Zarbees definitely

probiotic*

Mommys Bliss has a prebiotic for babys. I give it to my daughters every day, 5 drops daily. Also Zarbees Baby Cough Plus Cold helps when my daughters get sick and Hylands Cough Plus Cold also. I do homeopathic medicines as well expect for infant motrin.

Is there something he can take a a probiotic for baby

If he's having a really hard time you should go to the doctor.
You. An prop him up on a boppy so his nose can drain if it needs to. Set up a humidifier. Make sure you are sucking boogers. Sit in the bathroom with hot water running and let him breathe in the steam and suck boogers(the steam will loosen it). Put baby Vicks vapor rub on his feet.