fever
Worth a lookShows low returns (0.0%), but soft demand (-56.2% this quarter) keeps it on the watch list.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Market size
Incredible$2.7M$2.7M/yr · 1.7M searches
Conversion
Incredible13.1%search→purchase rate — share of searches ending in a sale
Price range
Good$5.66–$25.16cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Good$12.08avg listing price — sweet spot $15–$100
Competition
Okay55%top-5 click share — leaders hold, buyers still browse
Review moat
Okay3,903.1avg incumbent reviews — the moat a new listing must climb
Brand share
Bad92%top-5 brand share — brand-locked demand
Quality gap
Bad4.8★avg incumbent rating — lower means beatable quality
Growth
Bad-56.2%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, fever is a $2.7M/yr Amazon United States market (1.7M searches/yr). The top 5 brands hold 92% of demand. Demand peaks in Jan–Feb. Verdict: Worth a look — 51/100.
Data updated Jul 11, 2026 · scored weekly · How we score niches
fever market data
- Units sold / yr
- 250K–300K
- avg 6,000–8,000/product
- Revenue / yr
- $3.0M–$3.6M
- units × avg price
- Conversion rate
- 13.1%
- Avg BSR
- #142
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 90%
- Out of stock
- 0.0%
- Avg brand age
- 88 months
- Avg seller age
- 144 days
Competition & brand share
The top 5 products take 55% of clicks — established leaders, but buyers still shop beyond them.Brands
10 rising
Sellers
660
Top-5 brand share
92%
Top 20: 100%
Top-5 click share
55%
Top 20: 88%
Open market
5%
- Tylenol39%
- Mucinex25%
- Amazon Basic Care21%
- Boiron4%
- Vicks4%
- Amazon Basics3%
- Open — no brand owns it (4 brands, 5%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -56.2% search growth over the last 90 days.Peak months: Jan, Feb · busiest ÷ quietest = 5.4×
Top fever search terms
- cold and flu medicine for adults326K/yr
- tylenol cold and flu severe164K/yr
- flu medicine for adults226K/yr
- mucinex cold and flu94K/yr
- tylenol cold and flu141K/yr
- mucinex fast max138K/yr
- cold and flu medicine135K/yr
- flu medicine100K/yr
- daytime cold and flu80K/yr
- severe cold and flu medicine for adults22K/yr
Top fever 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 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Tylenol Cold + Flu Severe Daytime + Nighttime Cold Medicine Caplets Combo Pack for Multi-Symptom Cough Sore Throat Headache Nasal Congestion Relief Acetaminophen Pain Reliever 24 Count
Tylenol$7.394.8★10,622 rev
Tylenol Cold + Flu Severe Medicine Caplets for Cold & Flu Symptom Relief Fever Reducer Pain Reliever Cough Suppressant Nasal Decongestant & Expectorant with Acetaminophen 24 ct.
Tylenol$7.384.8★7,385 rev
Mucinex Fast-Max Maximum Strength Day & Night Cold and Flu Medicine for Adults Powerful Over-the-Counter Medication for Cold & Flu Symptoms Fast Dissolving Liquid Gels 24 Count
Mucinex$17.044.8★1,479 rev
Amazon Basic Care Vapor Ice Day and Night Severe Cold and Flu Relief Caplets Maximum Strength Multi-Symptom Medicine for Cough Sore Throat Nasal Congestion 48 Count
Amazon Basic Care$11.774.7★5,704 rev
Amazon Basic Care Cold and Flu Relief Daytime and Nighttime Combo Pack Softgels for Multi-Symptom Relief Sore Throat Cough Nasal Congestion Headache 48 Count (Pack of 1)
Amazon Basic Care$9.614.7★7,387 rev
Newest
by launch dateMucinex Fast-Max Maximum Strength Day & Night Cold and Flu Medicine for Adults Powerful Over-the-Counter Medication for Cold & Flu Symptoms Fast Dissolving Liquid Gels 24 Count
Mucinex$17.041,479 rev
Mucinex Fast-Max Maximum Strength Cold and Flu Medicine for Adults Powerful Over-the-Counter Medication for 6 Different Cold & Flu Symptoms Fast Release Caplets 20 Count
Mucinex$13.68127 rev
Mucinex Rapid Clear Maximum Strength Cold Medicine & Expectorant Fever Pain Headache & Excess Mucus Relief with Acetaminophen & Guaifenesin Rapid Release Caplets for Adults 20 Count
Mucinex$13.701,862 rev
Tylenol Day & Night Cold & Flu Multi-Symptom Liquid Gels Combo Pack Cold & Flu Relief Medicine Pain Reliever & Fever Reducer + Cough Suppressant & Antihistamine 24 ct
Tylenol$9.32603 rev
Theraflu Severe Cold and Cough Nighttime and Daytime Cough and Cold Medicine Berry Flavor - 8.3 Fl Oz Syrup x 2
Theraflu$13.66883 rev
Trending
90-day click momentum
Amazon Basic Care Maximum Strength Daytime Honey Flavor Severe Cold and Flu Relief Multi-Symptom Non-Drowsy Cough Sore Throat Nasal Congestion Liquid Medicine 12 fl oz (Pack of 1)
Amazon Basic Care$5.664.6★
Amazon Basic Care Nighttime Severe Cold and Flu Syrup Max Strength Liquid Medicine for Cough Sore Throat Nasal Congestion Pain Reliever Fever Reducer Original 12 fl oz
Amazon Basic Care$6.084.7★
Amazon Basics Daytime Cold and Flu Relief Non-Drowsy Liquid Medicine Original Flavor 12 fl oz (Pack of 1) (Previously Care)
Amazon Basics$5.974.7★
Theraflu Severe Cold and Cough Nighttime and Daytime Cough and Cold Medicine Berry Flavor - 8.3 Fl Oz Syrup x 2
Theraflu$13.664.8★
Mucinex Fast-Max Maximum Strength Cold and Flu Medicine for Adults Powerful Over-the-Counter Medication for 6 Different Cold & Flu Symptoms Fast Release Caplets 20 Count
Mucinex$13.684.9★
What buyers say about fever
What buyers praise and complain about, mined from review topics.What buyers love
“Great for colds”
“Works perfectly”
“Very affordable”
“Best quality”
“As described”
“Controls cough”
“Great taste”
“helps me sleep”
“It helps when you sick”
“Clears up my sinuses”
What buyers complain about
“Tastes Bad”
“This hardly works at all”
“Very costly”
“coughing more than I should”
“Had a bad case of the flu”
“its hard to separate”
“Not as good as other brands”
“THIS PRODUCT MADE ME EXTREMELY ILL”
“Not that many servings per bottle”
“Contains nothing”
Common questions
- Is fever profitable to sell on Amazon United States?
- The niche generates $2.7M/yr across 31 tracked products. 90-day search growth is -56.2%. Flapen's verdict: Worth a look (51/100).
- How competitive is the fever niche?
- 10 brands and 660 sellers compete. The top 5 products take 55% of clicks and top 5 brands hold 92% of demand.
- What do buyers complain about in fever?
- Top complaints mined from reviews: Taste-Overall, Functionality-Overall, Value For Money. The return rate is 0.0%.
- When does demand for fever peak?
- Demand peaks in Jan–Feb; the busiest month runs 5.4× the quietest.
- What does it cost to enter the fever niche?
- Listings span $5.66–$25.16; the average listing price is $12.08 (sweet spot $15–$100). The average incumbent carries 3,903 reviews — the moat a new listing must climb.