Mucinex Accidental Overdose Side Effect Reports


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

This information will help you understand how side effects, such as Accidental Overdose, 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.


Dysarthria, Accidental Overdose, Somnolence, Confusional State

This Accidental Overdose side effect was reported by a consumer or non-health professional from US. A 79-year-old female patient (weight:NA) experienced the following symptoms/conditions: NA. The patient was prescribed Mucinex Dm Maximum Strength (dosage: NA), which was started on Oct 19, 2013. Concurrently used drugs:
  • Ativan
  • Exelon Patch
  • Potassium Chloride
When starting to take Mucinex Dm Maximum Strength the consumer reported the following symptoms:
  • Dysarthria
  • Accidental Overdose
  • Somnolence
  • Confusional State
These side effects may potentially be related to Mucinex Dm Maximum Strength.
Blood Pressure Increased, Dizziness, Accidental Overdose

This Accidental Overdose Mucinex Dm Maximum Strength side effect was reported by a consumer or non-health professional from US on Apr 17, 2013. A Female , 51 years of age, was treated with Mucinex Dm Maximum Strength. The patient presented the following health conditions:
  • Blood Pressure Increased
  • Dizziness
  • Accidental Overdose
. Mucinex Dm Maximum Strength dosage: Took 2 Tablets On 02-apr-2013.. Additional drugs used at the same time:
  • Insulin
Loss Of Consciousness, Nausea, Accidental Overdose

This is a Mucinex Fast Max Adult Congestion + Cough side effect report of a 68-year-old patient (weight:NA) from US, suffering from the following symptoms/conditions: cough, who was treated with Mucinex Fast Max Adult Congestion + Cough (dosage:Patient Took 2 Capfuls Of The Liquid, start time: NS), combined with: NA., and developed a serious reaction and a Accidental Overdose side effect. The patient presented with:
  • Loss Of Consciousness
  • Nausea
  • Accidental Overdose
which developed after the beginning of treatment. This side effect report can indicate a possible existence of increased vulnerability to Mucinex Fast Max Adult Congestion + Cough treatment in patients suffering from cough, resulting in Accidental Overdose.
Feeling Abnormal, Hallucination, Accidental Overdose

A 48-year-old female patient (weight: NA) from US with the following symptoms: NA started Mucinex D treatment (dosage: Took 11 Tablets At Once) on Jan 09, 2013. Soon after starting Mucinex D treatment, the consumer experienced several side effects, including:
  • Feeling Abnormal
  • Hallucination
  • Accidental Overdose
. Concurrently used drugs: NA. This finding indicates that some patients can be more vulnerable to developing Mucinex D side effects, such as Accidental Overdose.
Memory Impairment, Cough, Accidental Overdose

A female patient from US was prescribed and started Mucinex Dm on Jan 28, 2013. Patient felt the following Mucinex side effects: memory impairment, cough, accidental overdose Additional patient health information: Female , 64 years of age, The consumer reported the following symptoms: . Mucinex Dm dosage: Patient Took 11 Tablets Of The Product. Concurrently used drugs: NA.
Swelling Face, Oedema Peripheral, Throat Tightness, Accidental Overdose

This report suggests a potential Mucinex Accidental Overdose side effect(s) that can have serious consequences. A 62-year-old female patient from UNITED STATES (weight:NA) was diagnosed with the following health condition(s): NA and used Mucinex (dosage: Ended Up Taking 3 Possibly 4 Tablets On Thurday 19-apr-2012 Within 12 Hours.) starting Mar 01, 2012. Soon after starting Mucinex the patient began experiencing various side effects, including:
  • Swelling Face
  • Oedema Peripheral
  • Throat Tightness
  • Accidental Overdose
Drugs used concurrently:NA. Although Mucinex demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Accidental Overdose, may still occur.
Dysarthria, Accidental Overdose, Nausea, Confusional State, Intentional Self-injury, Sleep Disorder, Dizziness

An adverse event was reported by a consumer or non-health professional on Dec 02, 2011 by a Female taking Mucinex Dm (dosage: Took 14 To 21 Tablets In One Dose) . Location: UNITED STATES , 23 years of age, patient began experiencing various side effects, including: Directly after treatment started, patient experienced the unwanted or unexpected Mucinex side effects: dysarthria, accidental overdose, nausea, confusional state, intentional self-injury, sleep disorder, dizziness. Additional medications/treatments: The patient was hospitalized.
Anger, Speech Disorder, Tremor, Insomnia, Mood Swings, Psychomotor Hyperactivity, Accidental Overdose, Confusional State

This Accidental Overdose problem was reported by a consumer or non-health professional from UNITED STATES. A 75-year-old patient (weight: NA) was diagnosed with the following medical condition(s): respiratory tract congestion,blood pressure.On Nov 23, 2011 a consumer started treatment with Mucinex Dm (dosage: Took 24 Tablets In 5 To 6 Days). The following drugs/medications were being taken at the same time:
  • Atenolol
  • Simvastatin
  • Finasteride
  • Advair Diskus 100/50
When commencing Mucinex Dm, the patient experienced the following unwanted symptoms /side effects:
  • Anger
  • Speech Disorder
  • Tremor
  • Insomnia
  • Mood Swings
  • Psychomotor Hyperactivity
  • Accidental Overdose
  • Confusional State
The patient was hospitalized. Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as Accidental Overdose, may become evident only after a product is in use by the general population.
Tremor, Insomnia, Anger, Mood Swings, Accidental Overdose, Psychomotor Hyperactivity, Confusional State, Speech Disorder

This is a Mucinex Dm side effect report of a 75-year-old patient (weight: NA) from UNITED STATES. The patient developed the following symptoms/conditions: NA and was treated with Mucinex Dm (dosage: Took 24 Tablets In 5 To 6 Days) starting Nov 23, 2011. Concurrently used drugs: NA. Soon after that, the consumer experienced the following of symptoms:
  • Tremor
  • Insomnia
  • Anger
  • Mood Swings
  • Accidental Overdose
  • Psychomotor Hyperactivity
  • Confusional State
  • Speech Disorder
The patient was hospitalized. This opens a possibility that Mucinex Dm could cause Accidental Overdose and that some patients may be more susceptible.
Accidental Overdose, Sleep Disorder, Intentional Self-injury, Nausea

This Accidental Overdose side effect was reported by a consumer or non-health professional from UNITED STATES on Nov 30, 2011. A female patient from UNITED STATES , 23 years of age, was treated with Mucinex Dm. Directly after treatment started, patient experienced the unwanted or unexpected Mucinex side effects: accidental overdose, sleep disorder, intentional self-injury, nausea. Mucinex Dm dosage: Took 14 To 21 Tablets In One Dose. These side effects may potentially be related to Mucinex Dm.
Accidental Overdose, Hypertension, Headache

This Accidental Overdose side effect was reported by a consumer or non-health professional from UNITED STATES. A 47-year-old female patient (weight:NA) experienced the following symptoms/conditions: NA. The patient was prescribed Mucinex Dm (dosage: NA), which was started on NS. Concurrently used drugs:
  • Hydrochlorthiazide
When starting to take Mucinex Dm the consumer reported the following symptoms:
  • Accidental Overdose
  • Hypertension
  • Headache
These side effects may potentially be related to Mucinex Dm.
Vomiting, Disorientation, Nausea, Accidental Overdose, Hypotension, Cold Sweat, Loss Of Consciousness, Dehydration, Diarrhoea

This Accidental Overdose Mucinex Dm side effect was reported by a consumer or non-health professional from UNITED STATES on Oct 27, 2011. A Female , 25 years of age, was treated with Mucinex Dm. The patient presented the following health conditions:
  • Vomiting
  • Disorientation
  • Nausea
  • Accidental Overdose
  • Hypotension
  • Cold Sweat
  • Loss Of Consciousness
  • Dehydration
  • Diarrhoea
. Mucinex Dm dosage: NA. Additional drugs used at the same time: NA.
Accidental Overdose, Disorientation, Loss Of Consciousness, Abdominal Pain Upper, Hypotension, Diarrhoea, Dehydration, Nausea

This is a Mucinex Dm side effect report of a 25-year-old female patient (weight:NA) from UNITED STATES, suffering from the following symptoms/conditions: NA, who was treated with Mucinex Dm (dosage:NA, start time: Oct 15, 2011), combined with: NA., and developed a serious reaction and a Accidental Overdose side effect. The patient presented with:
  • Accidental Overdose
  • Disorientation
  • Loss Of Consciousness
  • Abdominal Pain Upper
  • Hypotension
  • Diarrhoea
  • Dehydration
  • Nausea
which developed after the beginning of treatment. This side effect report can indicate a possible existence of increased vulnerability to Mucinex Dm treatment in female patients suffering from NA, resulting in Accidental Overdose.
Accidental Overdose, Hypertension, Headache

A 47-year-old female patient (weight: NA) from UNITED STATES with the following symptoms: NA started Mucinex Dm treatment (dosage: NA) on NS. Soon after starting Mucinex Dm treatment, the consumer experienced several side effects, including:
  • Accidental Overdose
  • Hypertension
  • Headache
. Concurrently used drugs:
  • Hydrochlorthiazide
This finding indicates that some patients can be more vulnerable to developing Mucinex Dm side effects, such as Accidental Overdose.
Convulsion, Diarrhoea, Hyperhidrosis, Accidental Overdose, Hypertension, Vomiting

A female patient from UNITED STATES was prescribed and started Mucinex on Jul 19, 2011. After Mucinex was administered, patient encountered several Mucinex side effects: convulsion, diarrhoea, hyperhidrosis, accidental overdose, hypertension, vomiting Additional patient health information: Female , 77 years of age, The consumer reported the following symptoms: . Mucinex dosage: NA. Concurrently used drugs:
  • Aspirin
  • Actonel
  • Diovan
The patient was hospitalized.
Accidental Overdose, Depressed Level Of Consciousness, Diarrhoea, Dizziness, Loss Of Consciousness, Nausea

This report suggests a potential Mucinex Accidental Overdose side effect(s) that can have serious consequences. A 60-year-old female patient from UNITED STATES (weight:NA) was diagnosed with the following health condition(s): NA and used Mucinex (dosage: Took Mcuinex For 7 Days) starting May 20, 2010. Soon after starting Mucinex the patient began experiencing various side effects, including:
  • Accidental Overdose
  • Depressed Level Of Consciousness
  • Diarrhoea
  • Dizziness
  • Loss Of Consciousness
  • Nausea
Drugs used concurrently:
  • Mucinex Dm (Took 4 Tablets Within 24 Hours)
  • Synthroid
Although Mucinex demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Accidental Overdose, may still occur.
Abnormal Dreams, Accidental Overdose, Dizziness, Fatigue, Hallucination, Visual

An adverse event was reported by a consumer or non-health professional on May 18, 2010 by a Female taking Mucinex Dm (dosage: Took Two Tablets In One Dose Instead Of One.) . Location: UNITED STATES , 34 years of age, patient began experiencing various side effects, including: Patient felt the following Mucinex side effects: abnormal dreams, accidental overdose, dizziness, fatigue, hallucination, visual. Additional medications/treatments:
Abnormal Dreams, Accidental Overdose, Fatigue, Hallucination, Visual

This Accidental Overdose problem was reported by a consumer or non-health professional from UNITED STATES. A 34-year-old female patient (weight: NA) was diagnosed with the following medical condition(s): NA.On Apr 29, 2010 a consumer started treatment with Mucinex Dm (dosage: Took Two Tablets In One Dose Instead Of One.). 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:
  • Abnormal Dreams
  • Accidental Overdose
  • Fatigue
  • Hallucination, Visual
Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as Accidental Overdose, may become evident only after a product is in use by the general population.
Accidental Overdose, Blood Pressure Increased, Epistaxis

This is a Mucinex side effect report of a 70-year-old female patient (weight: NA) from UNITED STATES. The patient developed the following symptoms/conditions: NA and was treated with Mucinex (dosage: Took 4 Teaspoons Of Product At Once) starting Apr 02, 2010. Concurrently used drugs: NA. Soon after that, the consumer experienced the following of symptoms:
  • Accidental Overdose
  • Blood Pressure Increased
  • Epistaxis
This opens a possibility that Mucinex could cause Accidental Overdose and that some female patients may be more susceptible.
Accidental Overdose, Blood Pressure Increased, Dizziness, Erythema, Hypoaesthesia, Hypoaesthesia Oral, Palpitations, Paraesthesia

This Accidental Overdose side effect was reported by a consumer or non-health professional from UNITED STATES on Mar 17, 2010. A female patient from UNITED STATES , 46 years of age, was treated with Mucinex Dm. Patient felt the following Mucinex side effects: accidental overdose, blood pressure increased, dizziness, erythema, hypoaesthesia, hypoaesthesia oral, palpitations, paraesthesia. Mucinex Dm dosage: NA.
Multiple prescriptions taken:
  • Buspar
  • Buspar
  • Lisinopril
  • Insulin
  • Trileptil (2 A Day)
These side effects may potentially be related to Mucinex Dm.

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

Mucinex Accidental Overdose Causes and Reviews


Medicines cure infectious diseases, prevent problems from chronic diseases, and ease pain. But medicines can also cause harmful reactions if not used correctly. Errors can happen in the hospital, at the doctor's office, at the pharmacy, or at home. You can help prevent errors by

  • Knowing your medicines. Keep a list of the names of your medicines, how much you take, and when you take them. Include over-the-counter medicines, vitamins, and supplements and herbs. Take this list to all your doctor visits.
  • Reading medicine labels and following the directions. Don't take medications prescribed for someone else.
  • Taking extra caution when giving medicines to children.
  • Asking questions. If you don't know the answers to these questions, ask your doctor or pharmacist.
    • Why am I taking this medicine?
    • What are the common problems to watch out for?
    • What should I do if they occur?
    • When should I stop this medicine?
    • Can I take this medicine with the other medicines on my list?

Centers for Disease Control and Prevention


Mucinex Accidental Overdose 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 (313)
Blood Pressure Increased (225)
Headache (181)
Epistaxis (168)
Nausea (155)
Feeling Abnormal (150)
Heart Rate Increased (123)
Diarrhoea (123)
Hallucination (119)
Dyspnoea (107)
Anxiety (105)
Insomnia (105)
Vomiting (84)
Hypertension (73)
Confusional State (68)
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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