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What Pill is C55? Identifying Medications by Imprint, Shape, and Color

3 min read

A single imprint code on a pill, such as 'C55,' is not enough to accurately identify a medication, as multiple drugs can share the same code but differ in color, shape, and size. This guide will detail the several different medications that may have the C55 imprint and explain how to use all available physical characteristics for proper identification.

Quick Summary

The C55 imprint is used for multiple prescription medications, including cardiovascular drugs like Lisinopril and Tribenzor, and neurological medications such as Paroxetine and Donepezil. Correct identification requires verification of the pill's color, shape, and size in addition to the imprint to avoid dangerous mix-ups.

Key Points

  • Multiple Medications: The C55 imprint can identify multiple different prescription drugs, so color, shape, and size are necessary for accurate identification.

  • Lisinopril: A brown, oval C55 pill is Lisinopril 20 mg, an ACE inhibitor for heart conditions.

  • Paroxetine: A yellow, oval C55 pill is Paroxetine 10 mg, an SSRI for mood and anxiety disorders.

  • Donepezil: A yellow, round C55 pill is Donepezil 10 mg, a cholinesterase inhibitor for Alzheimer's disease.

  • Tribenzor: A red, round C55 pill is Tribenzor, a combination medication for high blood pressure.

  • Consult a Professional: Always confirm medication identity with a pharmacist or doctor before taking it to ensure safety.

  • Never Self-Prescribe: Taking an unidentified pill is extremely dangerous and can lead to severe health complications.

In This Article

Why the C55 Imprint Alone Is Not Enough

Many people find a pill and rely solely on the unique code or imprint stamped on it for identification. However, the same imprint can be used by different pharmaceutical manufacturers for various drugs. To correctly and safely identify a medication, it is critical to use all available physical characteristics, including:

  • Imprint Code: The alphanumeric code on the pill.
  • Color: The hue of the tablet or capsule.
  • Shape: The geometry, such as round, oval, or capsule-shaped.
  • Size: The pill's approximate diameter or length.

Failing to use all of these factors can lead to dangerous medication errors, as the different C55 pills treat vastly different and serious conditions, from heart failure to Alzheimer's disease.

Potential C55 Medications: Detailed Identification

Here is a breakdown of the most common medications associated with the C55 imprint, categorized by their distinct appearance.

Brown, Oval C55 Pill: Lisinopril

This is a brown, oval-shaped tablet with the imprint C55 on one side.

  • Active Ingredient: Lisinopril 20 mg.
  • Drug Class: Angiotensin Converting Enzyme (ACE) Inhibitor.
  • Primary Uses: Prescribed to treat high blood pressure (hypertension), heart failure, and improve survival after a heart attack.
  • Key Action: It works by relaxing blood vessels, allowing blood to flow more easily.

Yellow, Oval C55 Pill: Paroxetine Hydrochloride

This medication is a yellow, oval-shaped tablet with the imprint C55.

  • Active Ingredient: Paroxetine Hydrochloride 10 mg.
  • Drug Class: Selective Serotonin Reuptake Inhibitor (SSRI).
  • Primary Uses: Used to treat a range of mood and anxiety disorders, including generalized anxiety disorder (GAD), panic disorder, and major depressive disorder. It is also used to manage hot flashes associated with menopause.
  • FDA Warning: This medication carries a boxed warning regarding the increased risk of suicidal thoughts and behaviors in young people.

Yellow, Round C55 Pill: Donepezil Hydrochloride

This is a yellow, round tablet imprinted with C55.

  • Active Ingredient: Donepezil Hydrochloride 10 mg.
  • Drug Class: Cholinesterase Inhibitor.
  • Primary Uses: This medication is used to treat symptoms of Alzheimer's disease and is not a controlled substance.
  • Key Action: It works by increasing the amount of a certain natural substance in the brain, helping to improve memory and awareness.

Red, Round C55 Pill: Tribenzor

This refers to a red, round tablet with the C55 imprint.

  • Active Ingredients: Amlodipine 10 mg / Hydrochlorothiazide 12.5 mg / Olmesartan 40 mg.
  • Drug Class: Miscellaneous Antihypertensive Combination.
  • Primary Uses: Used to treat high blood pressure by combining three different medications with unique mechanisms of action.

Comparison of C55 Pills

To avoid confusion, the following table provides a quick side-by-side comparison of the common medications found with the C55 imprint.

Characteristic Lisinopril 20 mg Paroxetine 10 mg Donepezil 10 mg Tribenzor 10/12.5/40 mg
Color Brown Yellow Yellow Red
Shape Oval Oval Round Round
Size 8mm 8mm 9mm 10mm (some variations exist)
Drug Class ACE Inhibitor SSRI Cholinesterase Inhibitor Antihypertensive Combination
Primary Use High blood pressure, heart failure, post-heart attack Depression, anxiety disorders, hot flashes Alzheimer's disease High blood pressure

What to Do If You Find an Unidentified Pill

If you find a pill with the C55 imprint or any other unknown medication, here are critical steps to follow:

  1. Do not consume the pill. Never take a medication that has not been prescribed to you or that you cannot positively identify.
  2. Use all identifying features. Carefully note the imprint, color, shape, and size before attempting to identify it.
  3. Use a reputable pill identifier. Use resources like Drugs.com to cross-reference the characteristics.
  4. Consult a professional. The safest course of action is always to speak with a pharmacist or your doctor for a definitive identification.
  5. Properly dispose of the medication. If you cannot identify the pill, or it is no longer needed, dispose of it safely. Many pharmacies offer medication take-back programs.

Conclusion

The C55 imprint does not correspond to a single medication but can denote several different prescription drugs, each with a distinct color, shape, and therapeutic purpose. Using all physical characteristics is crucial for accurate identification. Due to the severe health risks associated with misidentifying medication, it is essential to consult a healthcare professional for verification and to prioritize safety over assumption. This information is for identification purposes only and is not a substitute for medical advice.

Frequently Asked Questions

If the pill is brown, oval, and has the C55 imprint, it is identified as Lisinopril 20 mg, a medication primarily used for heart failure and high blood pressure.

Yes, a yellow, oval pill with the C55 imprint is Paroxetine 10 mg, a Selective Serotonin Reuptake Inhibitor (SSRI) used to treat various anxiety disorders and depression.

Yes, a yellow, round pill with the C55 imprint is Donepezil Hydrochloride 10 mg, a cholinesterase inhibitor used to treat Alzheimer's disease.

A red, round pill with the C55 imprint is Tribenzor, a combination medication (amlodipine/hydrochlorothiazide/olmesartan) for high blood pressure.

No, you should never take a pill you find unless you have a prescription for it and have confirmed its identity with a healthcare professional. Relying on an incomplete identification is unsafe.

It is dangerous because several different medications, each treating different conditions, share the same C55 imprint. A mix-up could lead to serious medical harm or prevent you from taking the correct medication.

Do not take it. Use a reputable pill identifier tool by entering the imprint, color, and shape, then consult a pharmacist or doctor. If you cannot identify it, dispose of it safely.

References

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Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.