What's the appropriate drug for cold?

According to the CDC ( Centers for Disease Control and Prevention) there are more than 200 viruses than can cause a cold, the most common one in the United States is the " rhinovirus".

Common cold viruses:
Rhinovirus
Common human coronaviruses
Parainfluenza viruses
Adenoviruses
Enteroviruses
Human metapneumovirus
Respiratory syncytial virus (RSV)
Symptoms of a cold: runny nose, congestion, sneezing, and coughing.

Now, you need to identify which one you have in order to find the right medication:

The most common 4 types of cold are:
rhinoviruses
adenoviruses
human parainfluenza virus
respiratory syncytial virus

Cleveland Clinic
"How do I know what type of cold I have?
Common Cold (Rhinovirus): Symptoms, Cold vs. Flu, Treatment
Common colds turn into chest colds when the virus travels from your nose and throat to your lungs. Occasionally, bacteria cause chest colds. You can have a cough with a common cold or a chest cold. But chest colds produce a wet cough, meaning you may feel or cough up phlegm."

Source: Cleveland Clinic

I suggest you seek medical attention , as there is too much information regarding this topic and self medicating or asking a Pharmacist what OTC to take can be of high risk.

"A common cold can lead to complications like sinus infections, middle ear infections, and pneumonia. "