You must not continue the Nasoxyl nasal spray long term.
It is to be used only for short term use.
In the long term, Nasoxyl can cause rebound congestion, ie, congestion becomes more severe once the effect comes down, so you have to use the Nasoxyl again in a vicious cycle till it becomes addictive.
You should show an ENT for this if the sinusitis symptoms persist. Best for you would be a steroid nasal spray which is harmless and can give you complete relief. Your doctor can also do tests like XRay or CT of the sinuses which will give you relief.
TIll then you can try with the following home treatment:
Antihistamines - Alavert 10 mg once daily (OTC)
Decongestants - Sudafed 120 mg once daily(OTC)
Another important home treatment is Menthol steam inhalation - add Menthol salts (available OTC) to a bowl of steaming water and inhale the steam two - three times daily - this will relieve the congestion.
These will give you relief, but if the symptoms persist you should show an ENT.
Take care - wish you good health and a quick recovery. Stay safe.
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Dr. P. Jyoti, MD.