Which is correct? The intended meaning is "you should use it at the first symptoms of cold".
Thank you.
It is used to prevent respiratory infections, during/at the first signs of common cold and to boost energy of your body.
It is used to prevent respiratory infections, at the first signs of a common cold and to boost energy in your body.
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It is used to prevent respiratory infections, at the first signs of a common cold and to boost energy in your body.
Antonijaof common cold
This is clumsy. It would be simpler and more common to write of a cold.