Dear Rahem

My paper about to use in yogurt

S. boulardii doesn't consume lactose. so as said by Dr. Alaa Kareem you can use yogurt cultures.

Other way may be by addition of probiotic L. acidophilus or L. rhamnosus or any other Lactobacillus sp. that can convert lactose.

Other wise if S. boulardii is added only for its probiotic affect and want to use milk as a medium then lactose free milk can be used and this can be done using filtration techniques like UF.

I agree with Dr. Alaa Kareem Niamah and Dr. Sudheedra

thank you Dr. Alaa Kareem Niamah

thank you Dr. Sudheedra

thank you Dr. Shayma

In fact I want to get account for the yeast up to 109

so converting lactose not enough for that

you know that S. boulardii doesn't consumed lactose. so a yogurt cultures do that.