My dd 10 gets very bad swelling when she gets bitten by a mozzy, what can I do?

[ihatethecold]

She has had to have antibiotics twice already this year.
She gets bitten and the swelling is raised and red about 3 inches in a circle around the bite.
I really don't want to keep giving her anti biotics.
We have antisan cream for the itch but it doesn't help the swelling.

Any advice

My Mum uses this the little clicker previously mentioned it's fab.

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