Yes, you can use nettle infusion together with Trittico and Hydroxyzinum. These drugs do not interact with stinging nettle.

Although combining these drugs with nettle is not contraindicated, it should be borne in mind that both Trittico and Hydroxyzinum can lower blood pressure, and nettle can intensify this effect. Therefore, in the event of symptoms of hypotension, such as headaches, drowsiness, weakness, you should give up drinking nettle.

Here you can compare the prices of nettle teas in online pharmacies and place your order with home delivery or collection at the pharmacy:

https://www.gdziepolek.pl/produkty/44607/lisc-pokrzywy-liscie/apteki

https://www.gdziepolek.pl/produkty/85840/zielnik-apteczny-pokrzywa-fix-liscie/apteki

https://www.gdziepolek.pl/produkty/6588/apteo-pokrzywa-liscie/apteki

In cities such as Warsaw, Wrocław, Katowice, Kraków, Lublin, Gdańsk, Łódź, Szczecin, Białystok, Poznań and Chorzów, products can be ordered with instant delivery in as little as 1 hour thanks to the Wolt Drive service.
Check if the service is available in your location: https://www.gdziepolek.pl/koszyk/szybka-dostawa?src=zf

Here you can check the availability of these medicines and make a reservation at the pharmacy:

https://www.gdziepolek.pl/produkty/80016/trittico-cr-tabletki-o-przedluzonym-uwalnianiu/apteki

https://www.gdziepolek.pl/produkty/74561/hydroxyzinum-adamed-tabletki-powlekane/apteki