What is the do2 pill?: A Guide to Imprint Codes and Drug Identification

October 6, 2025 •

3 min read

According to Drugs.com, a single imprint code like 'D 02' can be found on multiple, distinct medications, meaning there is no single 'do2 pill'. It is crucial to use additional identifiers like color and shape for accuracy, as this code can refer to completely different drugs with varying medical applications. This guide explains how to properly identify pills to ensure your safety.

Quick Summary

The marking 'D02' is not a medication name but an imprint code that identifies several prescription drugs. A pill's color and shape are vital for proper identification, as the code can be ambiguous and reference multiple therapies. Taking an unknown pill is extremely dangerous.

Key Points

Imprint Code, Not Drug Name: The mark 'D02' is an imprint code used by manufacturers, not the name of a medication, and can be on different drugs.
Multiple Potential Medications: The 'D02' code is found on Gabapentin capsules (for nerve pain and seizures), Lamivudine/Zidovudine tablets (for HIV treatment), and Sertraline tablets (for depression and anxiety).
Check All Features: Identifying a pill requires checking its imprint, color, and shape, as the same code can appear on different products.
Never Guess Your Medicine: Taking an unknown medication is dangerous due to risks of overdose, adverse reactions, or interference with other prescriptions.
Consult a Professional: A pharmacist or doctor can provide accurate identification, confirm medication and dosage, and verify its safety for you.
Avoid Unverified Sources: Be cautious when buying medicines online, as unregulated sites may sell counterfeit or unsafe drugs.

What the "D02" Imprint Could Mean

The imprint code "D 02" or "D02" is not a brand name or a single drug, but rather an identifier used by manufacturers. Because this imprint can appear on different medications, relying solely on the code is unreliable for identification. Always consider the pill's color and shape as well. While online pill identifiers can assist, a pharmacist or doctor should confirm the drug.

Potential Medications with "D02" Imprints

Several medications are known to have the "D02" imprint:

Gabapentin (100 mg): Often a white, oblong capsule with "D" on one half and "02" on the other. Gabapentin is an anticonvulsant used for seizures and nerve pain.
Lamivudine and Zidovudine (150 mg / 300 mg): This is typically a white, oblong capsule with "D 02". This combination is an antiviral used to treat HIV-1 infection. Note that the size (18mm) is different from the Gabapentin capsule (16mm).
Sertraline Hydrochloride (50 mg): Identified as a blue, oval tablet with the imprint "L U D02". Sertraline is an SSRI antidepressant prescribed for conditions like depression, anxiety, and OCD.

The Critical Importance of Proper Pill Identification

Taking an unknown pill is hazardous and can have severe, even fatal, consequences. The ambiguity of imprints like "D02" heightens these risks.

Misidentification: You might mistakenly take a drug intended for a different condition, leading to ineffective or harmful treatment.
Overdose and Reactions: An unknown pill could have a dangerous dosage or interact adversely with existing medications or health conditions.
Counterfeit Drugs: Pills from unverified sources, especially online, could be counterfeit and contain incorrect or harmful substances.

How to Safely Identify an Unknown Pill

To ensure safety, follow these steps if you encounter an unknown pill, including one with a "D02" imprint:

Utilize Online Resources: Use reputable online pill identifier tools from sources like Drugs.com, WebMD, or the FDA. Input the imprint, color, and shape to narrow down possibilities.
Consult a Pharmacist: Pharmacists are excellent resources for accurate identification using professional databases.
Review Prescriptions: If the pill might be yours, check your prescription records or the original bottle for verification.
Avoid Making Assumptions: Never assume you know a pill's identity, especially if it's not from a confirmed source.
Do Not Take It: If you cannot definitively identify the pill, do not consume it. Dispose of it safely following FDA guidelines.

Comparison Table: Common Medications with "D02" Imprints


Feature	Gabapentin 100 mg	Lamivudine and Zidovudine	Sertraline 50 mg
Imprint Code	D 02	D 02	L U D02
Color	White	White	Blue
Shape	Capsule/Oblong (16mm)	Capsule/Oblong (18mm)	Oval (10mm)
Drug Class	Gamma-aminobutyric acid analog	Antiviral combination	Selective Serotonin Reuptake Inhibitor (SSRI)
Common Uses	Epilepsy, nerve pain, seizures	HIV-1 infection	Depression, anxiety, OCD, PTSD

Conclusion

The imprint "D02" does not denote a single medication, but rather an identifier used on various drugs like Gabapentin, Lamivudine/Zidovudine, and Sertraline. Relying solely on this code for identification is dangerous and can lead to severe health consequences. Always consider the pill's color and shape and use reliable identification methods such as online tools and consulting healthcare professionals. Prioritize your safety by accurately verifying your medication. For information on safe online pharmacies, visit the NABP at https://safe.pharmacy/buy-safely/.

Frequently Asked Questions

There is no single 'do2 pill.' The marking 'D02' is a manufacturer imprint code found on several different prescription drugs, including Gabapentin, Lamivudine and Zidovudine, and Sertraline, depending on the pill's color and shape.

To identify a pill with a 'D 02' imprint, you must also consider its physical characteristics, such as color and shape. Use a reliable online pill identifier tool or consult with a pharmacist to match the complete description accurately and confirm the drug.

No. While a white, oblong capsule with 'D 02' is Gabapentin 100 mg, a different white, oblong capsule of a different size might be the antiviral medication Lamivudine and Zidovudine, which also uses a 'D 02' imprint.

No. The blue, oval pill with 'L U D02' is Sertraline Hydrochloride, an antidepressant, and is distinct from the white pills. The 'D02' portion of the imprint is used by different manufacturers for entirely different drugs.

Do not take it. If you find a loose pill with an unfamiliar imprint, consult a pharmacist or physician for proper identification. If you cannot identify it, the safest course of action is to dispose of it securely according to the FDA's guidelines.

No, there is no relation. 'DO2' is a medical abbreviation for Oxygen Delivery, a physiological measure used in critical care. The 'D02' pill imprint is a completely separate pharmaceutical identifier.

Taking an unidentified pill can lead to serious risks, including allergic reactions, life-threatening drug interactions with other medications, accidental overdose, or receiving no therapeutic effect for an illness.