The molecules of which foods are made are too large to pass through the lining of the digestive system. Digestion results in the formation of smaller molecules that are able to pass through that lining and enter the person's bloodstream. (for example,) Sugar molecules formed by the digestion of starch enter the bloodstream.
Either way, not worth the risk - you can get very ill from consuming or drinking expired products, including ice tea. Now if it is a best before date, that tells us something else. It says it has not turned or gone bad, but that it may not taste very fresh after the date on the bottle. There is a huge difference between the comments expired and best before - so please use caution and consider these points. For dry ice tea mix, you usually see a best before date.
These odours can give the water a foreign taste. If you keep plastic bottles of water in the garage they could develop a petroleum or petrol aftertaste. But is you happened upon a bottle of artesian water from the early Neolithic in the back of your pantry, thereâs no reason not to take a sip. âOld bottled water isnât dangerous to drink but it can taste bad,â says Krogh, who thinks this is one of the reasons for expiration dates on water bottles. âIf it has been stored poorly itâs likely to develop a bad taste and this could dent the reputation of the bottling plant.