A small yellow tablet from a reputable-looking shop. The packaging is the part that bothers me.

A batch number and an expiry that are almost up on a new purchase usually means the box was copied.

Genuine cartons have print that aligns to the die cut. Copies drift by a millimetre or so.

Weight and dimensions are how blank tablets get identified, and you cannot do that from a photo.

Imprint is the strongest signal, colour is the weakest, and the shape only narrows the manufacturer.

Any ideas welcome, and I will report back what the pharmacist says.