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Generic Name: Mucomyst (acetylcysteine)

Mucomyst Reviews

For Expectoration "I started using acetylcysteine last May. For the first time in 20 years, my lungs were clear. My bronchitis disappeared. My FEV1 increased by 25 percent. My sinus condition cleared up, and the headaches were gone. I do not understand why this medicine is not used routinely for COPD and other respiratory ailments."


For Expectoration "I had severe bronchitis from a sinus infection while traveling. It was causing me severe pulmonary distress. I was taking my rescue inhaler every 2 hours. The doctor in Hungary prescribed acetylcysteine to help clear the lungs. My lungs cleared in days. What a difference! The only side effect I had was dripping from my nose. It liquefied the mucus there too. Usually back home in the US, they prescribe steroids (prednisone) and albuterol nebulizer treatments for weeks while the coughing clears. No more for me."


For Expectoration "As a healthcare professional having given Mucomyst to patients over more than 30 years of career, I've yet to observe any benefit from the aerosolization of this med. I don't want to minimize the previous comments. Used during a bronchoscopy in liquid wash, it will dissolve thick mucus quickly and effectively, but the benefit of aerosolization has not been demonstrated or established in any controlled study. Also, after more than 24 hours of use, the lung tissue will begin to 'weep.' This is a very caustic substance to the lung. Too often, it's ordered for a specific problem area of the lung. As the laws of nature take effect in that gas follows the path of least resistance, Mucomyst is delivered to all areas of the lung with minimal effect on the problem."


For Expectoration "I use it occasionally. About once a week to help break up mucus from my COPD that Albuterol won't clear up."


For Expectoration "My mother was on a ventilator and was giving mucomyst and shortly after taking it blood started coming up out of her mouth"

More about Mucomyst (acetylcysteine)

  • Check interactions
  • Compare alternatives
  • Side effects
  • Dosage information
  • During pregnancy
  • Drug class: mucolytics
  • Breastfeeding

Patient resources

  • Mucomyst advanced reading

Other brands

NAC, N-A-C Sustain, Acetadote, Acys-5, Cetylev

Professional resources

  • Mucomyst prescribing information
  • Acetylcysteine, Acetylcysteine Lysine(Local, Systemic) (AHFS Monograph)

Other brands

Acetadote, Cetylev

Related treatment guides

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  • Expectoration
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