Injection Pen
Launch itA $974K/yr market growing +65.4% this quarter with returns at 2.1% — clears our launch bar.
Review moat
Incredible39.67avg incumbent reviews — the moat a new listing must climb
Avg price
Incredible$44.54avg listing price — sweet spot $15–$100
Competition
Great30%top-5 click share — an open shelf
Quality gap
Great4.2★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
Good2.1%return rate — above 5% kills the launch gate
Price range
Good$15.85–$153.94cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Good70%top-5 brand share — brands hold most of the demand
Conversion
Okay2.3%search→purchase rate — share of searches ending in a sale
Is injection pen profitable on Amazon?
According to Flapen's Amazon United States niche tracking, injection pen is a $974K/yr Amazon United States market (934K searches/yr). The top 5 brands hold 70% of demand. Verdict: Launch it — 73/100.
Data updated Jul 10, 2026 · scored weekly · How we score niches
injection pen market size & sales
Units sold, revenue, conversion and listing quality across the tracked shelf.- Units sold / yr
- 15K–20K
- avg 250–500/product
- Revenue / yr
- $668K–$891K
- units × avg price
- Conversion rate
- 2.3%
- Avg BSR
- #288
- Page quality
- 0%
- Prime
- 81%
- Sponsored
- 70%
- Out of stock
- 15.9%
- Avg brand age
- 32 months
- Avg seller age
- 143 days
Competition: brands, sellers & click share
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%
Top 20: 98%
Top-5 click share
30%
Top 20: 62%
Open market
24%
- Generic38%
- VILKTDD11%
- GXZ Health8%
- EvoLabTech7%
- ENDURAPEP7%
- Ferissvo6%
injection pen demand & seasonality
Weekly Amazon search volume, last 43 weeks — +65.4% search growth over the last 90 days.Top injection pen search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.- peptide pen215K/yr
- peptide pen injector138K/yr
- insulin pen175K/yr
- injection pen80K/yr
- reusable insulin pen68K/yr
- v2 pen injector46K/yr
- auto injector pen36K/yr
- peptide pens17K/yr
- v2 peptide pen13K/yr
- injector pen20K/yr
Top injection pen products & what they sell for
Every tracked product — its share of the shelf, its review moat, and what it sells for.Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
V2 Reusable Research Peptide Pen Injector (Blue) (1 3ml/cc Cart included)
Generic$24.904.0★74 rev
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$99.644.0★26 rev
60 Unit Reusable Research Pen Injector with Protect Case and 2Pcs 3ml Cartridges (Blue)
VILKTDD$40.834.3★34 rev
60 Units Reusable Peptide Pen Injector Clear Scale and Protect Case Compatible with 3ML for Home and Travel Use(Gold)
FJNATINH$39.783.9★19 rev
Pink 60 Unit V2 Reusable Pen Injector and Cartridge Filing Block
Generic$25.843.6★29 rev
Newest
by launch date
80 Unit Peptide Pen Injector - Reusable Metal Injection Pen with Adjustable Dose Dial Universal Compatibility Include Travel Case for Home Travel Business (Silver)
VILKTDD$39.8715 rev
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$99.6426 rev
60 Unit V3 Reusable Peptide Pen Injector Adjustable Dose Dial Injection Pen Compatible with 3ml Cartridges Clear Scale Portable Reusable Injection Pen for Home or Travel
OraSafe$39.229 rev
60 Unit Peptide Pen Reusable V2 Injector Metal Pens with 2PCS 3ml Cartridges and Travel Case Universal Compatibility Daily Use (Black)
Ferissvo$42.0829 rev
60 Unit Reusable Pen Injector - V3 Peptide Pens Compatible with 3mL Cartridges Include Protect Organizer for Commute Travel Gym Outdoor Bedside (Gold)
EvoLabTech$39.7720 rev
Trending
90-day click momentum80 Unit Peptide Pen Injector - Reusable Metal Injection Pen with Adjustable Dose Dial Universal Compatibility Include Travel Case for Home Travel Business (Silver)
VILKTDD$39.874.8★
60 Unit Reusable Research Pen Injector with Protect Case and 2Pcs 3ml Cartridges (Blue)
VILKTDD$40.834.3★
60 Units Reusable Peptide Pen Injector Clear Scale and Protect Case Compatible with 3ML for Home and Travel Use(Gold)
FJNATINH$39.783.9★
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$99.644.0★
60 Unit V3 Reusable Peptide Pen Injector Adjustable Dose Dial Injection Pen Compatible with 3ml Cartridges Clear Scale Portable Reusable Injection Pen for Home or Travel
OraSafe$39.225.0★
What reviews say buyers love and hate about injection pen
What buyers praise and complain about, mined from review topics.What buyers love
“easy to handle”
“Excellent product”
“worth every penny”
“Fits Great”
“The case is sturdy”
“Durable Construction”
“Works well”
“Worked as advertised”
“compatibility”
“consistent with dosage”
What buyers complain about
“Quality to value is low”
“Did not work”
“No instructions”
“Broke after 6 weeks”
“very expensive”
“It took several tries for me to release 10u of meds”
“Not easy to use”
“everything was plastic”
“A couple drops of liquid seem to leak out of the needle tip after injection”
“Description incorrect”
Top return reasons
Common injection pen questions
- Is injection pen profitable to sell on Amazon United States?
- The niche generates $974K/yr across 64 tracked products. 35 of 55 products launched in the last 360 days are still selling. 90-day search growth is +65.4%. Flapen's verdict: Launch it (73/100).
- How competitive is the injection pen niche?
- 22 brands and 101 sellers compete. The top 5 products take 30% of clicks and top 5 brands hold 70% of demand.
- What do buyers complain about in injection pen?
- Top complaints mined from reviews: Quality-Overall, Functionality-Overall, Instructions/User Manual/Troubleshooting. The return rate is 2.1%.
- What does it cost to enter the injection pen niche?
- Listings span $15.85–$153.94; the average listing price is $44.54 (sweet spot $15–$100). The average incumbent carries 40 reviews — the moat a new listing must climb.