Improvements in the packaging of drugs and chemicals may reduce the likelihood of severe intentional poisonings in adults.

Because of the inconvenience and longer time required to punch out the tablets, strip packaging may reduce the number of tablets that can be readily swallowed by adults with self-poisonings. In fact, hospital-based studies of paracetamol poisoning in the U.K. and Hong Kong have shown that blister packs were associated with fewer tablets being ingested and large overdoses were mostly from loose preparations. In Australia, following the change in packaging for carbamazepine from bottles of tablets to blister packs, a marked decrease in the reported number of tablets ingested by patients was seen. Reducing the maximum number of tablets that can be available in individual preparations or prescriptions may also reduce the likelihood of severe poisonings. In France, but not in the UK, the content of each pack of paracetamol has been legally limited to 8 g. This was thought to be one reason why severe liver damage and deaths after paracetamol poisonings are less common in France than in the UK. Medicated oils containing methyl salicylate pose the threat of rapid-onset, severe salicylate poisoning if swallowed. To reduce the amount of methyl salicylate that can be readily swallowed, the methyl salicylate content and the size of the bottle and its opening should be restricted. In adults with Dettol poisoning, serious complications such as pulmonary aspiration are more likely if a large amount is ingested. Similarly, the risk may be reduced by restricting the size of bottle and its opening.