Save up -80% on Acetylcysteine

Note: this is a drug discount program, not an insurance plan.

RX BIN: 015558
Group ID: DDN6600
Card Holder ID: DDN6600

Pharmacists and Patients support.

2018 Price of Acetylcysteine

Acetylcysteine powder



* price without discount in nearest pharmacy. Price may vary.

Claim your free Acetylcysteine discount card

We offer free Acetylcysteine coupons and discounts that may help you save up to 80% off the retail price in your local pharmacy. Just print your coupon! It’s ready to use and never expire. Present your discount card in most local pharmacies to get a discount on Acetylcysteine every time. What are you waiting for? Claim your prescription drug card now!

Get your Prescription
It’s safe and free
Buy drugs in pharmacy
Save money each time

Acetylcysteine volume of distribution

About RX24Drugs

Discount Cards 16,000+

Clients Benefit 29%

Total savings $4,735,080

What is Acetylcysteine

Acetylcysteine (also known as N-acetylcysteine or N-acetyl-L-cysteine or NAC) is primarily used as a mucolytic agent and in the management of acetaminophen poisoning. It is a derivative of cysteine with an acetyl group attached to the amino group of cysteine. NAC is essentially a prodrug that is converted to cysteine (in the intestine by the enzyme aminoacylase 1) and absorbed in the intestine into the blood stream. Cysteine is a key constituent to glutathione and hence administration of acetylcysteine replenishes glutathione stores. Acetylcysteine can also be used as a general antioxidant which can help mitigate symptoms for a variety of diseases exacerbated by reactive oxygen species (ROS). For instance, acetylcysteine is commonly used in individuals with renal impairment to prevent the precipitation of acute renal failure. Acetylcysteine has been shown to have efficacy in treating mild to moderate traumatic brain injury including ischemic brain injury, particularly in reducing neuronal losses, and also reducing cognitive and neurological symptoms when administered promptly after injury. N-acetylcysteine is now widely used in the treatment of HIV, and it has reported efficacy in chronic obstructive pulmonary disease and contrast-induced nephropathy. Acetylcysteine is also being successfully used to treat a variety of neuropsychiatric and neurodegenerative disorders including cocaine, cannabis, and smoking addictions, Alzheimer’s and Parkinson’s diseases, autism, compulsive and grooming disorders, schizophrenia, depression, and bipolar disorder. Recent data also shows that N-acetylcysteine inhibits muscle fatigue and can be used to enhance performance in endurance events and in exercise and endurance training.

Acetylcysteine mechanism of action

Acetylcysteine protects against acetaminophen overdose-induced hepatotoxicity by maintaining or restoring hepatic concentrations of glutathione. It does this by producing the glutathione precursor L-cysteine. Glutathione is required to inactivate an intermediate metabolite (N-acetyl-p-benzoquinoneimine or NAPQI) of acetaminophen that is thought to be hepatotoxic. In acetaminophen overdose cases, excessive quantities of this metabolite are formed because the primary metabolic (glucuronide and sulfate conjugation) pathways become saturated. Acetylcysteine may act by reducing the metabolite to the parent compound and/or by providing sulfhydryl for conjugation of the metabolite. Experimental evidence also suggests that a sulfhydryl-containing compound such as acetylcysteine may also directly inactivate the metabolite. The mechanisms of action for acetylcysteine well-known mucolytic effects are different. In particular, when inhaled, acetylcysteine (and its metabolic byproduct cysteine) exerts its mucolytic action through its free sulfhydryl group, which reduces the disulfide bonds in the mucus matrix and lowers mucus viscosity. This action increases with increasing pH and is most significant at pH 7 to 9. The mucolytic action of acetylcysteine is not affected by the presence of DNA. Acetylcysteine is also an antioxidant and reduces oxidative stress. Acetylcysteine serves as a prodrug to L-cysteine which is a precursor to the biologic antioxidant, glutathione and hence administration of acetylcysteine replenishes glutathione stores. L-cysteine also serves as a precursor to cystine which in turn serves as a substrate for the cystine-glutamate antiporter on astrocytes hence increasing glutamate release into the extracellular space. This glutamate in turn acts on mGluR2/3 receptors, and at higher doses of acetylcysteine, mGluR5. Glutathione also modulates the NMDA receptor by acting at the redox site. These effects on glutamate and NMDA signaling appear to explain some of the positive neuropsychotropic effects associated with NAC. Acetylcysteine also possesses some anti-inflammatory effects possibly via inhibiting NF- B through redox activation of the nuclear factor kappa kinases thereby modulating cytokine synthesis.

Dosage forms of Acetylcysteine

Inhalantoral; respiratory (inhalation)100 mg/mL
Inhalantoral; respiratory (inhalation)200 mg/mL
Inhalantrespiratory (inhalation)100 mg/mL
Prescription Generics


International Brands



(2R)-2-acetylamino-3-Sulfanylpropanoic acid (R)-2-acetylamino-3-Mercaptopropanoic acid


Cumberland Pharmaceuticals Inc.

CAS number






Affected organisms

Humans and other mammals

Indication of Acetylcysteine

Acetylcysteine is used mainly as a mucolytic and in the management of paracetamol (acetaminophen) overdose.

Toxicity of Acetylcysteine

Single intravenous doses of acetylcysteine at 1000 mg/kg in mice, 2445 mg/kg in rats, 1500 mg/kg in guinea pigs, 1200 mg/kg in rabbits and 500 mg/kg in dogs were lethal. Symptoms of acute toxicity were ataxia, hypoactivity, labored respiration, cyanosis, loss of righting reflex and convulsions.

RX24 Drugs Disclaimer: before buying a Acetylcysteine on prescription, consult your healthcare provider. Content on this page is provided for informational purposes only. Any use of this information is at your own risk.

Get lower price on Acetylcysteine now!