cephalexin granulate for suspension problem

[Robert]

Dear Colleagues,

From oone of our cliënts in Norway, I got the following question. She tried to make a suspension of cephalexin (keflex). She added 30 ml of water to the flask, shook and added the second 30 ml of water to the flask. Upon shaking the second time, she noticed that the cephalexin had formed a solid mass that was -according to her- quite difficult to suspend.

Has anyone had the same problem? Does anyone know what might have caused it and, how can it be prevented? I have not had this problem and I know of no other complaints about this.

[admin]

Robert

I think all you can do is shake the powder to loosen it, and add the whole 60mls at once. A good shake should give it a good enough mix.

The batch could have possibly been an old one, or even out of date? That could have caused some caking of the powder. I think it's better to add all the required water at once, so to avoid a thick suspension, followed by "watering down" of it.

The last idea I can think of is to report this to the company who makes it, it could be a bad batch. If all else fails I'd buy in a different brand if the drug is being prescribed as a generic.

[Racer]

I think all you can do is shake the powder to loosen it, and add the whole 60mls at once. A good shake should give it a good enough mix.

That's correct- a good shake of the dry powder so that the water is able to penetrate and "wet" all the powder is the best technique.

Other reasons for an unsatisfactory mix could be that the bottle hasnt been sealed and the powder was damp to begin with

[admin]

Racer

Was this a test?

[Robert]

Racer

Was this a test?

Of course it was. :roll: Your license depended on it... :wink:

[admin]

Of course it was. Your license depended on it...

OK fair enough - I guess I'd better watch what I post from now on!

:?

[Linnear]

As a sideline, I've always loved the smell of cefalexin suspension. I'm always tempted to try a swig myself!

[admin]

I once knew a pharmacist who had a swig of the green stuff to see what it made him feel like!

I reckon a swig of cefalexin suspension is nothing compared to that - go on swig the lot!

:twisted: