25 g is not a huge amount for our body to digest or to move from stomach further. However, if we have a full meal on top, our stomach will consider this as a food poisoning and when the whole process will start, it will inevitably decide to remove everything what is inside your stomach. And there are two problems: first, the concentration may be enough to kill you but will be far from 25 grams resulting in severe prolongation of the process. However, this is an ideal case and has nothing common with reality. Second, more restless and realistic, is that a huge part of SN will be vomited and you will experience all the SN symptoms plus the symptoms of poisoning which normally occur cuz amount of absorbed SN can be really low. It may last a few days if you had a decent supper but you will be unable to hold on and will call ambulance.