mucomyst
Mucomyst (Acetylcysteine) is an antidote used to treat Amyloidosis, Bronchiectasis, Bronchitis, Cystic Fibrosis.
Acetylcysteine · by Apothecon
Key facts
- Active ingredient
- Acetylcysteine
- Drug class
- Antidote
- Form
- Solution
- Strength
- Acetylcysteine 10% **Federal Register Determination That Product was not Discontinued or Withdrawn for Safety or Effectiveness reasons** · Acetylcysteine 20% **Federal Register Determination That Product was not Discontinued or Withdrawn for Safety or Effectiveness reasons**
- Type
- Prescription (Rx)
- Brand or generic
- Brand-name
- May treat
- amyloidosis, bronchiectasis, bronchitis
- Manufacturer
- Apothecon
- What the pharmacy pays
- ~$1.32 per ml — not your price
- FDA application
- NDA013601
- Availability
- Discontinued (per FDA)
Drug class
- Antidote
- Antidote for Acetaminophen Overdose
- Mucolytic
May treat (source: NIH RxClass)
Dosage forms
Solution
The forms currently marketed in the U.S., per the FDA National Drug Code Directory.
Ways to save
Ask for the generic
Same active ingredient, far cheaper. Is there a generic? →
Request a 90-day supply
Bulk fills usually lower the per-dose price vs monthly refills.
Use copay cards
Manufacturer copay cards & patient-assistance programs — especially for brand drugs.
Compare alternatives
A same-class option may cost less. See alternatives →
Frequently asked questions
- What does Mucomyst treat?
- Mucomyst (Acetylcysteine) may be used to treat amyloidosis, bronchiectasis, bronchitis, cystic fibrosis, pneumonia, poisoning, based on NIH RxClass drug-classification data (conditions a drug may treat — not a verbatim copy of the FDA-approved label). This is general reference, not medical advice.
- How much does Mucomyst cost?
- Nobody can tell you what you will pay — your price is set by your insurer's formulary, your deductible and the pharmacy's markup, and none of those are published. What IS published is what the pharmacy paid to acquire it: about $1.32 per ml, per the CMS NADAC survey. Treat that as the floor, not the quote — ask the pharmacist for the cash price as well as your copay, because for cheap generics the cash price often wins.
- Is there a coupon or discount for Mucomyst?
- pharmaranks is an independent ratings site, not a pharmacy — we don't issue coupons or sell Mucomyst. To pay less, ask your prescriber or pharmacist whether a generic equivalent exists, check the manufacturer's copay/savings card and patient-assistance program, and compare a pharmacy discount card against your insurance copay. Prices vary by pharmacy, insurance, and location, so always confirm at the counter. This is general reference, not medical or financial advice.
- Who makes Mucomyst?
- Mucomyst is marketed by Apothecon. You can see Apothecon's full profile, rating, and other products on pharmaranks.
- Is Mucomyst a brand-name or generic drug?
- Mucomyst is a brand-name product with the active ingredient Acetylcysteine.
- Is Mucomyst available over the counter?
- No. Mucomyst is a prescription (Rx) medication in the US — you need a prescription from a licensed clinician (in person or via telehealth); it isn't sold over the counter. For some conditions there are OTC alternatives — ask your pharmacist.
- What forms does Mucomyst come in?
- Mucomyst is currently marketed as solution, per the FDA's National Drug Code Directory.
- What class of drug is Mucomyst?
- Mucomyst is classified as antidote, antidote for acetaminophen overdose, mucolytic, per the FDA's Established Pharmacologic Class.
- Is Mucomyst FDA-registered?
- Mucomyst is on record with the U.S. FDA under application number NDA013601. You can verify this on its official FDA label.
Information is sourced from public FDA regulatory data. Provided for general reference only — not medical advice. Always consult a licensed professional and the current prescribing information.
What people report to the FDA about ACETYLCYSTEINE
The FDA Adverse Event Reporting System (FAERS) collects reports from patients and clinicians. It holds 10,903 reports naming ACETYLCYSTEINE — the active ingredient in Mucomyst, and the FDA flagged 89% of those reports as serious. The effects reported most often — leaving out reports about overdose, misuse or the condition being treated, which dominate the raw list for common medicines:
- dyspnoea867 reports
- pneumonia708 reports
- pyrexia554 reports
- fatigue546 reports
- nausea507 reports
- acute kidney injury423 reports
- diarrhoea413 reports
- vomiting388 reports
Read these as a signal, not a rate. A report does not mean ACETYLCYSTEINE caused the effect — anyone can file one, and many describe people taking several medicines for several conditions. Crucially there is no denominator: FAERS does not record how many people took the drug, so these counts cannot be turned into “X% of patients” — a bigger number often just means a more widely used or more talked-about drug. Duplicates exist, and publicity drives reporting. For what is actually established, read the FDA label.
Source: openFDA drug/event (FAERS), retrieved September 25, 2026.
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