Reversible caps, and the choice they hand the user

Why they exist

For a household with no children, a child-resistant cap is a daily irritation that protects nobody, and for somebody with limited hand strength it can be a genuine barrier to their own medicine. A reversible cap is an answer to the senior-adult half of the problem.

And why they are a compromise

A package is only child resistant while it is assembled the resistant way. Once somebody flips it, the protection is gone until they flip it back, and nothing reminds them. Grandchildren visiting is the case everybody thinks of afterwards.

The user has to understand the choice

Which means the instruction has to be clear on the cap itself, not just in a leaflet. If the two orientations are not obviously different, people reassemble it the easy way without realizing they have decided anything.

Whether it satisfies a requirement is a separate question

A reversible cap used in its non-resistant orientation is plainly not special packaging. Whether a reversible design satisfies a requirement at all, and under what conditions, is a question for the regulation and the testing rather than for a catalog description.

It is a good default for non-required products

For something that is not legally obliged to be in special packaging but ought not to be casually opened by a child, giving the household the choice is reasonable and honest. That is most of what this shelf is actually used for.

Say which way is which on the label

The one line that makes a reversible cap work is an instruction the user can follow without thinking. Leaving it to the cap molding alone is how the resistant orientation stops being used.

They suit the household, not the shelf

A product sold at retail has no idea which household it is going to, so the reversible choice is really made by the person who gets it home. That is an argument for them in direct dispensing and a weaker one for anonymous retail.

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