Nose drops such birli betamethasone. These are used for conditions such as hay fever, allergies and nasal polyps. Reversing enlargement of blood vessels in the area they are applied to. They cause a narrowing of the blood vessels. Spacer devices are used with pressurised MDIs. There are various types - https://wikimapia.org/external_link?url=https://tr.wikipedia.org/wiki/Vitamin