If none of these are available.
You can go to Hainan People's Hospital (Longhua Road). There is a road next to that hospital called Yanzao Road.
They are all engaged in drug wholesale. Most of the medicines in Hainan People's Hospital are bought here, so the price is cheaper than that in the outside pharmacies.
There is no doubt that it is false. I bought some medicine here. Difference 17 yuan. Some even more.
If it's gone here, it may not be.