Vgr 100 Blue Four sided Pill Identifier

The imprint “VGR 100” is a tablet identification code used on certain sildenafil 100 mg tablets. Tablet imprints are an important part of pharmaceutical manufacturing, helping healthcare professionals, pharmacists, and regulatory authorities identify medications and distinguish between different strengths and manufacturers. Unlike the active pharmaceutical ingredient itself, the imprint is not a brand name or a scientific invention but a manufacturing identifier.

Origins of Sildenafil

The history of tablets bearing the VGR 100 imprint begins with the discovery of sildenafil citrate in the late 1980s and early 1990s. Scientists at Pfizer were initially investigating compounds that could be used to treat cardiovascular conditions such as angina pectoris and hypertension.

During clinical studies, researchers observed that one experimental compound produced an unexpected physiological effect: improved erectile function in male participants. This finding redirected the research program toward the treatment of erectile dysfunction.

In 1998, sildenafil became the first oral phosphodiesterase type 5 (PDE5) inhibitor approved for the treatment of erectile dysfunction.

Development of Tablet Imprints

As sildenafil became widely manufactured, pharmaceutical companies adopted tablet imprint systems to comply with regulatory requirements and improve medication identification.

Tablet imprints generally include combinations of letters and numbers that indicate:

• The manufacturer
• The product line
• The dosage strength
• Internal manufacturing identification

The code VGR 100 is one such imprint used on certain 100 mg sildenafil tablets. The number 100 identifies the labeled strength of the tablet (100 mg), while the letters VGR form part of the manufacturer’s identification code.

Purpose of the VGR 100 Imprint

The imprint was developed to assist with medication identification rather than marketing. Its primary functions include:

• Helping pharmacists identify tablets
• Reducing medication dispensing errors
• Assisting poison control centers in identifying unknown medications
• Supporting pharmaceutical quality control
• Facilitating regulatory inspection and product verification

Tablet imprints are an established feature of modern pharmaceutical manufacturing and are widely used for prescription and over-the-counter medicines.

Manufacturing Standards

Tablets carrying the VGR 100 imprint are manufactured using standard pharmaceutical production techniques. During manufacturing, the imprint is pressed into the tablet using precision steel dies during the compression process.

Each production batch undergoes quality-control testing to verify:

• Correct tablet weight
• Uniform dosage
• Proper hardness
• Dissolution characteristics
• Accurate imprint appearance

These procedures help ensure product consistency and compliance with pharmaceutical manufacturing standards.

Importance in Medicine Identification

Healthcare professionals rely on tablet imprints as one component of medication identification. However, an imprint alone cannot verify that a product is authentic, since counterfeit medicines may imitate legitimate markings.

Proper identification also considers:

• Tablet color
• Shape
• Size
• Packaging
• Manufacturer information
• Batch or lot number

Learn the differences between VGR 50 and VGR 100 tablet imprints, including dosage strength, identification markings, manufacturing standards, and medication verification.

Introduction

VGR 50 and VGR 100 are imprint codes found on certain tablets containing sildenafil. The primary distinction between the two products is the labeled strength of the active ingredient. Although the tablets may appear similar in shape and color, they are manufactured to contain different amounts of sildenafil.

Understanding the differences between these tablet markings can help explain how prescription medications are identified and why dosage strengths are important in pharmaceutical manufacturing.

What Do the Imprints Mean?

Tablet imprints are identification codes applied during manufacturing. They help distinguish medicines by strength, manufacturer, or product line.

For these tablets:

• VGR 50 indicates a tablet labeled as containing 50 milligrams (mg) of sildenafil.
• VGR 100 indicates a tablet labeled as containing 100 milligrams (mg) of sildenafil.

The imprint itself is intended for identification and should not be interpreted as an indication of quality or effectiveness.

Comparison of VGR 50 and VGR 100

Feature	VGR 50	VGR 100
Imprint	VGR 50	VGR 100
Labeled strength	50 mg sildenafil	100 mg sildenafil
Active ingredient	Sildenafil	Sildenafil
Prescription status	Depends on local regulations	Depends on local regulations
Purpose of imprint	Product identification	Product identification

Active Ingredient

Both tablet strengths contain the same active pharmaceutical ingredient—sildenafil. The difference lies solely in the quantity of the active ingredient present in each tablet.

Because the active ingredient is the same, both products are manufactured according to pharmaceutical quality standards applicable in the countries where they are approved for distribution.

Why Are Different Strengths Manufactured?

Many prescription medicines are produced in multiple strengths. This allows healthcare professionals to prescribe a formulation that matches an individual’s medical needs while following approved prescribing guidelines.

Different strengths are common across many therapeutic categories and help standardize pharmaceutical manufacturing and dispensing.

Physical Appearance

Depending on the manufacturer, both tablets may share similar characteristics, including:

• Comparable shape
• Similar tablet coating
• Similar color
• Similar dimensions

The imprint code is often the easiest visual feature used to distinguish one strength from another.

Identification and Verification

When identifying any prescription medication, several features should be considered together:

• Tablet imprint
• Color
• Shape
• Packaging
• Manufacturer information
• Batch or lot number

No single characteristic is sufficient to verify authenticity. When there is uncertainty about a medication’s identity, official medicine identification resources and licensed pharmacists are the most reliable sources of verification.

Manufacturing Standards

Legitimate pharmaceutical manufacturers follow strict quality control procedures to ensure:

• Accurate dosage strength
• Consistent tablet weight
• Uniform appearance
• Stable formulation
• Proper labeling

These standards help ensure that every production batch meets established pharmaceutical quality requirements.

Common Misconceptions

Higher strength does not indicate higher quality

A higher numerical strength does not mean a product is manufactured to a higher quality standard. It simply indicates that the tablet contains a greater amount of the active ingredient.

Appearance alone cannot confirm authenticity

Counterfeit medicines may closely resemble authentic products. Visual inspection should never be considered definitive proof that a medicine is genuine.

Tablet imprints are identification tools

Imprints are designed to assist with identifying medications and reducing dispensing errors. They are not intended to certify authenticity on their own.

Conclusion

VGR 50 and VGR 100 are tablet identification markings that distinguish two different labeled strengths of sildenafil tablets. The key difference is the amount of active ingredient—50 mg versus 100 mg—while both products contain the same active pharmaceutical ingredient. Tablet imprints play an important role in medication identification, but proper verification should always rely on official packaging, manufacturer information, and trusted pharmaceutical identification resources rather than appearance alone.