Some times my neighbor ask some things like coffee powder, sugar, medicines and other things which is important to him. Most of the time i offer the things whichever he needed from me, if i have that thing. There is nothing wrong in helping our neighbors when they needed it from us, at the same time we don't encourage this kind of habit. If we provide the things every time, they started to ask things frequently from us.
We can give the things based on the necessity. If the thing is very essential to them and it is very hard without the thing, then we may help them and offer the needed thing. If they have the ability to skip the thing and ask the thing casually, then we must avoid giving that thing to them to stop this kind of habit as a frequent one.
Giving medicines is based on the situation, if the medicine is important to them, then i will give it to them and try my maximum to avoid frequency of this habit. It is really irritating if a person asking things for lot of time. Do you give things to your neighbors?