What can you carry on and what can't you as far as personal belongings limits on amount and things anybody know specifics

Ok I knew about the obviously dangerous items.. But thanks for letting me know about the liquid so no medicine liquid more than that even if meds I need during flight... Or do need get a drs note for.. Notorized they held my 72 year old mother and wouldnt let her get on the plane because she had a months worth of a narcotic just the lowest dose n 90 count... Point 05 not even mg a piece and had her nane on it everything her address with rest her meds even vitamins heart meds n arthritis meds but they made huge deal about that one bottle and she got for my brother passing away in a horrific dirt biking accident n lost her son he was 24 not even started his life yet.. Until they contacted her dr n made big fuss I think rather stow in under plane if give that much issue she had miss her flight n wait for next one n they didn't even make it right made her pay more for next one because was only few sears left and was more expensive they should complt her.. Anything else like any phones ect

What you can't carry-on Any liquid more than 100 ml, sharp objects, flammables, cigarettes. People generally don't carry other avoidable things. An exhaustive list can be found on the airlines website, which also appears on your screen when you check in.