aspirin_chargeEXTRA charges on a restaurant tab can leave a bad taste in your mouth.

Especially when it’s for something as small as an aspirin.

A picture of a meal tab with a 25 cent charge for aspirin has gone viral, landing the Catalan restaurant that issued the bill with food for thought.

They could face penalties for the unlawful sale of medication — chances are the proprietor now has a headache worse than his customer’s…