Nasal administration means putting something up your nose. Instead of taking medicine or other substances by mouth, you can use your nose to get it inside your body.
There are different ways that people use their nose to give medicine or drugs. Sometimes they use a spray that goes into the nostril and helps clear the nose if it's blocked or running.
Other times, people use medication that comes in a small bottle with a dropper. The liquid is squeezed into the nose one drop at a time. This can help get the medicine inside the body more quickly, as it doesn't need to be digested like a pill.
Nasal administration is a good way to get certain medications into your body quickly, especially when you need fast relief from things like allergies or congestion. However, it's always best to talk to a doctor or pharmacist before trying any new medications or substances.