Unfortunately, it is not available in the USA. I had some New Zealander friends bring it to me from Switzerland, while they were studying French there. (This transaction happened when we were in Kenya.) It is expensive stuff!
My love affair with Trybol began a long time ago. We were flying back from Kenya on Swissair, and they gave the passengers tiny tubes of blue Trybol toothpaste. (And I haven't been able to get that variety in at least ten years.)
Anyhow, the green tea variety provides a very unique taste. Wonderful Clean. Fresh.
You will notice the product description on the back in three languages - German, French and Italian, in that order. Those are the three main languages of Switzerland, in the order of numbers of speakers.