Injectible Methotrexate w/out preservative length of viability

[Guest guest]

My Mother has just been prescribed injectable Methotrexate - 10 mg/wk.

The small vial in which it is dispensed by the pharmacy holds enough

for 5 doses. However, the vial does not have a preservative. Upon

questioning regarding storage, the pharmacist has instructed her to

fill 5 syringes at a time from the vial upon initial use and store the

unused 4 syringes away from the light for use on the 4 successive

weeks. I am told that these filled syringes will be viable for a

period of 90 days. I wonder if anyone else on injectable Methotrexate

does this, or if anyone would consider this to be accurate

information.

I am concerned whether, indeed, the medication would be viable for 5

weeks with no preservative. My Mother's rheumatological clinical nurse

believes that it would hold no longer than 24 to 48 hours.

What do others do? Thank you for you response.

[Guest guest]

Thanks so much for all of your responses. They are greatly

appreciated.

> My Mother has just been prescribed injectable Methotrexate - 10

mg/wk.

> The small vial in which it is dispensed by the pharmacy holds

enough

> for 5 doses. However, the vial does not have a preservative.

Upon

> questioning regarding storage, the pharmacist has instructed her

to

> fill 5 syringes at a time from the vial upon initial use and

store the

> unused 4 syringes away from the light for use on the 4 successive

> weeks. I am told that these filled syringes will be viable for a

> period of 90 days. I wonder if anyone else on injectable

Methotrexate

> does this, or if anyone would consider this to be accurate

> information.

>

> I am concerned whether, indeed, the medication would be viable

for 5

> weeks with no preservative. My Mother's rheumatological clinical

nurse

> believes that it would hold no longer than 24 to 48 hours.

>

> What do others do? Thank you for you response.

>

>

>

>