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233002 tn?1316027966

How long does Pegintron stay good in the powder form

How long does Pegintron stay good in the powder form
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158241 tn?1237719523
Hi, the expiry date is written on the labeling. You should not use it after this date,  because you never know the quality then.
Of course I assume it was treated well and kept cold.
The expiry date is shorter than the true stability date, this is for safety reasons. We have a similar situation with food, eg milk. Often milk is still ok after the expiry date, but not always.

Sorry for my English, my German is better :-)
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Avatar universal
Your English is OK, pretty good actually. I wouldnt understand any of your Deutch.
But thats cause I cant speak German
CS
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Avatar universal
In powder form (before mixed with liquid) Peg Intron should be kept at room temperature, not "cold"/refrigerated like the Peg Intron RediPens or pre-filled Pegasys vials. Their should be an expiration date written somewhere.

-- Jim
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Avatar universal
That should have been "pre-filled Pegasys SYRINGES", not "vials".
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158241 tn?1237719523
Jim wrote: "Peg Intron should be kept at room temperature, not "cold"

I don't think this is a good idea. I have a package PegIntron here and it is clearly written on the labelling: Store in a refrigerator (2°C - 8°C).
See the SPC for ViraferonPeg too: http://tinyurl.com/32w6tu
Interferon is a protein and stability of proteins increase between 2-8°c, compared to RT. Proteinsolutions are less stable than powder, of coures, but it is always better to keep IFN between 2-8°C, powders too.
The bulk of proteins in powderform is even stored iin freezer at the the suppliers, but solutions would degrade in the frost below 0°C because of shear strain.

Conclusion: IFN-products should be kept between 2-8°C at home for best stability.

Regards, drofi

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