How many ml is in 7.5 mg?

It all depends on the medication. For example, cough syrup will usually say something like 35mg/5ml.

Then you could set up a ratio to get the exact amount, like this:

35mg X (this is what you need to find out)

______ ______________________________

5 ml 7.5 ml

In this situation, you cross multiply (7.5 times 35) and then divide by the remaining number (5) to equal how many mg is in 7.5 ml.

Just look on the bottle for the strength. If it isn't near the product name then look in the ingredients.