Wednesday October 28th
Exploring Pill Bottle Packaging: Why Is Something So Simple So Difficult to Open?
Safe, Smart & Sustainable Pharma Packaging. Alfa Digital Packaging, 2026.
What happens when the design that's meant to protect your health actually stands between you and your independence? Opening a pill bottle seems like a pretty simple task: you hold the bottle, twist or push the cap, take your medication, and close it again. For many, it takes just a few seconds and requires zero thought. But for someone living with arthritis, limited hand strength, tremors, or impaired dexterity, this simple routine transforms into a frustrating daily barrier to self-sufficiency (Lisberg et al., 1983).
Modern pill bottle packaging prioritizes safety above all else, using child-resistant mechanisms that demand specific coordination and significant force. Yet, in locking out children, these designs frequently lock out the very adults who rely on the medication to survive. Before exploring how we can fix this broken system, we must first examine why packaging evolved this way, how current mechanisms function, and where safety design crosses the line into exclusion.
Where Did Child-Resistant Packaging Come From?
Child-resistant packaging became much more common after concerns about young children accidentally accessing medications and other dangerous household products.
In the United States, the Poison Prevention Packaging Act of 1970 introduced requirements for child-resistant packaging. The purpose was to make certain harmful products significantly more difficult for children under five years old to open or access while still allowing adults to use the package properly (U.S. Consumer Product Safety Commission, 2015). Prescription medications usually come in child-resistant packaging, but patients can sometimes request a non-child-resistant container if needed.
However, the need for child-resistant packaging is still crucial. Accidental medication exposure can have serious consequences, especially for young children. Research has shown that people with rheumatoid arthritis can take longer to open standard screw-cap containers, and some may not be able to open them within the testing time (Sormunen et al., 2013). Additional safety features, such as flow restrictors for liquid medication and unit-dose packaging, have also been introduced to reduce the chance of children accessing dangerous amounts of medication (Budnitz et al., 2020).
Child-resistant packaging therefore has an important purpose. However, making something harder for a child to open can also make it harder for some adults.
What Types of Pill Packaging Are There?
There is more than one type of packaging used for medication, and each one requires the user to open it in a different way.
Standard Screw-Cap Bottles:
One of the simplest designs is a bottle with a standard screw cap. The user normally holds the bottle still with one hand while using the other hand to twist the cap. Even though this sounds easy, the movement requires grip strength and wrist movement.
One study involving people with rheumatoid arthritis found that standard screw-cap containers could be difficult to use. Two participants with rheumatoid arthritis were unable to open the container within the one-minute testing period, while participants with rheumatoid arthritis also took longer on average to open it. The container also required a large amount of wrist movement (Sormunen et al., 2013). This shows that even one of the simplest opening mechanisms can become challenging when a user has reduced strength or movement.
Blister Packs:
Another common form of medication packaging is the blister pack. Instead of keeping multiple pills loose inside one bottle, each tablet is stored inside its own plastic pocket with a sealed backing. The user normally presses down on the plastic section until the tablet breaks through the foil. This type of packaging can make individual doses easier to separate and allows users to see how many pills remain. However, opening it still requires the user to apply pressure with their fingers or thumb.
Research comparing different medication packages found that blister packs had a relatively fast average opening time and were generally rated favourably for ease of opening and removing medication. However, they also required greater wrist movement for some older users and participants with rheumatoid arthritis (Sormunen et al., 2013). So while blister packs avoid the twisting motion of a traditional bottle, they can create a different type of challenge.
Hinge-Cap Containers:
Some medication containers use a hinged cap instead of a cap that twists off. To open this type of package, the user holds the container and lifts a small section of the lid using their fingers. In testing, this type of container had the fastest average opening time and was rated highly for overall usability.
However, the small tab used to open the lid can still require precise finger movement. Older users and people with rheumatoid arthritis rated some parts of the design lower than younger users (Sormunen et al., 2013). This shows that reducing the amount of strength needed does not automatically make a package accessible. Dexterity and finger control matter too.
Bridge Caps:
A bridge cap works differently from a normal screw cap. It uses two parts; an inner cap and an outer cap that can spin freely. If the user simply grabs the outside of the cap and twists, the bottle will not open. Instead, the user has to place their fingers through specific openings in the outer section so they can make contact with the inner cap. Only then can the cap be turned and removed (Berels et al., 2024).
This type of design creates an extra step that can make it more difficult for a child to accidentally open the bottle. At the same time, it requires the user to understand where their fingers need to go and have enough control to grip a more specific area of the cap.
Align-to-Open Caps:
Another type of child-resistant closure is an align-to-open cap. Instead of simply twisting the lid, the user has to line up specific marks or indicators on the cap and bottle before it can be opened. This type of design adds another step that helps prevent a child from opening the package by accident.
However, it also requires the user to clearly see the alignment marks and position the cap correctly. This can create problems for people with poor eyesight, limited dexterity, or difficulty making small and precise movements (Javier & Bix, 2012). Compared with a normal screw cap, align-to-open packaging depends more on visual cues and accurate positioning, which means accessibility can be affected by things like the size of the markings, contrast, and how easy the cap is to grip.
Push-and-Turn Caps:
One of the most recognizable child-resistant designs is the push-and-turn cap. Instead of simply twisting the cap, the user has to push downward while turning it at the same time. Requiring two movements together helps prevent young children from easily opening the bottle. For someone with full hand strength and movement, this may only take a few seconds.
However, for someone with arthritis, weaker grip strength, or limited movement in their hands and wrists, completing both actions at the same time can be much harder. Traditional push-and-turn closures can require significant grip and twisting force (Berels et al., 2024). Difficulty opening these packages can even lead some users to transfer their medication into non-child-resistant containers or leave the original container unsecured.
Why Are Pill Bottles Designed This Way?
Looking at all of these packaging types brings us back to one major factor: safety.
Medication packaging cannot be designed only around being quick and easy to open. It also has to prevent accidental access, protect the medication inside, stay securely closed, and provide the user with the information they need. This is why child-resistant closures often require more than one movement or a particular way of gripping the package.
The difficulty is finding the right balance. A package that is extremely easy to open may not provide enough protection against accidental access. At the same time, a package that is extremely secure could create a barrier for someone who depends on the medication inside (Cross et al., 2020).
When Child-Resistant Becomes Adult-Resistant
Think about everything that happens when someone opens a push-and-turn bottle. One hand holds the bottle in place. The other grips the cap. The user then pushes down while twisting at the same time. For many people, these steps happen almost automatically. Now imagine doing the same thing with painful joints, limited wrist movement, reduced grip strength, or shaking hands. The same packaging suddenly becomes much harder to use.
Different packages can create different barriers. A screw cap can require too much twisting force. A blister pack can require too much pressure from the thumb. A hinge cap can require precise finger movement. A bridge cap can require the user to place their fingers in a very specific position. Because of this, accessibility is about much more than whether someone can eventually get the package open. Features such as grip, opening force, dexterity, cap size, texture, instructions, tactile feedback, and the ability to close the package again can all affect how easy a medication package is to use (Angel et al., 2022).
The Problem Is Not as Simple as Making It Easier to Open
At first, the answer might seem obvious; just make pill bottles easier to open. But doing that could create another problem. The child-resistant features are there for a reason, and removing too much resistance could make medication easier for children to access as well (Hughes et al., 2008). This means the issue is not simply about choosing between an “easy” cap and a “difficult” cap.
The real challenge is balancing accessibility and safety. Can a pill bottle remain secure while also being easier for someone with arthritis or reduced hand strength to use? Can an opening mechanism prevent accidental access without creating an unnecessary barrier for the intended user? Those are the questions that become important once we start looking at pill bottle packaging from the perspective of the person actually using it.
What Happens When We Test Them in Real Life?
So far, we have looked at how different pill packages are designed and some of the difficulties that can come with opening them. But reading about a package and actually trying to use one are two different things.
In the next blog, we are taking pill bottle packaging out of the research stage and putting it to the test. We will take a closer look at real medication packaging and compare the different closure systems being used. We will pay attention to features such as the opening mechanism, grip area, cap size, texture, instructions, and how easy the package is to open and close. Our field research will also include looking at packaging used in pharmacies and learning more about the options that are currently available.
Stay tuned!
Written By Simar Sabharwal
References
Angel, M., Bechard, L., Pua, Y. H., Thilarajah, S., Newton, C., Sorensen, A., & Clark, R. (2022). The neglected barrier to medication use: A systematic review of difficulties associated with opening medication packaging. Age and Ageing, 51(10). https://doi.org/10.1093/ageing/afac225
Berels, C., Lamsal, A., Bix, L., & Bush, T. R. (2024). Quantifying removal torque for application in a new child‐resistant and senior friendly package. Packaging Technology and Science, 38(2), 99–107. https://doi.org/10.1002/pts.2859
Budnitz, D. S., Lovegrove, M. C., & Geller, R. J. (2020). Prevention of Unintentional Medication Overdose Among Children. JAMA, 324(6), 550. https://doi.org/10.1001/jama.2020.2152
Canada, H. (2015). Frequently asked questions - consumer chemicals and containers regulations, 2001 - Canada.Ca. Canada.Ca. https://www.canada.ca/en/health-canada/corporate/about-health-canada/legislation-guidelines/acts-regulations/frequently-asked-questions-consumer-chemicals-containers-regulations-2001.html
Cross, A. J., Elliott, R. A., Petrie, K., Kuruvilla, L., & George, J. (2020). Interventions for improving medication-taking ability and adherence in older adults prescribed multiple medications. Cochrane Database of Systematic Reviews, 5(5), 1–227. https://doi.org/10.1002/14651858.cd012419.pub2
Hughes, R. A., Carr, A. J., Carr, M., & Walsh, M. (2008, January). Improving patient safety: Reducing medication errors through use of acceptable, accessible medicines packaging. ResearchGate. https://www.researchgate.net/publication/292464903_Improving_patient_safety_Reducing_medication_errors_through_use_of_acceptable_accessible_medicines_packaging
Javier, & Bix, L. (2012). Perceptions and attitudes of people with disabilities and older adults about child-resistant drug packaging. 2(2), 56–61. https://www.researchgate.net/publication/229423236_Perceptions_and_Attitudes_of_People_with_Disabilities_and_Older_Adults_about_Child-resistant_Drug_Packaging
Lisberg, R. B., Higham, C., & Jayson, M. I. V. (1983). Problems for rheumatic patients in opening dispensed drug containers. Rheumatology, 22(2), 95–98. https://doi.org/10.1093/rheumatology/22.2.95
Sormunen, E., Nevala, N., & Sipilä, S. (2013). Critical factors in opening pharmaceutical packages: A usability study among healthcare workers, women with rheumatoid arthritis and elderly women. Packaging Technology and Science, 27(7), 559–576. https://doi.org/10.1002/pts.2048
U.S. Consumer Product Safety Commission. (1995, June 15). CPSC issues rule to make packaging child-resistant, easy-to-open. U.S. Consumer Product Safety Commission. https://www.cpsc.gov/Newsroom/News-Releases/1995/CPSC-Issues-Rule-To-Make-Packaging-Child-Resistant-Easy-To-Open
U.S. Consumer Product Safety Commission. (2015). Poison prevention packaging act. U.S. Consumer Product Safety Commission. https://www.cpsc.gov/Poison-Prevention-Packaging-Act
U.S. Consumer Product Safety Commission. (2020). Special packaging (PPPA) FAQs. U.S. Consumer Product Safety Commission. https://www.cpsc.gov/FAQ/Special-Packaging-PPPA-FAQs
Safe, Smart & Sustainable Pharma Packaging. Alfa Digital Packaging, 2026.
What happens when the design that's meant to protect your health actually stands between you and your independence? Opening a pill bottle seems like a pretty simple task: you hold the bottle, twist or push the cap, take your medication, and close it again. For many, it takes just a few seconds and requires zero thought. But for someone living with arthritis, limited hand strength, tremors, or impaired dexterity, this simple routine transforms into a frustrating daily barrier to self-sufficiency (Lisberg et al., 1983).
Modern pill bottle packaging prioritizes safety above all else, using child-resistant mechanisms that demand specific coordination and significant force. Yet, in locking out children, these designs frequently lock out the very adults who rely on the medication to survive. Before exploring how we can fix this broken system, we must first examine why packaging evolved this way, how current mechanisms function, and where safety design crosses the line into exclusion.
Where Did Child-Resistant Packaging Come From?
Child-resistant packaging became much more common after concerns about young children accidentally accessing medications and other dangerous household products.
In the United States, the Poison Prevention Packaging Act of 1970 introduced requirements for child-resistant packaging. The purpose was to make certain harmful products significantly more difficult for children under five years old to open or access while still allowing adults to use the package properly (U.S. Consumer Product Safety Commission, 2015). Prescription medications usually come in child-resistant packaging, but patients can sometimes request a non-child-resistant container if needed.
However, the need for child-resistant packaging is still crucial. Accidental medication exposure can have serious consequences, especially for young children. Research has shown that people with rheumatoid arthritis can take longer to open standard screw-cap containers, and some may not be able to open them within the testing time (Sormunen et al., 2013). Additional safety features, such as flow restrictors for liquid medication and unit-dose packaging, have also been introduced to reduce the chance of children accessing dangerous amounts of medication (Budnitz et al., 2020).
Child-resistant packaging therefore has an important purpose. However, making something harder for a child to open can also make it harder for some adults.
What Types of Pill Packaging Are There?
There is more than one type of packaging used for medication, and each one requires the user to open it in a different way.
Standard Screw-Cap Bottles:
One of the simplest designs is a bottle with a standard screw cap. The user normally holds the bottle still with one hand while using the other hand to twist the cap. Even though this sounds easy, the movement requires grip strength and wrist movement.
One study involving people with rheumatoid arthritis found that standard screw-cap containers could be difficult to use. Two participants with rheumatoid arthritis were unable to open the container within the one-minute testing period, while participants with rheumatoid arthritis also took longer on average to open it. The container also required a large amount of wrist movement (Sormunen et al., 2013). This shows that even one of the simplest opening mechanisms can become challenging when a user has reduced strength or movement.
Blister Packs:
Another common form of medication packaging is the blister pack. Instead of keeping multiple pills loose inside one bottle, each tablet is stored inside its own plastic pocket with a sealed backing. The user normally presses down on the plastic section until the tablet breaks through the foil. This type of packaging can make individual doses easier to separate and allows users to see how many pills remain. However, opening it still requires the user to apply pressure with their fingers or thumb.
Research comparing different medication packages found that blister packs had a relatively fast average opening time and were generally rated favourably for ease of opening and removing medication. However, they also required greater wrist movement for some older users and participants with rheumatoid arthritis (Sormunen et al., 2013). So while blister packs avoid the twisting motion of a traditional bottle, they can create a different type of challenge.
Hinge-Cap Containers:
Some medication containers use a hinged cap instead of a cap that twists off. To open this type of package, the user holds the container and lifts a small section of the lid using their fingers. In testing, this type of container had the fastest average opening time and was rated highly for overall usability.
However, the small tab used to open the lid can still require precise finger movement. Older users and people with rheumatoid arthritis rated some parts of the design lower than younger users (Sormunen et al., 2013). This shows that reducing the amount of strength needed does not automatically make a package accessible. Dexterity and finger control matter too.
Bridge Caps:
A bridge cap works differently from a normal screw cap. It uses two parts; an inner cap and an outer cap that can spin freely. If the user simply grabs the outside of the cap and twists, the bottle will not open. Instead, the user has to place their fingers through specific openings in the outer section so they can make contact with the inner cap. Only then can the cap be turned and removed (Berels et al., 2024).
This type of design creates an extra step that can make it more difficult for a child to accidentally open the bottle. At the same time, it requires the user to understand where their fingers need to go and have enough control to grip a more specific area of the cap.
Align-to-Open Caps:
Another type of child-resistant closure is an align-to-open cap. Instead of simply twisting the lid, the user has to line up specific marks or indicators on the cap and bottle before it can be opened. This type of design adds another step that helps prevent a child from opening the package by accident.
However, it also requires the user to clearly see the alignment marks and position the cap correctly. This can create problems for people with poor eyesight, limited dexterity, or difficulty making small and precise movements (Javier & Bix, 2012). Compared with a normal screw cap, align-to-open packaging depends more on visual cues and accurate positioning, which means accessibility can be affected by things like the size of the markings, contrast, and how easy the cap is to grip.
Push-and-Turn Caps:
One of the most recognizable child-resistant designs is the push-and-turn cap. Instead of simply twisting the cap, the user has to push downward while turning it at the same time. Requiring two movements together helps prevent young children from easily opening the bottle. For someone with full hand strength and movement, this may only take a few seconds.
However, for someone with arthritis, weaker grip strength, or limited movement in their hands and wrists, completing both actions at the same time can be much harder. Traditional push-and-turn closures can require significant grip and twisting force (Berels et al., 2024). Difficulty opening these packages can even lead some users to transfer their medication into non-child-resistant containers or leave the original container unsecured.
Why Are Pill Bottles Designed This Way?
Looking at all of these packaging types brings us back to one major factor: safety.
Medication packaging cannot be designed only around being quick and easy to open. It also has to prevent accidental access, protect the medication inside, stay securely closed, and provide the user with the information they need. This is why child-resistant closures often require more than one movement or a particular way of gripping the package.
The difficulty is finding the right balance. A package that is extremely easy to open may not provide enough protection against accidental access. At the same time, a package that is extremely secure could create a barrier for someone who depends on the medication inside (Cross et al., 2020).
When Child-Resistant Becomes Adult-Resistant
Think about everything that happens when someone opens a push-and-turn bottle. One hand holds the bottle in place. The other grips the cap. The user then pushes down while twisting at the same time. For many people, these steps happen almost automatically. Now imagine doing the same thing with painful joints, limited wrist movement, reduced grip strength, or shaking hands. The same packaging suddenly becomes much harder to use.
Different packages can create different barriers. A screw cap can require too much twisting force. A blister pack can require too much pressure from the thumb. A hinge cap can require precise finger movement. A bridge cap can require the user to place their fingers in a very specific position. Because of this, accessibility is about much more than whether someone can eventually get the package open. Features such as grip, opening force, dexterity, cap size, texture, instructions, tactile feedback, and the ability to close the package again can all affect how easy a medication package is to use (Angel et al., 2022).
The Problem Is Not as Simple as Making It Easier to Open
At first, the answer might seem obvious; just make pill bottles easier to open. But doing that could create another problem. The child-resistant features are there for a reason, and removing too much resistance could make medication easier for children to access as well (Hughes et al., 2008). This means the issue is not simply about choosing between an “easy” cap and a “difficult” cap.
The real challenge is balancing accessibility and safety. Can a pill bottle remain secure while also being easier for someone with arthritis or reduced hand strength to use? Can an opening mechanism prevent accidental access without creating an unnecessary barrier for the intended user? Those are the questions that become important once we start looking at pill bottle packaging from the perspective of the person actually using it.
What Happens When We Test Them in Real Life?
So far, we have looked at how different pill packages are designed and some of the difficulties that can come with opening them. But reading about a package and actually trying to use one are two different things.
In the next blog, we are taking pill bottle packaging out of the research stage and putting it to the test. We will take a closer look at real medication packaging and compare the different closure systems being used. We will pay attention to features such as the opening mechanism, grip area, cap size, texture, instructions, and how easy the package is to open and close. Our field research will also include looking at packaging used in pharmacies and learning more about the options that are currently available.
Stay tuned!
Written By Simar Sabharwal
References
Angel, M., Bechard, L., Pua, Y. H., Thilarajah, S., Newton, C., Sorensen, A., & Clark, R. (2022). The neglected barrier to medication use: A systematic review of difficulties associated with opening medication packaging. Age and Ageing, 51(10). https://doi.org/10.1093/ageing/afac225
Berels, C., Lamsal, A., Bix, L., & Bush, T. R. (2024). Quantifying removal torque for application in a new child‐resistant and senior friendly package. Packaging Technology and Science, 38(2), 99–107. https://doi.org/10.1002/pts.2859
Budnitz, D. S., Lovegrove, M. C., & Geller, R. J. (2020). Prevention of Unintentional Medication Overdose Among Children. JAMA, 324(6), 550. https://doi.org/10.1001/jama.2020.2152
Canada, H. (2015). Frequently asked questions - consumer chemicals and containers regulations, 2001 - Canada.Ca. Canada.Ca. https://www.canada.ca/en/health-canada/corporate/about-health-canada/legislation-guidelines/acts-regulations/frequently-asked-questions-consumer-chemicals-containers-regulations-2001.html
Cross, A. J., Elliott, R. A., Petrie, K., Kuruvilla, L., & George, J. (2020). Interventions for improving medication-taking ability and adherence in older adults prescribed multiple medications. Cochrane Database of Systematic Reviews, 5(5), 1–227. https://doi.org/10.1002/14651858.cd012419.pub2
Hughes, R. A., Carr, A. J., Carr, M., & Walsh, M. (2008, January). Improving patient safety: Reducing medication errors through use of acceptable, accessible medicines packaging. ResearchGate. https://www.researchgate.net/publication/292464903_Improving_patient_safety_Reducing_medication_errors_through_use_of_acceptable_accessible_medicines_packaging
Javier, & Bix, L. (2012). Perceptions and attitudes of people with disabilities and older adults about child-resistant drug packaging. 2(2), 56–61. https://www.researchgate.net/publication/229423236_Perceptions_and_Attitudes_of_People_with_Disabilities_and_Older_Adults_about_Child-resistant_Drug_Packaging
Lisberg, R. B., Higham, C., & Jayson, M. I. V. (1983). Problems for rheumatic patients in opening dispensed drug containers. Rheumatology, 22(2), 95–98. https://doi.org/10.1093/rheumatology/22.2.95
Sormunen, E., Nevala, N., & Sipilä, S. (2013). Critical factors in opening pharmaceutical packages: A usability study among healthcare workers, women with rheumatoid arthritis and elderly women. Packaging Technology and Science, 27(7), 559–576. https://doi.org/10.1002/pts.2048
U.S. Consumer Product Safety Commission. (1995, June 15). CPSC issues rule to make packaging child-resistant, easy-to-open. U.S. Consumer Product Safety Commission. https://www.cpsc.gov/Newsroom/News-Releases/1995/CPSC-Issues-Rule-To-Make-Packaging-Child-Resistant-Easy-To-Open
U.S. Consumer Product Safety Commission. (2015). Poison prevention packaging act. U.S. Consumer Product Safety Commission. https://www.cpsc.gov/Poison-Prevention-Packaging-Act
U.S. Consumer Product Safety Commission. (2020). Special packaging (PPPA) FAQs. U.S. Consumer Product Safety Commission. https://www.cpsc.gov/FAQ/Special-Packaging-PPPA-FAQs