Nac (Acetylcysteine)

Acetylcysteine, the active ingredient in Nac, is a mucolytic presented as an oral formulation for systemic use. It reduces the viscosity of respiratory secretions, serves as an antidote for acetaminophen toxicity, and helps protect kidney function during contrast imaging.

GNH USA supplies Nac as a licensed, GDP‑compliant international pharmaceutical product to hospitals, pharmacies and clinics worldwide, adhering to EU quality standards and providing regulatory support for cross‑border distribution.

Acetylcysteine is employed across several therapeutic pathways related to mucus management and toxicant neutralisation.

- Chronic obstructive pulmonary disease (COPD): improves airway clearance by thinning mucus, facilitating expectoration. - Acute acetaminophen (paracetamol) overdose: replenishes glutathione stores to detoxify the reactive metabolite N‑acetyl‑p‑benzoquinone imine. - Contrast‑enhanced radiographic procedures: reduces risk of contrast‑induced nephropathy through antioxidant activity.

Acetylcysteine may cause a range of adverse reactions, most of which are mild and transient.

Common Side Effects: - Nausea: mild stomach upset. - Vomiting: occasional episodes. - Diarrhea: loose stools. - Metallic taste: transient alteration of taste.

Serious or Rare Side Effects: - Anaphylactoid reaction: rash, wheezing, hypotension. - Severe bronchospasm: worsening respiratory distress.

When using acetylcysteine, consider the following safety measures.

- Assess renal function: adjust use in severe renal impairment. - Monitor liver enzymes: especially when used for acetaminophen overdose. - Caution in asthma: may provoke bronchospasm in susceptible individuals. - Avoid concurrent use with nitroglycerin: risk of hypotension. - Pregnancy: limited data, use only if benefit outweighs risk. - Store at ambient temperature: keep in original container, protect from moisture and light.

Acetylcysteine can interact with several medicines; awareness of the interaction level helps manage risk.

Major Interactions (Avoid): - Nitroprusside: may cause excessive vasodilation and hypotension. - Activated charcoal: reduces acetylcysteine absorption if given concurrently.

Moderate Interactions (Monitor Closely): - Anticoagulants (e.g., warfarin): possible alteration of INR. - Inhaled bronchodilators: monitor for additive bronchospasm. - High‑dose vitamin C: may affect antioxidant balance.