Vit and minerals for allergy prone child? Recommendations please?

[endofday]

Gluten free, OAS (so no fruit), no soya, no nuts,

Basically need a good vitamin to support a very restricted diet, that covers everything, and is easy for a sensitive child to take… suggestions, please?

The no fruit and no soya makes it tricky, I'm assuming that means no fruit concentrate?

Would a mouth spray like this work https://amzn.eu/d/0ce8Pc1f . I can't see ingredients on the listing but assume they are available online somewhere, and there are plenty of other similar ones.

We have this multi vitamin for my daughter with a limited diet due to multiple allergies, reflux and fussiness. Her dietitian took a photo of it to recommend to others.
https://www.amazon.co.uk/gp/aw/d/B002QWKJFG?psc=1&ref=ppx_pop_mob_b_asin_title