Historically in the older days, drugs were put alphabetically on the shelf in the pharmacy. So chlorpromazine generic would be filed in the T's for the parent drug name Thorazine.

Today, more pharmacies put them alphabetically by GENERIC name, instead, because Techs are not trained in everything and don't know all the names and cross references.

So Chlorpromazine may be next to or very close to cyclobenzaprine. Add to that fact, the alarming fact that most doctors cannot spell worth a darn, and thread out letters in long names to fudge syllables, you have fodder for a big error!

It is inconceiveable that you were given this drug... so something is wrong. There are new doctors out there now who don't even have experience with this drug, because it is not used anymore commonly.

Another common error I've seen on boards like this, is clonidine/clonazepam. The brand name for clonazepam is Klonopin, and the brain mixes them up. It is similar to the confusion when Xanax is called Zanax..which resembles Zantac.

When Prilosec came out it was called Losec. This looked like Lasix when written out sloppily like doctors do, and many errors happened in the first year in US. It was then changed to Prilosec. In other countries it remained as Losec.

Omacor was changed to Lovasa because of written confusion and errors. (RX fish oil).