It won't harm you. You may feel some initial stomach discomfort due to the gelatine swelling, but this passes off.
Depending on their diet many people nowadays consume quite a few grams of gelatine daily with no ill-effects: it can be found in supermarket desserts, as thickeners in many foods, trifles, Turkish Delight and marshmallows to name but a few.
Gelatine is of poor nutritional value as it contains amino acids that are produced by the human body and it lacks sufficient important amino acids that are not made in the human body.