Pill Imprint Code Explainer: What the Letters Mean
Learn what the letters, numbers and groove on a pill usually stand for. You can also check a code you've copied for characters that are easy to misread.
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Anatomy of an imprint: tap each part
Illustrative example only. “AB 12” is not a real product, and a real code can only be matched by a database or a pharmacist.
Select a part of the tablet above to see what it typically encodes, and what it can't tell you on its own.
Typing a real code into a database? Check it here first
Enter the characters you see and we'll flag the ones that are commonly misread, with the alternates to try if your first lookup returns nothing. This never identifies a pill; it only helps you transcribe accurately.
How to use it
- Tap the letters or the numbers on the sample tablet, or pick any of the four buttons below it: letters, numbers, score line, and color and shape.
- Read the panel that opens. It explains what that part usually encodes and what it can't tell you.
- Have a real code in hand? Type the characters into the box at the bottom. The tool flags the ones people often misread and lists alternates to try.
What your result means
The tablet marked “AB 12” is invented, so nothing here points to a real medicine. The panels show the general pattern: letters tend to relate to a maker or brand, numbers tend to relate to the product or strength, and a groove often means the tablet can be split, if the label allows it.
What the tool can't do is tell you what your pill is. Federal rules require most solid oral medicines to carry an imprint that, with the size, shape and color, makes the product identifiable. Matching that code to one product still takes a database or a pharmacist.
Typing a code into a lookup? Avoid these slips
Small, worn imprints are easy to misread. The checker flags pairs such as 0 and O, 1 and I, 5 and S, and 8 and B. If your first search finds nothing, swap one flagged character at a time instead of guessing several at once.
- Check both sides of the pill. The code may be split across them.
- Type spaces and symbols the way they're printed.
- Tilt the pill under a lamp. Side light makes shallow marks easier to read.
For the full walk-through, including how the groove and the color fit in, read what the numbers and letters on a pill mean and then confirm anything you find with your pharmacist. Don't take a pill you haven't positively identified.
Frequently asked questions
What do the letters and numbers on a pill mean?
Letters often point to the maker or the brand name. Numbers often point to the specific product and sometimes the strength. Neither one identifies a pill alone. A database or pharmacist has to match the full code to one product.
Does the number on a pill tell me the dose?
Sometimes, but not reliably. Some pills print the milligrams, while others use an internal catalog number. Don't assume a number is a strength.
Does a score line mean I can split the pill?
Not automatically. Only split a scored tablet if the label or your pharmacist says it's safe for that medicine. Extended-release and coated pills often shouldn't be split.
Why does my imprint search find nothing?
A misread character is a common cause. Letters and numbers like 0 and O, or 1 and I, look alike on small tablets. Try the alternates, check both sides of the pill, and type the spacing as printed.
Does this tool identify my pill?
No. The pill in the tool is a made-up example, and the character checker only helps you copy a code accurately. A pharmacist can confirm what a pill really is.
Related guides
- What Do the Numbers and Letters on a Pill Mean?Every marked pill carries an imprint code, and it isn't random. Here's what the letters and numbers usually encode, why there's no universal decoder, and how to turn a code into an answer.
- How to Identify a Pill With No Imprint or MarkingsMost pill identifiers need an imprint code — so they fail the moment a pill is blank. Here's how to actually narrow down an unmarked pill by color, shape and photo, and how to do it safely.
- How to Identify a Pill by Color and ShapeColor and shape feel like the obvious way to identify a pill, but on their own they usually leave you with a long list, not an answer. Here's what those two details can actually tell you, and how to finish the job safely.