My reference book gives me an example as follows:
Here is some medicine.
To me, it does not make sense since some implies things more than one; thus, should medicine becomes medicines?
Having said that, should the sentence be written as:
Here are some medicines.
MEDICINE can be used both as a countable and uncountable noun.
So we can say: "Here is some medicine" (uncountable noun) or "Here are some medicines" (countable noun).
See the entry from Oxford Dictionary:
"NOUN
mass noun
A drug or other preparation for the treatment or prevention of disease.
‘give her some medicine’
count noun ‘your doctor will be able to prescribe medicines'"
