Are there any plants to use as a laxative or for stomach acid? If yes, how do you use them?
the plants most used as laxatives are flax, of which seeds are used, and senna; these two plants enter many ready-made laxative products, which you can find in all herbalists; against stomach acid, algae, marshmallow and yarrow extracts are used instead.
Of all these plants are generally used decoctions, or oily extracts (in particular of flax seeds).
Your herbalist will be able to advise you, because it is always good to evaluate the best way to take a medicinal herb on a case by case basis.