The card does not explain why a dose of 5000 µg was chosen and does not name the daily need. It states: one daily dose contains 5000 µg of biotin, the pack contains 60 tablets; the exact composition and the recommended method of use are stated on the packaging. The recommended daily amount must not be exceeded.
General information (not a manufacturer's instruction): in large doses biotin can distort the results of some blood tests, so it is worth telling the doctor about taking the supplement.