Is there a way to find out about medications

Your question is too broad - there are literally thousands and thousands of medications available in Ecuador and Cuenca.  Perhaps if you mention the specific medications of interest?  But otherwise, here is a list of approved medications that you can search to see if the medications you seek are included:

https://www.controlsanitario.gob.ec/wp- … mentos.pdf

Here is a list of Over-The-Counter (OTC) medications available:

https://www.controlsanitario.gob.ec/wp- … -VENTA.pdf

You can see other medications and lists at this page which includes the above list but is also a data base of medications in various categories:

https://www.controlsanitario.gob.ec/base-de-datos/

Here is a 368 page PDF that lists various medications, their usages, dosages, cautions, adverse effects etc:

http://apps.who.int/medicinedocs/docume … 9429es.pdf

You can search fybeca.com, which is a large pharmacy chain.
You will need to search using the Generic name in Spanish