Babesmum:i have breastfed my girl for 8 months. But since coming to work, supply is lower. I have a few issues, hope the exprerienced mums can advise. (1) Is it safe to give frozen breastmilk? (2) If i supplement with milk power, will it reduce the good effects of breastmilk? (3) How do i supplement with milk powder? (4) Which brand of powder is good?It is absolutely safe to give frozen breastmilk. If your mother-in-law is taking care of your child, it will be better for your husband to speak to her about the issue on giving your child frozen breastmilk that has been thawed and warmed. Traditional older folks are not keen on the idea of babies consuming thawed frozen milk. The good effects of breastmilk will not be compromised if supplement with milk powder. You can supplement milk powder as and when you feel there is a need. If you have ample supply of frozen breastmilk, you do not need to supplement with milk powder. The brand of milk powder depends on personal choice. One brand may be good to another but may not be suitable for your child. For example, some brands of milk powder can cause constipation or watery stools in babies. You have to try to find out the effect.