Is mucinex profitable to sell on Amazon United Kingdom?

The niche generates £139K/yr across 12 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is -32.6%. Flapen's verdict: Skip it (39/100).

How competitive is the mucinex niche?

9 brands and 48 sellers compete. The top 5 products take 75% of clicks and top 5 brands hold 89% of demand.

What do buyers complain about in mucinex?

Top complaints mined from reviews: Cough Relief, Taste-Overall, Functionality-Overall. The return rate is 0.1%.

When does demand for mucinex peak?

Demand peaks in Jan–Feb; the busiest month runs 2.6× the quietest.

What does it cost to enter the mucinex niche?

Listings span £2.90–£17.23; the average listing price is £7.13 (sweet spot $15–$100). The average incumbent carries 1,572 reviews — the moat a new listing must climb.

mucinex

Skip it

Soft demand (-32.6% this quarter) — this niche doesn't clear our bar today.

Returns

Incredible0.1%

return rate — above 5% kills the launch gate

Conversion

Great7.9%

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

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Review moat

Okay1,571.75

avg incumbent reviews — the moat a new listing must climb

Market size

Okay£139K

£139K/yr · 245K searches

Brand share

Okay89%

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

Competition

Bad75%

top-5 click share — a locked-up shelf

Avg price

Bad£7.13

avg listing price — sweet spot $15–$100

Price range

Bad£2.90–£17.23

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

Growth

Bad-32.6%

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

According to Flapen's Amazon United Kingdom niche tracking, mucinex is a £139K/yr Amazon United Kingdom market (245K searches/yr). The top 5 brands hold 89% of demand. Demand peaks in Jan–Feb. Verdict: Skip it — 39/100.

Data updated Jul 25, 2026 · scored weekly · How we score niches

mucinex market data

Units sold / yr: 15K–20K; avg 1,000–1,250/product
Revenue / yr: £107K–£143K; units × avg price
Conversion rate: 7.9%
Avg BSR: #123
Page quality: 0%
Prime: 100%
Sponsored: 50%
Out of stock: 0.0%
Avg brand age: 55 months
Avg seller age: 162 days

Competition & brand share

The top 5 products capture 75% of clicks — a locked-up shelf that new listings rarely crack.

Brands

9 falling

Sellers

Top-5 brand share

89%

Top 20: 100%

Top-5 click share

75%

Top 20: 100%

Open market

Benylin55%
Sudafed11%
Covonia9%
POTTER'S9%
Murlancra5%
ratiopharm5%
Open — no brand owns it (3 brands, 7%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -32.6% search growth over the last 90 days.

Peak months: Jan, Feb · busiest ÷ quietest = 2.6×

Open Trend

Top mucinex search terms

mucinex50K/yr -18.0%3.6% conv.
mucus and phlegm removal38K/yr -29.1%8.3% conv.
guaifenesin25K/yr -35.7%8.5% conv.
phlegm and mucus remover24K/yr -17.4%6.3% conv.
throat mucus remover11K/yr -20.1%3.8% conv.
mucus relief17K/yr -37.5%8.1% conv.
mucus cough medicine13K/yr -30.0%15.7% conv.
mucus remover9K/yr -55.8%3.4% conv.
guaifenesin mucus relief8K/yr -40.7%9.7% conv.
mucinex guaifenesin5K/yr +4.3%6.8% conv.

All search terms

Top mucinex 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.

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

All 12 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Benylin Mucus Cough Max Menthol Flavour Helps to Clear Chest Mucus from Day 1 Cough Medicine for Adults 100 mg/5 ml Oral Solution 150 ml

Benylin£4.504.6★2,944 rev

Sudafed Mucus Relief Triple Action Cold & Flu Tablets (Pack of 16) Helps Fight Cold and Flu and Unblocks the Nose Reduces Mucus Works in 15 Minutes

Sudafed£3.504.5★3,826 rev

Benylin Mucus Cough & Cold All in One Tablets 16 each

Benylin£3.604.4★1,524 rev

Benylin Mucus Cough Max Honey and Lemon Flavour (1x 150ml) 100 mg/5 ml Cough Syrup Reduces Cough Intensity For Deep Penetrating Relief Cough Medicine for Adults

Benylin£4.104.6★2,888 rev

Potters Mucus Cough Pastilles 20 Pastilles

POTTER'S£2.904.5★1,087 rev

Newest

by launch date

Lung Exerciser and Mucus Clearing Device Breathing Mucus Clearing Relief Remover (Green)

Murlancra£10.15165 rev

10mo ago

Nutri-things£8.8259 rev

11mo ago

MillSTEPS Breathing Exercise Device for Lungs Lung Expansion & Mu-cus Relief Device (Blue)

MILL .STEPS£10.71269 rev

3y ago

Sudafed Mucus Relief Triple Action Cold & Flu Tablets (Pack of 16) Helps Fight Cold and Flu and Unblocks the Nose Reduces Mucus Works in 15 Minutes

Sudafed£3.503,826 rev

5y ago

Benylin Mucus Cough & Cold All in One Tablets 16 each

Benylin£3.601,524 rev

5y ago

What buyers say about mucinex

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

What buyers love

Cough Relief28%

“Eases a cough well”

Value For Money9%

“the benefits are great”

Quality-Overall8%

“Great device”

Efficiency7%

“Effective”

Advertised Vs Actual Product5%

“Did the job”

Ease Of Use5%

“Easy to use”

Breathability5%

“I am able to breathe so much better”

Sinus Relief4%

“cleared my blocked nose”

Strength3%

“Effective”

Taste-Overall3%

“Strong alcoholic taste”

What buyers complain about

Cough Relief19%

“my cough still lingered”

Taste-Overall17%

“The tablet does have an unpleasant taste”

Functionality-Overall9%

“it just does nothing”

Strength6%

“Not very good quite flimsy”

Breathability4%

“I was a bit wary about buying this breathing aid”

Dosage4%

“Just had first dose and became unbearably itchy, within minutes Ive a huge full body rash and hives, even on my face”

Value For Money4%

“Equivalent products much cheaper”

Durability3%

“Second one I have had as I accidentally broke the last one”

Language Issues2%

“Not very happy with this product came with no English instructions in haw many to take a day nothing in English about the side effects very poor”

Artificial Sweeteners2%

“I have just purchased this product before I bought it I asked if it contained any artificial sweeteners I was told no it contains sucrose Ive just read the list of ingredients”

Top return reasons

Functionality-Overall53%

Advertised Vs Actual Product14%

Quality-Overall5%

Product Condition4%

Instructions/User Manual/Troubleshooting3%

Cough Relief3%

Sensitivity-Overall2%

Certifications2%

Unsustainable Design2%

Age Suitability2%

Common questions

Is mucinex profitable to sell on Amazon United Kingdom?: The niche generates £139K/yr across 12 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is -32.6%. Flapen's verdict: Skip it (39/100).
How competitive is the mucinex niche?: 9 brands and 48 sellers compete. The top 5 products take 75% of clicks and top 5 brands hold 89% of demand.
What do buyers complain about in mucinex?: Top complaints mined from reviews: Cough Relief, Taste-Overall, Functionality-Overall. The return rate is 0.1%.
When does demand for mucinex peak?: Demand peaks in Jan–Feb; the busiest month runs 2.6× the quietest.
What does it cost to enter the mucinex niche?: Listings span £2.90–£17.23; the average listing price is £7.13 (sweet spot $15–$100). The average incumbent carries 1,572 reviews — the moat a new listing must climb.