Readily available formula for lingering cough/phlegm after flu?

Usually I would get a custom formula but the practitioner is not available, so I’d like to get one off the shelf today.
I had a flu (fever, chills, wet cough, lung phlegm, wheezing, headache, body aches). But I am in the recovery now and only have lingering cough, some phlegm in my throat, little bit of nasal congestion and fatigue. No other symptoms. I need a formula to aid recovery and get the cough/phlegm away.

Any recommendations for one that would be available at my local Chinese grocer, they sell many formulas?