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Congestion is a feeling of "stuffiness", blockage or restricted airflow.1 It's often a symptom of illnesses that affect the upper respiratory tract, like the common cold or a sinus infection (sinusitis).1 These conditions usually make your body produce too much mucus, making your nose and sinuses feel clogged or blocked.2,3


The symptoms that come with nasal and/or sinus congestion depend on the underlying issue that’s causing it.4-6 All the conditions below can cause mucus build-up which leads to congestion, but each one has a different set of common symptoms:4-6



Find out more about colds and flu and mucus congestion:

Find out more about sinus infections and congestion:

Treating sinus and nasal congestion

When your nose and sinuses get plugged up with thick or sticky mucus, certain medications can help you. For example, mucolytics are medications that make the mucus thinner and less sticky, so it’s easier to blow out, leaving your nasal passages clear.8

Did you know? Clearing out the mucus can also prevent another infection from developing in your sinuses.9
  1. Meltzer EO, Caballero F, Fromer LM, et al. Treatment of congestion in upper respiratory diseases. Int J Gen Med. 2010;3:69-91.
  2. Medical definition of congestion. MedicineNet. Accessed August 4, 2021.
  3. Nasal congestion - definition. Mayo Clinic. Accessed August 4, 2021.
  4. Allergies or sinus infection: how to tell the difference. Healthline. 2018. Accessed August 4, 2021.
  5. Common cold - symptoms and causes. Mayo Clinic. Accessed June 14, 2021. causes/syc-20351605.
  6. Influenza (flu) - symptoms and causes. Mayo Clinic. Accessed June 14, 2021.
  7. Are sinus infections contagious? WebMD. Accessed September 21, 2021.
  8. Kryukov AI, Turovsky AB, Izotova GN, et al. Treatment of acute sinusitis. Russian Medical Journal. 2012;9:485-488.
  9. Knowles MR, Boucher RC. Mucus clearance as a primary innate defense mechanism for mammalian airways. J Clin Invest. 2002;109(5):571-577.
Sidebar References
  1. Sandoz SA (Pty) Ltd. ACC® 600 (effervescent tablets). Professional information. 02 November 2021.
  2. Sandoz SA (Pty) Ltd. ACC® 20 mg/ml Oral Solution. Professional information. 05 October 2021.
  3. Sandoz SA (Pty) Ltd. ACC® 200 (effervescent tablets). Professional information. 08 July 2020.

ACC® 600
[S1] ACC® 600 (effervescent tablets). Reg. No.: 45/10.3/0229. Composition: Each effervescent tablet contains 600 mg acetylcysteine. ATC Code: R05CB01.
ACC® Oral Solution
[S1] ACC® 20 mg/ml Oral Solution. Reg. No.: 48/10.3/0261. Composition: Each 1 ml of ACC 20 mg/ml ORAL SOLUTION contains 20 mg acetylcysteine. ATC Code: R05CB01.
ACC® 200
[S1] ACC® 200 (effervescent tablets). Reg. No.: 29/10.2.2/0753. Composition: Each ACC 200 effervescent tablet contains: 200 mg acetylcysteine. Pharmacological Classification: A10.3 Medicines acting on the respiratory system – other.
For full prescribing information refer to the Sandoz Professional Information approved by the South African Health Products Regulatory Authority (SAHPRA).

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