1. A solid pharmaceutical product for use in the photodynamic diagnosis of cancer, precancerous and noncancerous conditions in the lower gastrointestinal tract, comprising: a) an active ingredient selected from 5-ALA (5-aminolevulinic acid), a 5-ALA precursor or derivative 5 -ALA and their pharmaceutically acceptable salts； b) one or more triglycerides； iv) one or more emulsifiers. 2. The solid pharmaceutical product according to claim 1, wherein said active ingredient is a 5-ALA derivative, preferably 5-ALA ester or a pharmaceutically acceptable salt thereof. The solid pharmaceutical product according to claim 1, wherein said active ingredient is a compound of formula I or an acceptable salt thereof, R 1 represents a substituted or unsubstituted alkyl group； and each R independently represents a hydrogen atom or an R.4 group. The solid pharmaceutical product according to claim 1, wherein the one or more triglycerides are glycerol triglycerides and 3 identical or different C-Acid fatty acids, more preferably 3 identical or different C-Acid fatty acids, even more preferably 3 identical or different C-Acid fatty acids and most preferably 3 identical or different fatty C-Acids. 5. The solid pharmaceutical product of claim 1, wherein the one or more triglycerides are solid triglycerides selected from cocoa butter, lard, solid fat, hydrogenated coconut oil glycerides, hydrogenated palm oil, tristearin, tripalmitin and trimyristin, or liquid triglycerides selected from , tricaproin, triheptanoin, caprylic / capric triglyceride1. Твердый фармацевтический продукт для применения в фотодинамической диагностике раковых, предраковых и нераковых состояний в нижней части желудочно-кишечного тракта, содержащий:а) активный ингредиент, выбранный из 5-ALA (5-аминолевулиновая кислота), предшественника 5-ALA или производного 5-ALA и их фармацевтически приемлемых солей；б) один или более триглицеридов； ив) один или более эмульгаторов.2. Твердый фармацевтический продукт по п.1, где указан
