Going somewhere directly is usually quicker. That’s true of medicine too.
People with Parkinson’s have a dopamine deficiency in the brain. But taking standard medication orally is not as efficient as it could be, since the liver and blood-brain barrier act as filters.
Which is why researchers in England are currently working on a nasal spray that reaches the brain quicker.
To give the volatile drug better adhesion in the nose the team embedded it in a gel . Meaning more of the liquid medication reaches its intended destination.
Initial tests on mice show that taking medication in this way is more effective than through intravenous injection.
Moreover, side effects are reduced since less medication is required.