ENALAPRIL MALEATE, brand name LINATIL is great. I've been using it for three years now. First at 20 mg per day, then 10 mg and now for the last two years 5 mg per day. Mine costs about 5 € for 100 tabs.
If it is just a little high you can take dandelion root, it's a mild herbal diuretic that's cheap and safe.
BTW: I don't want to sound like a dick, but search is a good option and i've given this same advise 4 times now.
PS: Aspirin doesn't really lower BP, at least not i'n me.