Guaifenesin 400mg
FailPrices span $5.26–$14.65, mostly outside the sweet spot, so Guaifenesin 400mg is a Fail.
- Flapen Score
- 35 / 100Ranks 13,764 of 14,768 Health & Household niches · −14 vs the category median of 4935
- Market size
- $91K/yr41K searches / yr
- 90-day growth
- -10.0%search demand this quarter
- Competition
- 84%top-5 click share · 7 brands · 10 sellers
Flapen Score
Guaifenesin 400mg against its category
The dotted line is the Health & Household average. Past it, Guaifenesin 400mg is stronger. Inside it, weaker.
Market
The Guaifenesin 400mg market on Amazon at a glance
Shoppers on Amazon United States searched for Guaifenesin 400mg 41K times last year and spent an estimated $91K. The top 5 brands take 95% of clicks. Flapen scores it 35 out of 100, a Fail.
01 · Demand
An estimated 21.5% of those searches ended in a purchase.
Shoppers searched for this 41K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 21.5% of those searches ended in a purchase. Searches in the last 90 days moved -10.0% against the 90 days before. Searches, conversion and average price together put the market at an estimated $91K a year.
- Searches, last 12 months
- 41K
- Growth, 90 days vs prior 90
- -10.0%
- Conversion, latest week
- 21.5%
- Market size, estimated
- $91Ka year
- Peak month
- January1.4× the quietest month
- Top search term
- guaifenesin 400mg21K searches a year
02 · Price
A sale here is worth $10.34.
Listings sell for $10.34 on average, from $5.26 to $14.65. Amazon reports units sold in ranges. This niche sold 8K to 10K a year. The average listing sells 750 to 1,000 of them. At $10.34 that is $8K to $10K a year per listing.
- Average price
- $10.34under the $15 to $100 sweet spot
- Price range
- $5.26–$14.65
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 8K–10K
- Units per listing a year
- 750–1,000
- Revenue per listing a year
- $8K–$10K
- Returns
- 0.0%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is reviews.
80% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 16.0% of listings are out of stock. The average listing ranks #171 within Allergy, Sinus & Asthma. It carries 4,948 reviews at 4.60 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 80%
- Prime listings
- 100%
- Out of stock, average day
- 16.0%
- Average rank
- #171in Allergy, Sinus & Asthma
- Average rating
- 4.60 starsAmazon United States average 4.42 stars
- Average reviews
- 4,948per listing
- Listings tracked
- 10
04 · Newcomers
Brands here are established.
The brands on the shelf have sold for 85 months on average, so the names here are established.
- Launched, last 12 months
- 0
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 85 months
Products
Top Guaifenesin 400mg products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 11, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
HEALTH LFE Mucus Relief Guaifenesin Caplets 400 mg Immediate Release Fast Acting Expectorant Thin and Loosens Mucus Relieves Chest Congestion Cough Cold and Flu (Medium 200 Count)
- Price
- $9.90
- Rating
- 4.6/5
- Reviews
- 3,317
- Age
- 4y ago

HealthA2Z Mucus Relief Guaifenesin 400mg 300 Counts Dye Free No Benzene Immediate Release Expectorant
- Price
- $14.65
- Rating
- 4.6/5
- Reviews
- 6,328
- Age
- 8y ago

GenCare Mucus Relief Expectorant Guaifenesin 400 mg 200 Tablets Value Pack - Fast Acting Thinning of Mucus for Colds Chest Congestion Flu Coughing and Allergies
- Price
- $9.90
- Rating
- 4.6/5
- Reviews
- 9,209
- Age
- 6y ago

ValuMeds Mucus Relief Guaifenesin 400mg (200 Caplets) | Maximum Strength | Mucus Thinning for Colds Chest Congestion Flu Coughing | Expectorant & Decongestant
- Price
- $8.23
- Rating
- 4.6/5
- Reviews
- 4,830
- Age
- 7y ago

GenCare Mucus Relief Expectorant Guaifenesin 400 mg 300 Tablets Value Pack - Fast Acting Thinning of Mucus for Colds Chest Congestion Flu Coughing and Allergies
- Price
- $12.84
- Rating
- 4.6/5
- Reviews
- 9,209
- Age
- 6y ago
Trending
estimated 90-day click momentum
NewVue Mucus Relief Guaifenesin 400mg Powerful Expectorant Loosens & Thins Mucus Cough Relief Compare to Mucinex Active Ingredients (Small 300 Count)
- Price
- $11.84
- Rating
- 4.6/5
- Reviews
- 118
- Age
- 2y ago

GenCare Mucus Relief Expectorant Guaifenesin 400 mg 300 Tablets Value Pack - Fast Acting Thinning of Mucus for Colds Chest Congestion Flu Coughing and Allergies
- Price
- $12.84
- Rating
- 4.6/5
- Reviews
- 9,209
- Age
- 6y ago

HealthLife Mucus Relief Guaifenesin Caplets 400 mg Immediate Release (300 Count) Fast Acting Expectorant Thin and Loosens Mucus Relieves Chest Congestion Cough Cold and Flu
- Price
- $13.28
- Rating
- 4.6/5
- Reviews
- 3,317
- Age
- 5y ago

HealthA2Z Mucus Relief Guaifenesin 400mg 300 Counts Dye Free No Benzene Immediate Release Expectorant
- Price
- $14.65
- Rating
- 4.6/5
- Reviews
- 6,328
- Age
- 8y ago

Safrel | Guaifenesin Expectorant | 400 mg | Tablets | 200 Count | Thins and Loosens Mucus | Chest Congestion Support
- Price
- $9.54
- Rating
- 4.6/5
- Reviews
- 4,021
- Age
- 5y ago
Newest
by launch date
NewVue Mucus Relief Guaifenesin 400mg Powerful Expectorant Loosens & Thins Mucus Cough Relief Compare to Mucinex Active Ingredients (Small 300 Count)
- Price
- $11.84
- Rating
- 4.6/5
- Reviews
- 118
- Age
- 2y ago

HealthA2Z Mucus Relief | Guaifenesin 400mg | Immediate Release | No Benzene | Expectorant (60 Counts)
- Price
- $5.26
- Rating
- 4.6/5
- Reviews
- 6,328
- Age
- 3y ago

HEALTH LFE Mucus Relief Guaifenesin Caplets 400 mg Immediate Release Fast Acting Expectorant Thin and Loosens Mucus Relieves Chest Congestion Cough Cold and Flu (Medium 200 Count)
- Price
- $9.90
- Rating
- 4.6/5
- Reviews
- 3,317
- Age
- 4y ago

HealthLife Mucus Relief Guaifenesin Caplets 400 mg Immediate Release (300 Count) Fast Acting Expectorant Thin and Loosens Mucus Relieves Chest Congestion Cough Cold and Flu
- Price
- $13.28
- Rating
- 4.6/5
- Reviews
- 3,317
- Age
- 5y ago

Safrel | Guaifenesin Expectorant | 400 mg | Tablets | 200 Count | Thins and Loosens Mucus | Chest Congestion Support
- Price
- $9.54
- Rating
- 4.6/5
- Reviews
- 4,021
- Age
- 5y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 84% of clicks. A locked shelf that new listings rarely crack.
Brands
7 flat
Sellers
10
Est. top-5 brand share
95%
Top 20: 100%
Est. top-5 click share
84%
Top 20: 100%
Open market
2%
- HEALTH LFE37%
- GenCare24%
- HealthA2Z20%
- ValuMeds10%
- Safrel5%
- NewVue3%
- Open — no brand owns it (1 brand, 2%)
Demand
Guaifenesin 400mg search demand
Weekly searches over the year, seasonality beneath. Pick a range.
No pronounced peak months · busiest ÷ quietest = 1.4×
Search terms
Top Guaifenesin 400mg search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- guaifenesin 400mg21K/yr
- mucus relief 400mg16K/yr
- guaifenesin 400 mg4K/yr
Reviews and returns
What reviews say buyers love and hate about Guaifenesin 400mg
We read the reviews and the return reasons for every product selling here.
“Incorrect dosage instructions”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
17 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Guaifenesin 400mg questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









