The best collagen is one extracted from fish.
This collagen contains collagen hydrolyzate, amino acids, patented pomegranate extract, vitamin C, and hyaluronic acid.
Pomegranate-lemon flavor

Instructions for use:
Mix a personal sachet in half a glass of water (about 100 ml) once a day.

Kosher Mehadrin - BADATZ Hatam Sofer. 

It contains 30 individual bags—2.6 grams. Each pack contains 30 servings of 6 grams, for a total of 180 grams.