How long after administration does the effect of the preparation start Forlax ?

According to the manufacturer, the effect of Forlax 10 g occurs within 24-48 hours after administration.

The daily dose should be adjusted individually according to clinical symptoms and may range from one sachet per day (especially in children) to two sachets per day.

It should be remembered that Forlax should only be a temporary auxiliary treatment in addition to the treatment of constipation with an appropriate lifestyle and diet. Improvement of peristalsis as a result of treatment will be maintained provided that a healthy lifestyle and dietary recommendations are followed.

Here you can compare the prices of sample constipation preparations and order them with home delivery or collection at the pharmacy:

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https://www.gdziepolek.pl/produkty/30975/forlax-10-g-proszek-do-wytworzenia-plynu/apteki

https://www.gdziepolek.pl/produkty/87105/aboca-melilax-plyn/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.
Throughout June, delivery with Wolt Drive is free on orders from 99 zł  - check if the service is available in your location:  https://www.gdziepolek.pl/koszyk/szybka-dostawa?src=zf

I am sending you materials that may be helpful:

https://www.gdziepolek.pl/artykuly/zaparcia-jak-z-nimi-walczyc