acetaminophen 650mg extended release
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Conversion
Incredible18.3%search→purchase rate — share of searches ending in a sale
Avg price
Great$15.54avg listing price — sweet spot $15–$100
Market size
Good$648K$648K/yr · 228K searches
Price range
Good$7.14–$23.49cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Okay+5.5%90-day search growth — must beat 0% to launch
Review moat
Bad5,721.43avg incumbent reviews — the moat a new listing must climb
Quality gap
Bad4.8★avg incumbent rating — lower means beatable quality
Competition
Bad92%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, acetaminophen 650mg extended release is a $648K/yr Amazon United States market (228K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 44/100.
Data updated Jul 11, 2026 · scored weekly · How we score niches
acetaminophen 650mg extended release market data
- Units sold / yr
- 40K–50K
- avg 5,000–6,000/product
- Revenue / yr
- $622K–$777K
- units × avg price
- Conversion rate
- 18.3%
- Avg BSR
- #72
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 86%
- Out of stock
- 0.0%
- Avg brand age
- 90 months
- Avg seller age
- 156 days
Competition & brand share
The top 5 products capture 92% of clicks — a locked-up shelf that new listings rarely crack.Brands
4 falling
Sellers
52
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
92%
Top 20: 100%
Open market
0%
- Amazon Basic Care70%
- TIME-CAP LABS, INC.13%
- HealthA2Z11%
- MEMBER´S MARK6%
- Open — no brand owns it (0%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +5.5% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.2×
Top acetaminophen 650mg extended release search terms
- acetaminophen 650mg extended release126K/yr
- acetaminophen 650mg extra strength12K/yr
- acetaminophen arthritis13K/yr
- 650 mg acetaminophen arthritis pain 650 mg 8 hour10K/yr
- arthritis strength acetaminophen 650 mg9K/yr
- acetaminophen 650 mg20K/yr
- 8 hour arthritis pain relief acetaminophen 650 mg8K/yr
- 8 hr arthritis pain relief 650 mg acetaminophen8K/yr
- acetaminophen 65010K/yr
- acetaminophen 650mg6K/yr
Top acetaminophen 650mg extended release products on Amazon
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 7 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Amazon Basic Care Acetaminophen Extended-Release Tablets 650 mg Pain Reliever Fever Reducer Arthritis Pain Headache Backache Menstrual Pain 400 Count
Amazon Basic Care$19.984.8★25,357 rev
Amazon Basic Care Acetaminophen Extended-Release Tablets 650 mg Pain Reliever Fever Reducer 8 Hour Relief 100 Count
Amazon Basic Care$7.144.8★3,652 rev
TIME-Cap Labs 400 Caplets Extended Release Acetaminophen 650mg - Pain Reliever & Fever Reducer for Adults Helps with Headaches Backaches Muscle Pain Toothaches Arthritis & Menstrual Cramps
TIME-CAP LABS, INC.$20.324.8★3,684 rev
HealthA2Z Pain Relief Extended Release | Acetaminophen 650mg | 8 Hours | Arthiritis Pain | Pain Reliever - Fever Reducer | Contains no Aspirin (100 Count)
HealthA2Z$8.434.8★2,616 rev
Compare to Tylenol Arthritis Pain Active Ingredient. - Members Mark - Arthritis Pain Reliever Extended Release Acetaminophen 650 mg 400 CapletsQ
MEMBER´S MARK$23.494.8★1,205 rev
Newest
by launch dateAmazon Basic Care Acetaminophen Extended-Release Tablets 650 mg Pain Reliever Fever Reducer 8 Hour Relief 100 Count
Amazon Basic Care$7.143,652 rev
HealthA2Z Pain Relief Extended Release | Acetaminophen 650mg | 8 Hours | Arthiritis Pain | Pain Reliever - Fever Reducer | Contains no Aspirin (100 Count)
HealthA2Z$8.432,616 rev
HealthA2Z Acetaminophen 650mg ER 8-Hour Pain & Fever Dye Free 250 Ct
HealthA2Z$15.512,616 rev
TIME-Cap Labs 225 Caplets Extended Release Acetaminophen 650mg - Pain Reliever & Fever Reducer for Adults Helps with Headaches Backaches Muscle Pain Toothaches & Menstrual Cramps
TIME-CAP LABS, INC.$13.93920 rev
TIME-Cap Labs 400 Caplets Extended Release Acetaminophen 650mg - Pain Reliever & Fever Reducer for Adults Helps with Headaches Backaches Muscle Pain Toothaches Arthritis & Menstrual Cramps
TIME-CAP LABS, INC.$20.323,684 rev
Trending
90-day click momentumTIME-Cap Labs 400 Caplets Extended Release Acetaminophen 650mg - Pain Reliever & Fever Reducer for Adults Helps with Headaches Backaches Muscle Pain Toothaches Arthritis & Menstrual Cramps
TIME-CAP LABS, INC.$20.324.8★
Amazon Basic Care Acetaminophen Extended-Release Tablets 650 mg Pain Reliever Fever Reducer 8 Hour Relief 100 Count
Amazon Basic Care$7.144.8★
TIME-Cap Labs 225 Caplets Extended Release Acetaminophen 650mg - Pain Reliever & Fever Reducer for Adults Helps with Headaches Backaches Muscle Pain Toothaches & Menstrual Cramps
TIME-CAP LABS, INC.$13.934.8★
Amazon Basic Care Acetaminophen Extended-Release Tablets 650 mg Pain Reliever Fever Reducer Arthritis Pain Headache Backache Menstrual Pain 400 Count
Amazon Basic Care$19.984.8★
HealthA2Z Pain Relief Extended Release | Acetaminophen 650mg | 8 Hours | Arthiritis Pain | Pain Reliever - Fever Reducer | Contains no Aspirin (100 Count)
HealthA2Z$8.434.8★
What buyers say about acetaminophen 650mg extended release
What buyers praise and complain about, mined from review topics.What buyers love
“Very affordable”
“Just as good as name brand”
“As advertised”
“Does the job”
“Have used this for knee pain etc for years”
“Great medication”
“Useful”
“Strong”
“It is that reliable compound we turn to when our body decides that a headache or a mild fever is going to ruin the day”
“This acetaminophen is as effective as any brand pm the market”
What buyers complain about
“cheaper”
“And pain”
“Didnt work for me”
“Not as strong as the Tylenol brand”
“The acetaminophen I received had expired”
“The remaining 325 mg is slowly released over the next 7 or so hours which is too little per hour to help with anything other than very minor pain”
“Sticks to your throat”
“One was moldy and discolored”
“Cannot use”
“And the driver did not follow the instructions he was given”
Common questions
- Is acetaminophen 650mg extended release profitable to sell on Amazon United States?
- The niche generates $648K/yr across 7 tracked products. 90-day search growth is +5.5%. Flapen's verdict: Skip it (44/100).
- How competitive is the acetaminophen 650mg extended release niche?
- 4 brands and 52 sellers compete. The top 5 products take 92% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in acetaminophen 650mg extended release?
- Top complaints mined from reviews: Value For Money, Pain Relief-Overall, Functionality-Overall. The return rate is 0.0%.
- When does demand for acetaminophen 650mg extended release peak?
- Demand is steady year-round — the busiest month runs 1.2× the quietest.
- What does it cost to enter the acetaminophen 650mg extended release niche?
- Listings span $7.14–$23.49; the average listing price is $15.54 (sweet spot $15–$100). The average incumbent carries 5,721 reviews — the moat a new listing must climb.