Abstract: The present invention relates to a medicament retaining sheet (14) for a medicament blister pack. In particular, it relates to a medicament retaining sheet which makes it more difficult for a child to release a medicament from the blister pack without making it unduly difficult for the elderly or infirm to remove the medicament. We describe a medicament blister pack retaining sheet (14) comprising at least one sheet (20) having points of weakness (23, 24) defining medicament release zones.