What Is the Blue Pill With Imprint 220

The appearance of an unidentified pill can cause significant concern, especially when the original packaging is missing. A blue pill with the imprint 220 is most frequently identified as Naproxen Sodium 220 mg. This medication is a widely used nonsteroidal anti-inflammatory drug (NSAID) available both over-the-counter (OTC) and by prescription. While "220" is a standard marking for this strength of Naproxen, understanding the clinical profile, safety warnings, and proper usage of this medication is essential for anyone who finds it in their possession.

Visual Identification and Physical Characteristics

Pill identification relies on several physical markers: imprint, color, shape, and size. The "220" marking is a direct reference to the dosage strength of the active ingredient.

Color and Coating

The most common version of this pill is a distinct light to medium blue. The blue color is often achieved using FD&C Blue No. 2, a common pharmaceutical dye. Most 220 mg Naproxen pills feature a film coating, which makes the pill easier to swallow and helps mask the naturally bitter taste of the medication.

Shape and Size

In most pharmaceutical databases, the blue 220 pill is described as oval or capsule-shaped (often referred to as a "caplet"). It typically measures approximately 12 mm in length. However, some manufacturers, such as Medline Industries, produce a round version of the 220 mg tablet that is roughly 10 mm in diameter.

Variations in Imprint

While a plain "220" is the most common imprint for generic versions (often sold under store brands like Kirkland, CVS, or Walgreens), some manufacturers add prefix letters. For instance:

L368: A blue oval pill often found in generic Aleve bottles.
G17: Another common marking for the same 220 mg strength.
I3: A round light blue pill representing the same dosage.

If the pill is a vibrant blue and has "220" on one side and is blank on the other, it is almost certainly a generic Naproxen Sodium 220 mg tablet.

What is Naproxen Sodium 220 mg?

Naproxen sodium is the salt form of naproxen, a propionic acid derivative. It belongs to the class of drugs known as nonsteroidal anti-inflammatory drugs (NSAIDs). Its primary function is to reduce hormones that cause inflammation and pain in the body.

How It Works

At the molecular level, Naproxen works by inhibiting the enzymes cyclooxygenase-1 (COX-1) and cyclooxygenase-2 (COX-2). These enzymes are responsible for the synthesis of prostaglandins—chemicals in the body that signal pain and promote inflammation. By blocking these enzymes, Naproxen effectively "turns down the volume" on the pain signals and reduces swelling at the site of injury or chronic disease.

Difference Between Naproxen and Naproxen Sodium

The "sodium" part of the name is significant. Naproxen sodium is absorbed more rapidly than plain naproxen. This allows the medication to reach peak therapeutic levels in the bloodstream faster, typically providing quicker onset of relief for acute conditions like headaches or dental pain. One 220 mg tablet of naproxen sodium contains approximately 200 mg of naproxen and 20 mg of sodium.

Common Medical Uses

The blue 220 pill is a versatile analgesic used to treat a wide range of conditions characterized by pain and inflammation.

Arthritis Management

Naproxen is a cornerstone in the treatment of various forms of arthritis, including:

Osteoarthritis: Reducing the pain and stiffness caused by the "wear and tear" of joint cartilage.
Rheumatoid Arthritis: Managing the chronic inflammation of the joint lining.
Ankylosing Spondylitis: Relieving pain in the spine and large joints.

Acute Pain Relief

Because of its long-lasting effect, it is frequently used for:

Backaches and Muscle Aches: Effective for strains, sprains, and general musculoskeletal discomfort.
Menstrual Cramps (Dysmenorrhea): Reducing the uterine contractions caused by prostaglandins.
Dental Pain: Often recommended after minor dental procedures.
Headaches: Including tension headaches and, in some cases, migraines.

Fever Reduction

Like other NSAIDs such as Ibuprofen and Aspirin, Naproxen sodium is an antipyretic, meaning it can help lower a fever during a viral or bacterial infection.

Dosage and Administration Guidelines

To ensure the safety and efficacy of the blue 220 pill, following standard dosage protocols is vital.

General Adult Dosage

For adults and children aged 12 and older, the standard instruction is to take one tablet every 8 to 12 hours while symptoms last. For the first dose, some individuals may take two tablets within the first hour for faster relief, but it is generally advised not to exceed two tablets in any 8-to-12-hour period.

Daily Limits

The maximum daily limit for over-the-counter Naproxen sodium is typically 660 mg (three 220 mg tablets) in a 24-hour period, unless otherwise directed by a physician. Exceeding this limit significantly increases the risk of severe gastric and cardiovascular side effects.

How to Take the Pill

With Food or Milk: It is highly recommended to take Naproxen with a full glass of water and food or milk. This helps protect the stomach lining from irritation.
Avoid Lying Down: Patients should avoid lying down for at least 10 minutes after taking the medication to prevent esophageal irritation.
Consistency: For chronic conditions like arthritis, the medication works best when taken regularly at the same time each day to maintain a steady level in the blood.

Potential Side Effects and Adverse Reactions

While generally safe for short-term use in healthy individuals, Naproxen sodium can cause a variety of side effects.

Common Side Effects

Most people tolerate the blue 220 pill well, but some may experience:

Dizziness or drowsiness.
Headaches.
Heartburn or indigestion.
Mild nausea or stomach pain.
Constipation or diarrhea.

Serious Side Effects

In rare cases, or with prolonged use at high doses, serious complications can occur:

Gastrointestinal Bleeding: Symptoms include black, tarry stools, or vomiting blood that looks like coffee grounds.
Kidney Issues: Changes in urination, swelling in the feet or ankles, and fatigue.
Liver Toxicity: Yellowing of the eyes or skin (jaundice), dark urine, and severe right-sided abdominal pain.
Anemia: Pale skin and shortness of breath due to slow internal blood loss.

Allergic Reactions

A small percentage of the population may be allergic to NSAIDs. Signs of a serious allergic reaction include hives, facial swelling, wheezing, or difficulty breathing. If these occur, emergency medical attention is required.

Critical Safety Warnings

The FDA requires a "Black Box Warning" for all NSAIDs, including Naproxen, regarding cardiovascular and gastrointestinal risks.

Cardiovascular Risk

NSAIDs may increase the risk of serious cardiovascular thrombotic events, including myocardial infarction (heart attack) and stroke. This risk may increase with the duration of use. People with heart disease or high blood pressure should use this medication with extreme caution. It should never be used right before or after heart bypass surgery (CABG).

Gastrointestinal (GI) Risk

NSAIDs cause an increased risk of serious GI adverse events including bleeding, ulceration, and perforation of the stomach or intestines, which can be fatal. These events can occur at any time during use and without warning symptoms. Elderly patients are at greater risk for serious GI events.

Specific Contraindications

Pregnancy: Use of Naproxen during the last 20 weeks of pregnancy can cause serious kidney problems in the unborn baby and potential complications during delivery.
Alcohol Consumption: Drinking three or more alcoholic beverages daily while taking Naproxen significantly increases the risk of stomach bleeding.
Existing Ulcers: Those with a history of stomach ulcers or inflammatory bowel disease (IBD) should generally avoid this medication.

Drug Interactions to Monitor

Naproxen can interact with a wide range of other medications, potentially altering their effectiveness or increasing toxicity.

Other NSAIDs: Taking Naproxen with Ibuprofen or Aspirin increases the risk of side effects without providing additional pain relief.
Blood Thinners (Anticoagulants): Medications like Warfarin or Coumadin combined with Naproxen drastically increase the risk of bleeding.
Blood Pressure Medications: Naproxen can reduce the effectiveness of ACE inhibitors, diuretics, and beta-blockers.
Lithium: Naproxen can increase the levels of lithium in the blood to toxic levels.
Methotrexate: It can interfere with the body’s ability to eliminate methotrexate, leading to dangerous accumulation.

Comparison: Naproxen vs. Ibuprofen

Many people wonder why they should choose the blue 220 pill (Naproxen) over the common brown 200 mg Ibuprofen (Advil/Motrin) pill.

Duration: Naproxen is long-acting. One dose lasts 8 to 12 hours. Ibuprofen is short-acting, typically requiring a dose every 4 to 6 hours.
Convenience: For chronic pain or all-day relief, Naproxen is often preferred because it requires fewer doses per day.
Potency: While both are effective, Naproxen is often considered slightly more effective for inflammatory conditions like gout or severe menstrual pain due to its steady-state blood levels.

Distinguishing Other "220" Blue Pills

While Naproxen is the most likely candidate, there are other pills with similar imprints or colors that should be ruled out.

Aleve PM: This is also a blue pill, but it typically has a different shape or an imprint like "NAP PM 220 25". It contains 220 mg of Naproxen Sodium plus 25 mg of Diphenhydramine (a sedating antihistamine). Taking this during the day could cause dangerous drowsiness.
Potassium Chloride: There are extended-release potassium supplements that are blue and may have "220" as part of a longer imprint code (e.g., "PAR C220"). These are used to treat low potassium levels and have a completely different safety profile.
Choline Magnesium Trisalicylate: A less common salicylate used for arthritis. One specific 750 mg version is blue and capsule-shaped, sometimes featuring a "220" imprint.

Crucial Safety Rule: If the pill has any letters, extra numbers, or a different shape (like a perfect circle versus an oval), it may not be Naproxen. Never ingest a pill if you are not 100% certain of its identity.

What to Do If You Find an Unknown Pill

If you find a blue pill with the imprint 220 and are unsure of its origin:

Use a Pill Identifier: Online databases like Drugs.com or WebMD offer visual search tools where you can input the color, shape, and imprint.
Consult a Pharmacist: This is the safest and most reliable method. Take the pill to a local pharmacy. Pharmacists have access to high-resolution databases and can often identify a pill in seconds.
Check Your Records: Look through your recent prescriptions or over-the-counter purchases. Naproxen is often sold in large bottles, and a single pill may have simply escaped.
Dispose of Unneeded Medication: If you cannot identify the pill or if it is expired, do not throw it in the trash where children or pets can find it. Many pharmacies and police stations have "Drug Take-Back" kiosks for safe disposal.

Summary

The blue 220 pill is almost universally identified as Naproxen Sodium 220 mg. It is a powerful, long-lasting anti-inflammatory drug that provides significant relief for arthritis, muscle aches, and menstrual pain. However, its strength comes with a responsibility to follow dosage guidelines strictly and remain aware of the potential for stomach and heart-related side effects. Always ensure that the physical characteristics—oval shape, light blue color, and "220" imprint—match the known standards for Naproxen before considering use.

FAQ

Is the blue 220 pill a narcotic?

No, Naproxen sodium is a non-narcotic, nonsteroidal anti-inflammatory drug. It is not an opioid and does not have the same addiction potential as controlled substances like oxycodone or hydrocodone.

Can I take the blue 220 pill on an empty stomach?

While you can, it is not recommended. Taking Naproxen on an empty stomach significantly increases the likelihood of gastric irritation, heartburn, and the development of stomach ulcers.

How long does it take for a blue 220 pill to start working?

Typically, Naproxen sodium starts to work within 30 to 60 minutes after ingestion. Peak levels in the blood are reached within 1 to 2 hours.

Can I take two blue 220 pills at once?

The instructions for many brands allow taking two tablets for the first dose if pain is severe. However, you should not exceed two tablets in any 8-to-12-hour window unless your doctor has specifically prescribed a higher dose (which is usually the 500 mg prescription version).

What should I do if a child accidentally swallows a blue 220 pill?

Contact Poison Control immediately at 1-800-222-1222 (in the U.S.) or seek emergency medical care. While one pill may not be fatal to an older child, it can cause severe stomach upset or other complications in toddlers.