While you wait for a decent promo in Coles/ Woolies and don't want to walk out to a chemist store, this could be a good deal.

Description from the page:

Cold Symptom Relief Vitamin C helps to reduce the severity and duration of common cold symptoms. Symptoms of the common cold include blocked or runny nose, dry cough and mucus congestion.

Immune Function The immune system is composed of cells and molecules organised into specialised tissues, which act as the body’s first line of defence. Vitamin C helps support a healthy immune system.

Antioxidant Support Vitamin C provides antioxidant support to help protect cells against potential free radical damage.

Natural Orange Flavour Formulated without any added artificial flavours or colours.

Some other options:

https://www.amazon.com.au/Australian-Naturalcare-Flavoured-V...

https://www.amazon.com.au/Cenovis-Sugarless-Orange-Flavour-T...