, Off Label Use

This Off Label Use side effect was reported by a consumer or non-health professional from US. A 82-year-old female patient (weight:NA) experienced the following symptoms/conditions: bronchiectasis. The patient was prescribed Mucinex (dosage: NA), which was started on NS. Concurrently used drugs:
  • Albuterol
  • Pulmicort
  • Calcium
  • Vitamin D
  • Aleve
  • Ibuprofen
When starting to take Mucinex the consumer reported the following symptoms:
  • Haemoptysis
  • Off Label Use
These side effects may potentially be related to Mucinex.
Epistaxis, Off Label Use

This Off Label Use Mucinex Maximum Strength side effect was reported by a consumer or non-health professional from US on May 10, 2013. A Female , 27 years of age, was diagnosed with and was treated with Mucinex Maximum Strength. The patient presented the following health conditions:
  • Epistaxis
  • Off Label Use
. Mucinex Maximum Strength dosage: Last Took On 29-apr-2013. Additional drugs used at the same time:
  • Xyzal (5mg Every Day)
Atrial Flutter, Off Label Use

This is a Mucinex Dm Maximum Strength side effect report of a 79-year-old female patient (weight:NA) from US, suffering from the following symptoms/conditions: sinusitis, who was treated with Mucinex Dm Maximum Strength (dosage:NA, start time: Apr 01, 2013), combined with:
  • Vitamins
  • Aleve (1 Pill As Needed)
, and developed a serious reaction and a Off Label Use side effect. The patient presented with:
  • Atrial Flutter
  • Off Label Use
which developed after the beginning of treatment. This side effect report can indicate a possible existence of increased vulnerability to Mucinex Dm Maximum Strength treatment in female patients suffering from sinusitis, resulting in Off Label Use.
Heart Rate Irregular, Sensation Of Heaviness, Tremor, Unevaluable Event, Off Label Use

A 52-year-old female patient (weight: NA) from US with the following symptoms: sinus congestion,sinus headache started Mucinex treatment (dosage: NA) on 201301. Soon after starting Mucinex treatment, the consumer experienced several side effects, including:
  • Heart Rate Irregular
  • Sensation Of Heaviness
  • Tremor
  • Unevaluable Event
  • Off Label Use
. Concurrently used drugs: NA. This finding indicates that some patients can be more vulnerable to developing Mucinex side effects, such as Off Label Use.
Off Label Use, No Adverse Event

A female patient from US was prescribed and started Mucinex on Apr 08, 2013. After Mucinex was administered, patient encountered several Mucinex side effects: off label use, no adverse event Additional patient health information: Female , 53 years of age, The consumer reported the following symptoms: was diagnosed with and. Mucinex dosage: Patient Took Product For Approximately 7 Years Till 25-mar-2013.. Concurrently used drugs: NA.
Off Label Use, No Adverse Event

This report suggests a potential Mucinex Off Label Use side effect(s) that can have serious consequences. A 57-year-old female patient from US (weight:NA) was diagnosed with the following health condition(s): ear discomfort and used Mucinex (dosage: NA) starting Apr 21, 2012. Soon after starting Mucinex the patient began experiencing various side effects, including:
  • Off Label Use
  • No Adverse Event
Drugs used concurrently:NA. Although Mucinex demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Off Label Use, may still occur.
Polyuria, Off Label Use

An adverse event was reported by a consumer or non-health professional on Dec 11, 2012 by a male taking Mucinex D (guaifenesin) (dosage: NA) was diagnosed with and. Location: US , 81 years of age, patient began experiencing various side effects, including: Patient felt the following Mucinex side effects: polyuria, off label use. Additional medications/treatments:
Blood Pressure Increased, Off Label Use

This Off Label Use problem was reported by a health professional from US. A 85-year-old patient (weight: NA) was diagnosed with the following medical condition(s): bronchitis.On NS a consumer started treatment with Mucinex (dosage: Taking Mucinex For A Bit More Than A Week). The following drugs/medications were being taken at the same time: NA. When commencing Mucinex, the patient experienced the following unwanted symptoms /side effects:
  • Blood Pressure Increased
  • Off Label Use
Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as Off Label Use, may become evident only after a product is in use by the general population.
Lip Swelling, Eye Swelling, Auricular Swelling, Eyelid Oedema, Pruritus, Rash, Hypersensitivity, Off Label Use

This is a Mucinex Fast-max Cold And Sinus side effect report of a patient (weight: NA) from US. The patient developed the following symptoms/conditions: nasal congestion and was treated with Mucinex Fast-max Cold And Sinus (dosage: NA) starting Sep 08, 2012. Concurrently used drugs: NA. Soon after that, the consumer experienced the following of symptoms:
  • Lip Swelling
  • Eye Swelling
  • Auricular Swelling
  • Eyelid Oedema
  • Pruritus
  • Rash
  • Hypersensitivity
  • Off Label Use
This opens a possibility that Mucinex Fast-max Cold And Sinus could cause Off Label Use and that some patients may be more susceptible.
Epistaxis, Constipation, Off Label Use

This Off Label Use side effect was reported by a consumer or non-health professional from US on Sep 24, 2012. A patient from US , 63 years of age, was diagnosed with and was treated with Mucinex Dm Maximum Strength. Patient felt the following Mucinex side effects: epistaxis, constipation, off label use. Mucinex Dm Maximum Strength dosage: NA.
Multiple prescriptions taken:
  • Nyquil
These side effects may potentially be related to Mucinex Dm Maximum Strength.

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

Mucinex Off Label Use Causes and Reviews


Normally, your cells grow and die in a controlled way. Cancer cells keep growing without control. Chemotherapy is drug therapy for cancer. It works by killing the cancer cells, stopping them from spreading, or slowing their growth. However, it can also harm healthy cells, which causes side effects.

You may have a lot of side effects, some, or none at all. It depends on the type and amount of chemotherapy you get and how your body reacts. Some common side effects are fatigue, nausea, vomiting, pain, and hair loss. There are ways to prevent or control some side effects. Talk with your health care provider about how to manage them. Healthy cells usually recover after chemotherapy is over, so most side effects gradually go away.

Your treatment plan will depend on the cancer type, the chemotherapy drugs used, the treatment goal, and how your body responds. Chemotherapy may be given alone or with other treatments. You may get treatment every day, every week, or every month. You may have breaks between treatments so that your body has a chance to build new healthy cells. You might take the drugs by mouth, in a shot, as a cream, or intravenously (by IV).

NIH: National Cancer Institute


Mucinex Off Label Use 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 (326)
Blood Pressure Increased (226)
Headache (181)
Epistaxis (169)
Nausea (164)
Feeling Abnormal (159)
Heart Rate Increased (127)
Diarrhoea (124)
Hallucination (121)
Insomnia (115)
Dyspnoea (110)
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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