You can buy benzydamine over the counter, available in popular brand-named products from Difflam. It’s available in spray, rinse, or lozenges, so you can choose which formula will be the best choice for your problem.Click to see full answer. Also know, can you buy Benzydamine?Benzydamine mouthwash and spray are available on a prescription from a doctor or dentist. You can also buy them at a pharmacy, without a prescription.Also Know, is Difflam good for mouth ulcers? Difflam is pain-killing & numbing and is used for the treatment of sore throat, mouth ulcers, gum pain and other oral pains. It contains the active ingredient benzydamine hydrochloride, which is a non-steroidal anti-inflammatory drug that reduces inflammation and pain in the mouth and throat. In respect to this, what does Difflam mouthwash do? Liquid for use as mouthwash/gargle. Difflam Oral Rinse is a locally acting analgesic and anti-inflammatory treatment for the relief of painful inflammatory conditions of the mouth and throat including: Inflammatory conditions: Pharyngitis, aphthous ulcers and oral ulceration due to radiation therapy.Can you swallow Difflam spray? If you take more Difflam spray than you should If you accidentally swallow a dose, it is unlikely to cause any harm.