Nacfil
Nacfil is a effervescent tablet made by Fourrts India Labs that contains Acetylcysteine 600 mg. Acetylcysteine is a mucus thinner: thins thick phlegm in chest conditions; in hospitals it treats paracetamol overdose.
| Ingredient (salt) | Amount |
|---|---|
| Acetylcysteine (N-acetylcysteine) | 600 mg |
What it is used for
Thins thick phlegm in chest conditions; in hospitals it treats paracetamol overdose.
How it works
N-acetylcysteine breaks the bonds in thick mucus so it can be coughed up; in hospital it is the antidote to paracetamol overdose.
How to take it
Effervescent tablets or sachets dissolved in water, usually 600 mg once a day.
Common side effects
- Nausea
- Heartburn
- Diarrhoea
Get medical help straight away if
- Wheeze or breathlessness
- Rash or swelling
Be careful
Can cause nausea; dissolve effervescent tablets fully.
Other medicines and interactions
Do not take with cough suppressants for a wet cough. Separate from antibiotics by 2 hours.
Pregnancy and breastfeeding
Ask your doctor before use in pregnancy and breastfeeding (antidote use in overdose is always appropriate).
Same composition, other brands (6)
Ask your doctor or pharmacist before switching brands.
Common questions
What is Nacfil?
Nacfil is a effervescent tablet by Fourrts India Labs containing Acetylcysteine 600 mg.
What is Nacfil used for?
Thins thick phlegm in chest conditions; in hospitals it treats paracetamol overdose.
How should I take Nacfil?
Effervescent tablets or sachets dissolved in water, usually 600 mg once a day. Always follow the dose your doctor or the pack gives.
What are the side effects of Nacfil?
Common side effects include: Nausea, heartburn, diarrhoea. Get medical help straight away for: Wheeze or breathlessness, rash or swelling.
Does Nacfil need a prescription?
It is usually sold without a prescription in India, but ask a pharmacist if you take other medicines or have a long-term illness.
Can I take Nacfil in pregnancy or while breastfeeding?
Ask your doctor before use in pregnancy and breastfeeding (antidote use in overdose is always appropriate).
What are the substitutes for Nacfil?
Brands with the same composition: Mucinac 600, Mucaryl, Quicnac Sugar Free Orange Effervescent, Viscojoy Sugar Free Orange Effervescent, Lumenac SF Orange, Mucotab. Ask your doctor or pharmacist before switching.
Sources and further reading
- Acetylcysteine (N-acetylcysteine): NHS · MedlinePlus
NHS (UK National Health Service) and MedlinePlus (US National Library of Medicine) are free, reviewed medicine guides. Brand names and doses there may differ from India.
Composition checked against pack details from large Indian online pharmacies. Last reviewed 31 October 2026. Written by Satya Babu.
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