How long to try Alimentum?

Stephanie2167

We've been on Alimentum for almost 3 weeks. We were trying to find out if H's constant congestion was from a dairy allergy or from her reflux. Since being on the Alimentum, her spitup has lessened and for a little bit her congestion had seemed to get a bit better. But now she has a cold so the runny nose and congestion is back. I'm trying to decide how long to wait out the Alimentum before trying a milk based or even soy formula. I don't want to keep forking out the money for hypoallergenic if its not necessary.

How long should I give her the Alimentum? Also, she been on the RTF and I have two cans that Similac sent me of the powder Alimentum. Did anyones LOs have issues with switching from RTF to powder (I know the ingredients differ just a bit).