When you’re not sure what a pill is, there are ways to find out. Online tools and resources can help you identify pills and find out what medication they contain. Please keep reading to learn more about pill identification or how to identify an unknown medication.
When Should You Use a Pill Identifier Tool?
You need pill identification whenever you encounter medication of uncertain origin or identity. Several common scenarios require immediate verification before taking any substance.
Finding Loose Pills at Home
Pills fall from bottles, medication organizers, or pockets regularly. Without proper labeling, these loose medications become unidentifiable and potentially dangerous.
Verifying Mixed-Up Prescriptions
People managing multiple medications often face confusion when pills look similar. Verification prevents taking the wrong medication or incorrect dosage.
Confirming Pharmacy Refills That Look Different
Pharmacies switch between generic manufacturers frequently. The same active ingredient appears in different colors, shapes, or sizes depending on the manufacturer.
According to pharmacy error studies, approximately 1.5% of prescriptions contain errors. Visual verification adds a critical safety check.
Identifying Pills Found in Teen Belongings
Parents discovering unknown pills need rapid identification to assess safety risks. Immediate verification helps determine whether professional intervention is necessary.
How to Identify an Unknown Pill: Step-by-Step
Accurate identification depends on the quality of information you enter. Follow these steps for the best result.
Step 1: Find the Imprint Code
The imprint code is the most important piece of information for pill identification. It consists of letters, numbers, or a combination of both stamped directly onto the pill’s surface. Check both sides — some medications have markings on the front and back.
Federal regulations (21 CFR Part 206) require imprint codes on most prescription and OTC solid oral dosage forms sold in the United States. This means most FDA-approved pills can be identified by their imprint alone, without needing color or shape information.
Use a magnifying glass for small pills where the markings are difficult to read. Lighting makes a difference — natural light or a direct lamp often reveals imprints that look blank at first glance.
Step 2: Note the Shape
Common pill shapes include: round, oval, oblong, capsule, triangle, square, rectangle, diamond, pentagon, and hexagon. Shape narrows results significantly when combined with an imprint.
Step 3: Note the Color
Pill colors vary by manufacturer and can shift slightly between generic versions of the same drug. Enter the color that most closely matches, and if your results seem off, try removing the color filter and relying on imprint and shape alone.
Step 4: Enter the Information Into a Pill Identifier Tool
Use one of the tools listed below. Start with the imprint code. If the imprint alone doesn’t return a clear result, add shape and color to narrow it down.
Step 5: Verify the Result
Once the tool returns a match, compare the listed details — drug name, dose, manufacturer — against the physical pill. Most tools include images. If the image matches closely, you have a strong identification.
Always verify findings with a pharmacist or your healthcare provider before taking any identified medication. Pill identifier tools are accurate for FDA-approved medications, but they are not infallible, and they do not cover all pills.
What Are The Best Free Pill Identifier Tools
These are the most reliable, widely used pill identification resources. All are free, require no login, and are regularly updated with FDA-approved medications.
WebMD Pill Identifier Search by imprint code, color, or shape. Includes drug images and covers both prescription and OTC medications. One of the most visited and trusted pill identification databases online.
Drugs.com Pill Identifier Identifies over 11,500 medications by imprint, shape, or color. Includes historical data for discontinued drugs, photos, and detailed drug information. Also available as a mobile app.
FDA DailyMed The official drug labeling database from the U.S. National Library of Medicine. Best for verifying official drug information once you’ve identified a pill via another tool.
RxList Pill Identifier A physician-reviewed tool that allows searches by imprint, color, and shape. Useful for confirming results from other databases.
Pharmacist (always an option) Your local pharmacist can identify pills using their drug database and your medication records — and they do this routinely. If online tools don’t return a clear result, call or visit a pharmacy.
How Do You Use Online Pill Identifiers Safely?
Step 1: Document All Physical Characteristics
Gather all visible characteristics of the pill. Note the imprint code exactly as it appears, including spacing and special characters.
Record the pill’s shape, color or color combination, and form. Check for score lines and note their pattern.
Step 2: Enter Information Into Identification Tools
Visit a reputable pill identification website like the FDA’s tool, Poison Control’s identifier, or Medscape’s database. Input the documented characteristics.
Review all results if the search returns multiple options. Compare photos carefully to ensure correct identification.
Step 3: Verify Results With Healthcare Professionals
Always verify findings with a pharmacist or doctor before taking any identified medication. Call your pharmacy’s medication information line or your healthcare provider’s office.
If someone has ingested an unknown pill, contact Poison Control immediately at 1-800-222-1222. They provide free, confidential guidance 24/7.
How to Read an Imprint Code
The imprint code consists of letters, numbers, or logos stamped onto a pill to identify it. A few things to know:
Letters + numbers together are the most common format (e.g., “L484” is 500 mg acetaminophen — the active ingredient in Tylenol). Enter the full string exactly as it appears.
Logos are symbols or manufacturer marks rather than letters or numbers. Many pill identifier tools let you filter by logo. If there is a logo alongside letters or numbers, enter just the alphanumeric portion and note the logo separately.
Scored tablets have a line across the center — this is a dosing feature (indicating the pill can be split), not part of the imprint code.
Two-sided imprints: if a pill has markings on both sides, enter one side first. If results are unclear, try the other side, or combine them using an asterisk (e.g., “L*480”) in databases that support it.
What Are the Dangers of Taking Unknown Pills?
Why Prescription Drug Misuse Is Dangerous
Taking prescription medications without medical supervision is dangerous and illegal. Physicians base prescribing decisions on your medical history, current conditions, and other medications.
Prescription drugs obtained from friends, family, or illegal sources lack medical oversight. The National Institute on Drug Abuse reports prescription drug misuse contributes to thousands of overdose deaths annually.
The Myth That Prescription Drugs Are “Safer” Street Drugs
Many people mistakenly believe prescription medications are inherently safe because doctors prescribe them. These drugs cause serious harm when taken without medical supervision or in incorrect doses.
Opioid pain medications like OxyContin and Vicodin carry significant overdose risks. Benzodiazepines like Xanax and Valium cause dangerous withdrawal symptoms. Stimulants like Adderall and Ritalin trigger cardiovascular events when misused. Anticonvulsant medications, such as Gabapentin, can also be dangerous when combined with other drugs or alcohol.
Special Medication Risks for Young Children
Children between 18 and 36 months face especially high risks from unknown medications. At this developmental stage, children explore by mouthing objects.
A single pill can be fatal to a small child. The American Association of Poison Control Centers reports medication exposures rank among the most common poisonings in children under five.
Antidepressant Medications
Antidepressants cause seizures and abnormal heart rhythms when taken without medical supervision. These medications require careful dosing adjustments and side effect monitoring.
Starting antidepressants without medical guidance triggers dangerous interactions with other medications or underlying health conditions.
Frequently Asked Questions About Pill Identification
What do the numbers or letters on a pill mean?
The numbers and letters form the imprint code identifying the medication’s active ingredient, dosage strength, and manufacturer. The FDA requires this code on most prescription and over-the-counter drugs to prevent counterfeiting and ensure patient safety. You can use this code with pill identifier tools to determine exactly what medication you have.
Can different medications have the same imprint code?
No, different medications cannot have identical imprint codes. However, the imprint code alone doesn’t fully identify a pill. You must also consider shape, color, form, and scoring. The complete combination creates a unique identifier distinguishing every legally manufactured medication.
What should I do if a pill has no imprint code?
Pills without imprint codes may be dietary supplements, which the FDA doesn’t regulate as strictly as medications. They could also be illegally manufactured drugs imported from other countries. If you find a pill without an imprint, don’t take it. Contact a pharmacist or Poison Control if you need identification help or if someone has ingested it.
What is the line in the middle of some tablets?
The line is a score mark allowing you to split the tablet into smaller doses if your doctor instructs you to do so. Never split tablets without medical guidance, as not all medications are safe to divide. The scoring pattern also serves as an identifying characteristic when using pill identification tools.
Are pill identifier apps as accurate as official databases?
Pill identifier apps using photo recognition can be helpful but aren’t always as accurate as official databases like the FDA’s tool or Poison Control’s identifier. Lighting, photo quality, and pill condition affect app accuracy. Always verify app results against an official database or with a pharmacist before taking any medication.
How should I store or dispose of unknown pills?
Store unknown pills in a secure location away from children and pets while working to identify them. Never throw pills in the trash where children or animals might find them. Once identified, dispose of unwanted medications properly through pharmacy take-back programs or following FDA disposal guidelines.
Getting Help for Prescription Medication Addictions
If you’re using pill identifiers to verify medications obtained without a prescription, you may be experiencing prescription drug misuse or addiction. This behavior pattern indicates a substance use disorder requiring professional treatment.
Discover Recovery offers specialized treatment programs for prescription drug addiction in Long Beach, Washington. Our medical professionals provide customized care addressing both physical dependence and underlying factors contributing to substance misuse.
Contact Discover Recovery today to discuss treatment options and verify insurance coverage. Our team helps you safely stop prescription drug abuse and reduce risks of overdose, health complications, or legal consequences.
Reviewed By: Dr. Kevin Fischer, M.D.
Kevin Fischer, MD is an experienced leader in the fields of Internal Medicine and Addiction Medicine. He works with patients suffering from Substance Use Disorder to evaluate their comprehensive health needs and prescribe Medication-Assisted Treatment (MAT). In addition, he mentors aspiring health professionals and leads collaborative care through team-based medical models. He also directs treatment strategies and streamlines clinical protocols for effective substance use recovery.