Definitely! I always have nutra-drench and rooster booster b-12 on hand as well as ACV, hydro hen, and some other stuff to give sick or injured birds a boost (or when I just want to give my flock a boost)
I use hydro-hen for my chicks everytime, it has electrolytes (in case they don't drink enough), probiotics, and acidifiers. Is it necessary, probably not, but I have always had healthy chicks this way so I don't plan to stop.
P.s. this time I am also using nutra-drench in their water, but you...