Photo of the drug Nac (generic name(s): Acetylcysteine).

Nac Acetylcysteine

ACETYLCYSTEINE (a se teel SIS teen) is a drug that loosens and thins mucus in the lungs. It is used to make breathing easier in patients with bronchitis, cystic fibrosis, emphysema, tuberculosis, or other lung problems.




Nac prices near Ashburn, VA

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ACETYLCYSTEINE 20% VIAL

$12.80

Qty:30

ACETYLCYSTEINE 20% VIAL

$13.80

Qty:30

ACETYLCYSTEINE 20% VIAL

$13.80

Qty:30

ACETYLCYSTEINE 20% VIAL

$13.80

Qty:30

ACETYLCYSTEINE 20% VIAL

$15.57

Qty:30

ACETYLCYSTEINE 20% VIAL

$15.57

Qty:30
Est Cash Price: $17.39
ACETYLCYSTEINE 20% VIAL

$16.09

Qty:30
Est Cash Price: $17.39
ACETYLCYSTEINE 20% VIAL

$16.09

Qty:30
Est Cash Price: $17.39
ACETYLCYSTEINE 20% VIAL

$16.09

Qty:30
Est Cash Price: $17.39
ACETYLCYSTEINE 20% VIAL

$16.09

Qty:30
Est Cash Price: $17.39
ACETYLCYSTEINE 20% VIAL

$16.09

Qty:30
Est Cash Price: $17.39
ACETYLCYSTEINE 20% VIAL

$16.09

Qty:30
Est Cash Price: $28.79
ACETYLCYSTEINE 20% VIAL

$25.01

Qty:30
Est Cash Price: $28.79
ACETYLCYSTEINE 20% VIAL

$25.01

Qty:30
Est Cash Price: $28.79
ACETYLCYSTEINE 20% VIAL

$25.01

Qty:30
Est Cash Price: $50.89
ACETYLCYSTEINE 20% VIAL

$32.40

Qty:30

What is Nac?

ACETYLCYSTEINE (a se teel SIS teen) is a drug that loosens and thins mucus in the lungs. It is used to make breathing easier in patients with bronchitis, cystic fibrosis, emphysema, tuberculosis, or other lung problems.

How to take Nac

This medicine is usually inhaled into the lungs using a nebulizer. In a hospital or clinic setting, a health care provider may put this medicine directly into the lungs through a trachea tube or give by mouth in an emergency. Follow the directions on the prescription label. For inhalation through a nebulizer, dilute with sterile saline or water as directed. You will be taught how to use your nebulizer. Use diluted medicine within 1 hour of mixing. Take your medicine at regular intervals. Do not take your medicine more often than directed.

Talk to your pediatrician regarding the use of this medicine in children. Special care may be needed.

Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once.
NOTE: This medicine is only for you. Do not share this medicine with others.

Tell your doctor or health care professional if your symptoms do not improve or if you get worse. If you are using a nebulizer at home, make sure you understand how to use it properly.

Drink water as directed. This will help to loosen and thin mucus.

Inhalations of this medicine can leave a sticky film in your mouth and on your face. Rinse with water after each treatment.

What if I miss a dose of Nac?

If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.

Storing Nac

Keep out of the reach of children.

Store unopened bottles at room temperature between 15 and 30 degrees C (59 and 86 degrees F). If only some of a bottle is used, store the remaining undiluted medicine in a refrigerator. Use open bottles within 96 hours (4 days). Use diluted medicine within 1 hour. Throw away any unused medicine after the expiration date.

NOTE: This sheet is a summary. It may not cover all possible information. If you have questions about this medicine, talk to your doctor, pharmacist, or health care provider.

Side Effects of Nac

Side effects that you should report to your doctor or health care professional as soon as possible:

  • Allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
  • Breathing problems
  • Chest tightness, pain
  • Clamminess
  • Coughing up blood
  • Fever

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):
  • Changes in taste
  • Drowsiness
  • Mouth sores
  • Nausea, vomiting
  • Runny nose

This list may not describe all possible side effects. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Interactions with Nac

Interactions are not expected.

This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.




Prescription prices may vary from pharmacy to pharmacy and are subject to change. The pricing estimates given are based on the most recent information available and may change based on when you actually fill your prescription at the pharmacy. The day supply is based upon the average dispensing patterns or the specific drug and strength. The Program, as well as the prices and the list of covered drugs, can be modified at any time without notice.




More Ways to Save on Nac

Buy More, Less Often

If you need to take prescription medication such as Nac over an extended period, buying a larger quantity could save you time and money. Many drugs, including Nac work out cheaper per pill or dose when purchased in volume. Speak to your doctor about increasing the your prescription and you could pay less for drugs and need fewer trips to the pharmacist.

Compare Pharmacy Prices Online

Drug prices are not regulated, so the price Nac of medication may vary significantly between your local pharmacies. Online pharmacy comparison shopping is the simplest way to quickly discover which retailer has the lowest prices for your prescriptions.

Enter the name of your prescription, for example Nac, into the search box, add the zip code and click to browse prices and coupon offers. When you have found the cheapest price, print or save the coupon and and take it in to your chosen pharmacy. Comparing prices can save you up to 75 percent on your prescriptions.

Register for a Patient Assistance Program

Patient assistance programs offered by drug manufacturers can help you save money on your prescriptions. Pfizer has such a program, offering discounts to eligible patients who are prescribed Nac. Patients prescribed expensive or branded medication may qualify for discounts through this kind of program.

Click here to find out more about patient assistance programs

Explore Generic Drug Options

Nac and other branded drugs often have a generic equivalent on the market at a significantly lower price. Generics account for around 8 out of 10 prescriptions filled in the US and are identical their brand name counterparts in quality, safety, strength, dosage form, route of administration, performance characteristics and intended use. Talk to your pharmacist or doctor about safe generic alternatives to your branded prescription.

Check Your Medicare Part D Coverage

Seniors with Medicare Part D may be entitled to discounts on Nac and other prescriptions through their policy. The list of drugs covered varies from plan to plan, so check your provider’s website for more information.

Click here to find out more about RxSpark and Medicare Part D.

Explore Other Treatment & Therapy Options

Medication plays a vital role in treating a huge number of conditions, but there may be other therapies, lifestyle changes or surgical options open to you. If you have concerns about prescription costs, or are considering a different approach to your therapy, speak to your doctor to explore alternatives to medication.