Is Zinobiotic+ gluten-free?

Yes.
ZinoBiotic+ contains special beta-glucans from oats, which do not contain gluten or other grains.

INGREDIENTS: Resistant starch from maize, gluten-free beta-glucans from oats, inulin, fructo-oligosaccharides (FOS), resistant starch from potatoes, psyllium husk, partially hydrolysed guar gum from guar beans, resistant starch from green bananas.”