---
title: "injection pen — Niche Verdict: Launch it (73/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/health-household/injection-pen"
last_updated: "2026-07-14T07:25:55.293Z"
locale: en
meta:
  description: "injection pen clears our launch bar: a $974K/yr market growing +65.4% this quarter with returns at 2.1%."
  "og:description": "injection pen clears our launch bar: a $974K/yr market growing +65.4% this quarter with returns at 2.1%."
  "og:title": "injection pen — Niche Verdict: Launch it (73/100) | Amazon United States - Flapen"
---

Back to Flapen home

# **injection pen**

**Launch it**

A $974K/yr market growing +65.4% this quarter with returns at 2.1% — clears our launch bar.

Market size 77Growth 77Conversion 29Competition 85Returns 74Price range 61Avg price 95Brand share 58Review moat 98Quality gap 81

**Review moat**

**Incredible****39.67**

avg incumbent reviews — the moat a new listing must climb

**Avg price**

**Incredible****$44.54**

avg listing price — sweet spot $15–$100

**Competition**

**Great****30%**

top-5 click share — an open shelf

**Quality gap**

**Great****4.2★**

avg incumbent rating — lower means beatable quality

**Market size**

**Great****$974K**

$974K/yr · 934K searches

**Growth**

**Great****+65.4%**

90-day search growth — must beat 0% to launch

**Returns**

**Good****2.1%**

return rate — above 6% kills the launch gate

**Price range**

**Good****$15.85–$153.94**

cheapest to priciest tracked listing — scored on the share inside $15–$100

**Brand share**

**Good****70%**

top-5 brand share — brands hold most of the demand

**Conversion**

**Okay****2.3%**

search→purchase rate — share of searches ending in a sale

## **Competition**

Clicks spread well past the top 5 (30% combined) — an open shelf where new products get seen.

**Brands**

**22 **▲rising

**Sellers**

**101**

**Top-5 brand share**

**70%**

**Open market**

**24%**

- Generic38% - VILKTDD11% - GXZ Health8% - EvoLabTech7% - ENDURAPEP7% - Ferissvo6%

## **Product shelf**

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%3%$29K6%$58K9%$88K12%$117K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 64 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![V2 Reusable Research Peptide Pen Injector (Blue) (1 3ml/cc Cart included)](https://m.media-amazon.com/images/I/51zudTNQa5L.jpg)**V2 Reusable Research Peptide Pen Injector (Blue) (1 3ml/cc Cart included)**Generic**$24.90**4.0★74 rev](https://www.amazon.com/dp/B0FYQVQ6RS) [2![GXZ Health Vector V2 Reusable Injection Pen Set 5 Pens with 5 Bonus Cartridges 60 Unit Capacity Assorted Colors (Blue Red Black Purple & Silver)](https://m.media-amazon.com/images/I/31gQbjGInYL.jpg)**GXZ Health Vector V2 Reusable Injection Pen Set 5 Pens with 5 Bonus Cartridges 60 Unit Capacity Assorted Colors (Blue Red Black Purple & Silver)**GXZ Health**$99.64**4.0★26 rev](https://www.amazon.com/dp/B0GZ8Q5GC9) [3![60 Unit Reusable Research Pen Injector with Protect Case and 2Pcs 3ml Cartridges (Blue)](https://m.media-amazon.com/images/I/41l15b+IwBL.jpg)**60 Unit Reusable Research Pen Injector with Protect Case and 2Pcs 3ml Cartridges (Blue)**VILKTDD**$40.83**4.3★34 rev](https://www.amazon.com/dp/B0GWH1FN3K) [4![60 Units Reusable Peptide Pen Injector Clear Scale and Protect Case Compatible with 3ML for Home and Travel Use(Gold)](https://m.media-amazon.com/images/I/41vpglB37VL.jpg)**60 Units Reusable Peptide Pen Injector Clear Scale and Protect Case Compatible with 3ML for Home and Travel Use(Gold)**FJNATINH**$39.78**3.9★19 rev](https://www.amazon.com/dp/B0GTTM7YYM) [5![Pink 60 Unit V2 Reusable Pen Injector and Cartridge Filing Block](https://m.media-amazon.com/images/I/31f5BzajyvL.jpg)**Pink 60 Unit V2 Reusable Pen Injector and Cartridge Filing Block**Generic**$25.84**3.6★29 rev](https://www.amazon.com/dp/B0FMWVF89V)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![Reusable Pen Compatible with 3ml Pen Cartridge](https://m.media-amazon.com/images/I/41T5yeDm2fL.jpg)**Reusable Pen Compatible with 3ml Pen Cartridge**Leigeobei**$44.06**5 rev2w ago](https://www.amazon.com/dp/B0H1C22H93) [![60 Unit Peptide Pen Reusable Injector Metal Pens with Travel Case Universal Compatibility for Home Work Outdoor Activities (Green)](https://m.media-amazon.com/images/I/31hMGF4Y0lL.jpg)**60 Unit Peptide Pen Reusable Injector Metal Pens with Travel Case Universal Compatibility for Home Work Outdoor Activities (Green)**Ferissvo**$39.98**4 rev2w ago](https://www.amazon.com/dp/B0H55YYGRF) [![80 Unit Peptide Pen Injector - Reusable Metal Injection Pen with Adjustable Dose Dial Universal Compatibility Include Travel Case for Home Travel Business (Silver)](https://m.media-amazon.com/images/I/312iDJTLyOL.jpg)**80 Unit Peptide Pen Injector - Reusable Metal Injection Pen with Adjustable Dose Dial Universal Compatibility Include Travel Case for Home Travel Business (Silver)**VILKTDD**$39.87**15 rev1mo ago](https://www.amazon.com/dp/B0H3KQ9R93) [![60 Unit Peptide Pen Injector - Reusable V4 Metal Injection Pen with Adjustable Dose Dial Universal Compatibility Include Travel Case for Home Travel Business (Black)](https://m.media-amazon.com/images/I/319YGxtjyUL.jpg)**60 Unit Peptide Pen Injector - Reusable V4 Metal Injection Pen with Adjustable Dose Dial Universal Compatibility Include Travel Case for Home Travel Business (Black)**VILKTDD**$39.78**15 rev1mo ago](https://www.amazon.com/dp/B0H3KRZM75) [![60 Unit Peptide Pen Reusable Injection Pen with 2pcs 3ml Cartridges and Protect Case Clear Dose Window Daily Use(Blue)](https://m.media-amazon.com/images/I/41Wp33hpxnL.jpg)**60 Unit Peptide Pen Reusable Injection Pen with 2pcs 3ml Cartridges and Protect Case Clear Dose Window Daily Use(Blue)**Bourvool**$41.48**19 rev1mo ago](https://www.amazon.com/dp/B0GZZ4ZT4P)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![Reusable Peptide Pen Injector Adjustable 180 Units Precision Dial Injection Pen Compatible with 3ml Cartridges Portable auto Injection Pen for Home or Travel](https://m.media-amazon.com/images/I/31E5CGNidgL.jpg)**Reusable Peptide Pen Injector Adjustable 180 Units Precision Dial Injection Pen Compatible with 3ml Cartridges Portable auto Injection Pen for Home or Travel**OraSafe**$39.79**5.0★**▲ 76%**](https://www.amazon.com/dp/B0GV7YLN9L) [![V2 Injection Pen Pen Injector Reusable Injection Pen Compatible with 3ml Pen Cartridges Pen Injector with Precise 1-80 Unit Adjustable Dose Includes 5 Empty 3ml Cartridges and Protective Carry Case](https://m.media-amazon.com/images/I/41iv8WSPOaL.jpg)**V2 Injection Pen Pen Injector Reusable Injection Pen Compatible with 3ml Pen Cartridges Pen Injector with Precise 1-80 Unit Adjustable Dose Includes 5 Empty 3ml Cartridges and Protective Carry Case**FaipoTeeh**$69.96**3.9★**▲ 76%**](https://www.amazon.com/dp/B0H1HLDQVR) [![Reusable Pen Compatible with 3ml Pen Cartridge](https://m.media-amazon.com/images/I/41T5yeDm2fL.jpg)**Reusable Pen Compatible with 3ml Pen Cartridge**Leigeobei**$44.06**3.0★**▲ 76%**](https://www.amazon.com/dp/B0H1C22H93) [![80 Unit Reusable Pen Injector - V1 Peptide Pens Compatible with 3mL Cartridges Include Protect Organizer for Commute Travel Gym Outdoor Bedside (Black)](https://m.media-amazon.com/images/I/21vbQgjRrKL.jpg)**80 Unit Reusable Pen Injector - V1 Peptide Pens Compatible with 3mL Cartridges Include Protect Organizer for Commute Travel Gym Outdoor Bedside (Black)**EvoLabTech**$39.85**4.0★**▲ 75%**](https://www.amazon.com/dp/B0GXYSHK9N) [![60 Unit Peptide Pen Injector - Reusable V4 Metal Injection Pen with Adjustable Dose Dial Universal Compatibility Include Travel Case for Home Travel Business (Black)](https://m.media-amazon.com/images/I/319YGxtjyUL.jpg)**60 Unit Peptide Pen Injector - Reusable V4 Metal Injection Pen with Adjustable Dose Dial Universal Compatibility Include Travel Case for Home Travel Business (Black)**VILKTDD**$39.78**4.8★**▲ 75%**](https://www.amazon.com/dp/B0H3KRZM75)

**~~View all trending →~~**

## **Demand**

Weekly Amazon search volume, last 43 weeks — +65.4% search growth over the last 90 days.

35K25KSpike '25Spike '26Sep '25Nov '25Dec '25Feb '26Mar '26May '26

## **Reviews**

What buyers praise and complain about, mined from review topics.

### **What buyers love **

**Ease Of Use**16%

*“easy to handle”*

**Quality-Overall**11%

*“Excellent product”*

**Value For Money**7%

*“worth every penny”*

**Size-Overall**5%

*“Fits Great”*

**Strength**5%

*“The case is sturdy”*

**Durability**5%

*“Durable Construction”*

**Efficiency**4%

*“Works well”*

**Advertised Vs Actual Product**4%

*“Worked as advertised”*

**Compatibility-Overall**3%

*“compatibility”*

**Dosage**3%

*“consistent with dosage”*

### **What buyers complain about **

**Quality-Overall**8%

*“Quality to value is low”*

**Functionality-Overall**8%

*“Did not work”*

**Instructions/User Manual/Troubleshooting**7%

*“No instructions”*

**Durability**6%

*“Broke after 6 weeks”*

**Value For Money**6%

*“very expensive”*

**Dosage**5%

*“It took several tries for me to release 10u of meds”*

**Ease Of Use**4%

*“Not easy to use”*

**Material Quality**3%

*“everything was plastic”*

**Leak-Proof**3%

*“A couple drops of liquid seem to leak out of the needle tip after injection”*

**Advertised Vs Actual Product**2%

*“Description incorrect”*

### **Top return reasons **

**Functionality-Overall**21%

**Size-Overall**15%

**Advertised Vs Actual Product**11%

**Compatibility-Overall**11%

**Instructions/User Manual/Troubleshooting**4%

**Dosage**4%

**Dispensing Mechanism**4%

**Quality-Overall**4%

**Ease Of Use**4%

**Leak-Proof**3%