Naphazoline Hydrochloride Nasal Drops side effects are mainly as follows: first point, some patients in order to relieve the symptoms, if the drug is used frequently, it is easy to cause nasal rebound congestion, aggravate the feeling of nasal congestion. If applied for a long time, it is easy to cause drug rhinitis, so this drug generally should not be used continuously for more than 7 days. The second point is that some patients may experience a slight burning sensation in the nasal cavity, a pins and needles sensation, and a dry sensation of the nasal mucosa after nasal spraying. The third point is that some patients may experience clinical symptoms of headache, dizziness and rapid heart rate after using the drug.