Where can I get eyedrops made with tamarind fruit here in US?

[TEENIEQUEEN]

I've read online that tamarind fruit helps with the water layer of the eyes which is my main culprit of dry eyes caused by contact lens wear. The article I read said Rohto's Dry Eye Relief contains tamarind extract but I do not see that on the US Rohto's website ingredients list. I'm guessing only the Rohto over in UK contains tamarind. So can anyone help me get some eye drops containing tamarind?