Is it safe to take 5mg of Dexedrine (dextroamphetamine) while breastfeeding?

Should be. if needed for your medical condition, then should be ok. If being used to help weight loss, then would not use until you've stopped breastfeeding.
Don't recommend but. Because Dexadrine is a stimulant, with addictive potential, and can get into breast milk according to some research, consider bottle-feeding if you must take this med. That said, please check with pediatrician for best guidance. Enjoy your baby.
Dextroamphetamine. The majority of information on amphetamine during lactation is based on illicit amphetamine exposure and not from therapeutic maternal use. Amphetamines are excreted into breast milk and can lead to decreased milk production. Increased irritability, agitation, and crying have been reported in nursing infants. The manufacturer recommends that mothers taking dextroamphetamine refrain from nursing.

Related Questions

I use to take Adderall (dextroamphetamine and racemic amphetamine) 60mg a day. Then I became pregnant so I quit. I just quit breastfeeding and started back on it but it's not working.?

May take time. It may take time to become more effective after the hormonal changes you have gone through. Also the sleep deprivation can be a problem even on the medication. Talk with your doctor. Read more...
Check blood levels. Chemically, pregnancy sometimes results in significant changes in our pharmacogenomic expression profile. The safest approach is to work with your doctor to monitor blood levels of the drug as you slowly titrate dose upward. . Read more...

Is there anyway to breastfeed and resume taking adderall (dextroamphetamine and racemic amphetamine)?

Yes. Adderall (dextroamphetamine and racemic amphetamine) in normal therapeutic doses is considered relatively safe durin breast feeding.Some infants may become irritable, lose weight or not sleep because of increased sensitivity, but most do not. See: hale t, medications and mother's milk, 15ed, 322-323, 2012. Read more...