Wa'alaikum assalam! Ohhh ada, my friend's baby dulu pakai Nan HA jugak, and honestly poop dia memang lain sikit dari babies yang minum susu lain, biasanya greenish-brown or greenish, some days boleh jadi bright green depending on berapa banyak dia minum and how his tummy is doing. As long as baby tidur ok, active, and weight gain is good, the green/brownish colour tu normal je untuk Nan HA, tapi if ada mucus banyak sangat or signs of allergic reaction macam rash, consult la with your PD just to be safe!