Most people know that there is a difference between brand-name and generic medications. However, there are also differences among generics of the same drug. This is because one generic medication can have multiple manufacturers.
For example, fluoxetine is the generic form of the brand-name drug Prozac. There are many different drug manufacturers who make fluoxetine, and they all have slightly unique formulations. All of these versions of fluoxetine are safe, but different manufacturers might use a slightly different manufacturing process, filler ingredients, shapes, colors, and sizes of the pill. Pricing can also vary between manufacturers. Because of these variations, different manufacturers’ versions of generic fluoxetine might work better for different people.