how long can you pump for?

[trian]

i pump for 15 mins as this is what it said on a manual breast pump i had.

is it bad for your breasts/supply to pump for longer?
is there a maximum amount of time?
thanks in advance for any advice :-)

I can only pump for 10 minutes max. After that I don't have another let down and I start to feel queasy. If it's not too rude to ask, how come you're pumping?

I would pump until I had filled a bottle.... Sometimes that was a few minutes, sometimes much longer.