The active ingredient in paracetamol becomes toxic as it ages, I would suggest not taking the risk.
Obviously not, otherwise it would not have an expiration date.
No I dont recommend eating anything after the Expiration date
Is it safe to eat coconut cream after expiration date
2 months
It is not recommended to take Mucines DM after its expiration date. Most medicines have a long shelf life, but they become ineffective after the expiration date.
No
Is it safe to take lipozene after it has
are fleet enemas safe to use after the expiration date
No.
salad dressing
no
The expiration date on most drugs tell you when the manufacturer is guaranteeing it will have the maximum potency. Taking a drug after the expiration date is taking a chance that it won't be as effective as a drug taken within the "guaranteed effective." So, in answer to your question, on the diphenhydramine, no one knows if it is safe. All you can say for sure, is the manufacturer will not guarantee the drug is 100% effective after the expiration date.