Quick answer: a medicine lock box keeps prescriptions and over-the-counter medicines behind a combination instead of just up high. The CDC says to keep medicines where young children can’t reach or see them [2], and the FDA says to store opioids out of sight and reach of children and teens [1]. A box with a resettable combination works for most homes; pick a fridge-safe one if a medicine needs to stay cold, and a box with a cable for travel. None of these is a safe: treat it as a barrier, and still keep it out of reach.
At a glance
- Where medicines go
- Where young children can't reach or see them [2]
- Opioids
- Out of sight and reach of children or teens; don't share them [1]
- After each dose
- Lock the safety cap and put the medicine back in its storage spot [2]
- Leftover medicines
- Take-back sites, take-back events or mail-back envelopes [3]
- Recalls in this category
- Rx Locker (2012) and Helix metal drug chests (2022) [5][6]
How we chose
We picked these boxes from what their makers publish about each one. We didn’t test them ourselves.
- A lock you set yourself. Every pick uses a combination you choose, so there’s no key to lose or leave lying around.
- Honest security claims. We favored makers that say plainly what their boxes can and can’t do. Lockabox says its boxes aren’t high-security or tamper-proof [8], and Vaultz says its case isn’t impenetrable [10].
- Interior size. Medicine bottles, inhalers and pens come in different shapes, so we list interior dimensions where the maker gives them.
- No fingerprint locks. The CPSC has announced several recalls of biometric gun safes whose fingerprint readers could let unauthorized people open them, including Fortress safes in 2023 [7]. That’s a different product, but it’s a reason we stuck to combination locks here.
- No recall. We searched the CPSC recall database on November 6, 2026, for each brand and model and for “medicine,” “lockable” and “lock box” [4]. Two medicine containers have been recalled because their locks could be opened [5][6]; neither is on this list.
Our picks
Best for: Medicines that live in the refrigerator, or a whole household's supply
Lockabox One 10L Medication Lock Box
It's the roomiest pick, with a clamshell lid and a 3-digit combination. Lockabox says the polycarbonate box is safe in the fridge or freezer, and the inside is smooth, with no joins around the base, so it wipes clean [8].
- Outside 12 x 8 x 6.6 inches; inside 11.1 x 7.6 x 6.3 inches [8]
- Door opening 6.9 x 6 inches [8]
- 3-digit combination lock; arrives assembled [8]
- Shatter-resistant, BPA-safe polycarbonate; fridge and freezer safe [8]
- 2-year warranty [8]
Safety check: No CPSC recall found for Lockabox (checked 2026-11-06).
Watch out: Lockabox says it's a deterrent, not a high-security or tamper-proof product [8]. Someone could carry the whole box away, and it has no tether point.
See it on Amazon → We chose it from specs and safety records; we haven't tested it ourselves.
Best for: A small fridge shelf or a nightstand drawer
Lockabox Mini 3L Lock Box
It's Lockabox's smallest box: the same 3-digit combination and clamshell design as the One in a footprint under 9 inches long. Lockabox says it's safe in refrigerators and freezers down to -80°C [9].
- Outside 8.8 x 6.1 x 4.7 inches; inside 7.5 x 5.4 x 4.3 inches [9]
- Door opening 4.4 x 4.1 inches [9]
- 3-digit combination lock [9]
- Polycarbonate; stackable [9]
- 2-year warranty [9]
Safety check: No CPSC recall found for Lockabox (checked 2026-11-06).
Watch out: The 4.1-inch-high door opening limits tall bottles. Lockabox notes the same deterrent-only limits as the One [9].
See it on Amazon → We chose it from specs and safety records; we haven't tested it ourselves.
Best for: A flat, organized case for a closet shelf or drawer
Vaultz Locking Medicine Storage Box
It's a slim combination-lock case with elastic dividers to keep bottles and supplies from sliding around. Vaultz says it works with its double-loop tether (sold separately), so you can attach it to something fixed [10].
- 3.75 x 11.88 x 5.25 inches [10]
- Combination lock [10]
- Elastic dividers inside [10]
- Fits the Vaultz VZ00595 double-loop tether, sold separately [10]
Safety check: No CPSC recall found for Vaultz (checked 2026-11-06).
Watch out: Vaultz calls it an inexpensive security product that isn't impenetrable, and says to keep it out of children's reach [10].
See it on Amazon → We chose it from specs and safety records; we haven't tested it ourselves.
Best for: Tall bottles and bulky supplies
Vaultz Locking Medicine Box, Large (VZ01218)
Its 5-inch interior height takes taller bottles than the other boxes here. Vaultz builds it with a wood-core body, chrome-steel corners and aluminum rails, a soft felt lining, and a 3-digit combination you set yourself [11].
- Outside 6.14 x 5.98 x 9.13 inches; inside 5 x 5 x 8 inches [11]
- Resettable 3-digit combination lock [11]
- MDF core, chrome-steel corners, aluminum rails [11]
- Felt-lined interior [11]
Safety check: No CPSC recall found for Vaultz (checked 2026-11-06).
Watch out: Vaultz's page doesn't say it's fridge-safe or list a tether point for this box [11], so it belongs on a dry, high shelf.
See it on Amazon → We chose it from specs and safety records; we haven't tested it ourselves.
Best for: Hotel rooms, dorms and trips
Master Lock 5900D Portable Personal Safe
A cable lets you loop it around something fixed or carry it like a handle. You set your own combination, and Master Lock says the case is water-resistant with shock-absorbing foam inside [12].
- Outside about 2.3 x 9.5 x 4.9 inches [12]
- Set-your-own combination [12]
- Cable to lock it to a fixed object [12]
- Water-resistant; foam lining; limited lifetime warranty [12]
Safety check: No CPSC recall found for this model (checked 2026-11-06).
Watch out: Master Lock lists the inside at only 1-1/4 inches high [12], so it holds blister packs and small bottles, not full-size ones. It's sold as a phone and passport safe.
See it on Amazon → We chose it from specs and safety records; we haven't tested it ourselves.
Where to put the box
- Out of reach and out of sight, even when locked. The CDC’s advice is to keep medicines where young children can’t reach or see them [2]. A locked box on a high shelf gives you two barriers.
- Put medicines back every time. The CDC says to lock the safety cap and return the medicine to its storage spot after each use [2].
- Think about visitors and older kids. The FDA’s opioid advice covers teens, not just toddlers, and says not to share opioid pain medicines [1].
- Keep the combination to yourself. Change it from the factory setting and don’t write it on the box.
Getting rid of what you don’t need
A lock box works best when it isn’t full of old prescriptions. The FDA says to dispose of unused opioids safely once there’s no medical need for them [1]. Its take-back options include year-round drop-off sites at some retail, hospital and clinic pharmacies and law enforcement facilities, DEA National Prescription Drug Take Back events, and mail-back envelopes, which some pharmacies give out free [3].
Sources
- U.S. Food and Drug Administration: Keep him safe in your home. Dispose of unused opioids (Remove the Risk)
- Centers for Disease Control and Prevention: Medication Safety and Your Health
- U.S. Food and Drug Administration: Drug Disposal: Drug Take-Back Options
- U.S. Consumer Product Safety Commission: Recalls
- CPSC: Locker Brand Recalls Rx Lockers Due to Failure Leading to Allowing Unauthorized Access to Medicine Containers (2012)
- CPSC: Maped Helix USA Recalls Metal Lockable Drug Chests Due to Risk of Poisoning (2022)
- CPSC: Fortress Safe Announces Recall of Biometric Gun Safes (2023)
- Lockabox: Lockabox One 10L Medication Lock Box (maker's listing on Amazon)
- Lockabox: Lockabox Mini 3L Lock Box (maker's listing on Amazon)
- Vaultz: Locking Medicine Storage Box, Combo Lock (maker's listing on Amazon)
- Vaultz: Vaultz Locking Medicine Box (Large)
- Master Lock: 5900D Set Your Own Combination Portable Personal Safe
Common questions
Do I need a lock box for medicine?
The CDC says to keep medicines where young children can't reach or see them, and the FDA says to store opioids out of sight and reach of children and teens. A lock box adds a barrier when a high shelf isn't enough, for example with teenagers, visitors or a shared home.
Can a medicine lock box go in the refrigerator?
Some can. Lockabox says its One and Mini boxes are made of polycarbonate that's safe in refrigerators and freezers. Check the maker's temperature range before you put a box in the fridge.
Are medicine lock boxes tamper-proof?
Usually not. Lockabox says its boxes are a deterrent, not high-security or tamper-proof, and Vaultz calls its medicine case an inexpensive security product that isn't impenetrable. Keep the box out of reach too.
How do I get rid of medicines I no longer need?
The FDA lists drug take-back options: year-round drop-off sites at some pharmacies and law enforcement facilities, DEA National Prescription Drug Take Back events, and mail-back envelopes.