Nested Function To Return "Product A - 3"

I have two columns of data. for example:

Column A
1
3
4
0
2
0
0
3

Column B
Product A
Product A
Product B
Product B
Product A
Product A
Product B
Product B

What I need the function to return is:
Product A - 3
Product B - 2

This is what I thought the function should look like but it is not working:

=IF(A6:A50>0,COUNTIF(A6:A50,"Product A"),0)

If Product A or B did not have any values >0, it would return a zero.