i have no way of specifically answering your question (not enough information) but mistakes can be made in filling a prescription so it would be prudent to take the medication back to the pharmacy for an explanation. sometimes pharmacies substitute medications made by different generic manufacturers and not all of these generics will look the same. your medical provider may have made a change in dosage and forgot to tell you about it (happens quite a bit). either way. it is wise to check it out with the pharmacy or with the medical provider who prescribed it to you.
why is my new prescription of zolpidem a differant color and size