---
title: "Guaifenesin Liquid — $97K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/guaifenesin-liquid"
last_updated: "2026-08-06T16:35:08.199Z"
locale: en
meta:
description: "Niche score 37/100 · $97K/yr market · 85K searches/yr · $10.37 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 37/100 · $97K/yr market · 85K searches/yr · $10.37 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Guaifenesin Liquid — $97K/yr Amazon US Niche (2026) - Flapen"
---
# **guaifenesin liquid**
**Skip it**
Soft demand (-31.0% this quarter) — this niche doesn't clear our bar today.
Market size 24Growth 9Conversion 91Competition 16Returns 100Price range 28Avg price 36Brand share 16Review moat 44Quality gap 28
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****11.1%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Okay****2,085**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Okay****$10.37**
avg listing price — sweet spot $15–$100
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Price range**
**Okay****$4.47–$19.19**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Bad****$97K**
$97K/yr · 85K searches
**Competition**
**Bad****80%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****94%**
top-5 brand share — brand-locked demand
**Growth**
**Bad****-31.0%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, guaifenesin liquid is a $97K/yr Amazon United States market (85K searches/yr). The top 5 brands hold 94% of demand. Demand peaks in Jan–Feb. Verdict: Skip it — 37/100.
Data updated Jul 11, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **guaifenesin liquid market data**
- **Units sold / yr**
- **10K–13K**
- avg 500–750/product
- **Revenue / yr**
- **$104K–$130K**
- units × avg price
- **Conversion rate**
- **11.1%**
- **Avg BSR**
- **#172**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **91%**
- **Out of stock**
- **7.3%**
- **Avg brand age**
- **92 months**
- **Avg seller age**
- **164 days**
## **Competition & brand share**
The top 5 products capture 80% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**7 **▼falling
**Sellers**
**62**
**Top-5 brand share**
**94%**
Top 20: 100%
**Top-5 click share**
**80%**
Top 20: 100%
**Open market**
**3%**
- GeriCare38% - RUGBY LABORATORIES33% - Amazon Basic Care10% - Mucinex7% - SDA LABORATORIES6% - McKesson3% - Open — no brand owns it (1 brand, 3%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -31.0% search growth over the last 90 days.
3K2KSpike '24Black Friday '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jan, Feb · busiest ÷ quietest = 2.3×
[**Open Trend **](https://flapen.com/research/us/health-household/guaifenesin-liquid/trend)
## **Top guaifenesin liquid search terms**
- **guaifenesin liquid**53K/yr-28.6%8.5% conv. - **guaifenesin liquid expectorant**7K/yr-31.5%8.4% conv. - **liquid guaifenesin**8K/yr-43.9%8.6% conv. - **tussin guaifenesin liquid**6K/yr-34.4%9.4% conv. - **guaifenesin syrup**4K/yr-29.3%7.0% conv. - **liquid expectorant**3K/yr-35.6%6.1% conv. - **guaifenesin liquid expectorant only**4K/yr-17.2%4.5% conv. [**All search terms **](https://flapen.com/research/us/health-household/guaifenesin-liquid/search-terms)
## **Top guaifenesin liquid 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.
0%10%$10K20%$19K30%$29K40%$39K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 11 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**GeriCare Geri-Tussin Guaifenesin Oral Liquid Solution Sugar-Free Alcohol-Free Cough and Cold Relief Syrup Helps Clear Chest Congestion 16 Ounce Bottle (Pack of 1)**GeriCare**$9.80**4.6★1,033 rev](https://www.amazon.com/dp/B00PV6QRZK) [2**Rugby Chest Congestion Relief Expectorant Guaifenesin USP 100 mg Alcohol-Free Cherry Menthol Cough Syrup 16 fl oz (1 Pack)**RUGBY LABORATORIES**$10.07**4.5★354 rev](https://www.amazon.com/dp/B0C15T5JRV) [3**Rugby Mucus & Chest Congestion Cough Syrup Guaifenesin 200 mg Expectorant Cherry Flavored - 4 Fl Oz (1 Pack)**RUGBY LABORATORIES**$7.07**4.5★358 rev](https://www.amazon.com/dp/B07PPQ3JTH) [4**Amazon Basic Care Tussin DM MAX Maximum Strength Cough and Chest Congestion Medicine Non-Drowsy Alcohol Free Expectorant Raspberry Menthol Flavor 8 fl oz (Pack of 1)**Amazon Basic Care**$5.94**4.7★5,526 rev](https://www.amazon.com/dp/B087D294P5) [5**SDA LABORATORIES Tussin Guaifenesin Expectorant Cough Medicine Oral Solution 16 Fl Oz Liquid Cherry Mint Flavor Alcohol-Free Sugar-Free Relieves Mucus and Chest Congestion (Pack of 1)**SDA LABORATORIES**$9.99**4.4★325 rev](https://www.amazon.com/dp/B0DJCCRL57)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Revasol Tussin Cough Syrup Mucus Clear for Phlegm and Congestion Tussin Guaifenesin Liquid & Chest Decongestant for Adults and Kids 12 and Up Expectorant Mucus Support Liquid**Revasol**$11.31**58 rev1y ago](https://www.amazon.com/dp/B0F1JC1HPP) [**SDA LABORATORIES Tussin Guaifenesin Expectorant Cough Medicine Oral Solution 16 Fl Oz Liquid Cherry Mint Flavor Alcohol-Free Sugar-Free Relieves Mucus and Chest Congestion (Pack of 1)**SDA LABORATORIES**$9.99**325 rev1y ago](https://www.amazon.com/dp/B0DJCCRL57) [**GeriCare Geri-Tussin Guaifenesin Oral Liquid Solution Sugar-Free Alcohol-Free Cough and Cold Relief Syrup Helps Clear Chest Congestion Cherry Menthol Flavor 16 Ounce Bottle (Pack of 2)**GeriCare**$19.19**1,033 rev2y ago](https://www.amazon.com/dp/B0CRLJXRG9) [**Rugby Chest Congestion Relief Expectorant Guaifenesin USP 100 mg Alcohol-Free Cherry Menthol Cough Syrup 16 fl oz (1 Pack)**RUGBY LABORATORIES**$10.07**354 rev3y ago](https://www.amazon.com/dp/B0C15T5JRV) [**Amazon Basic Care Tussin Cough Plus Chest Congestion DM Syrup Non-Drowsy Expectorant Mucus Relief Raspberry Flavor 8 fl oz (Pack of 1)**Amazon Basic Care**$4.47**2,121 rev3y ago](https://www.amazon.com/dp/B09DH6ZKMX)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**GeriCare Geri-Tussin Guaifenesin Oral Liquid Solution Sugar-Free Alcohol-Free Cough and Cold Relief Syrup Helps Clear Chest Congestion Cherry Menthol Flavor 16 Ounce Bottle (Pack of 2)**GeriCare**$19.19**4.6★**▲ 70%**](https://www.amazon.com/dp/B0CRLJXRG9) [**Mucinex Fast-Max Severe Congestion & Cough Medicine Maximum Strength Symptom Relief Over-The-Counter Medication Cold Medicine Cough Suppressant Expectorant Nasal Decongestant 6 FL OZ**Mucinex**$12.94**4.7★**▲ 56%**](https://www.amazon.com/dp/B0057UUGWA) [**GeriCare Geri-Tussin Guaifenesin Oral Liquid Solution Sugar-Free Alcohol-Free Cough and Cold Relief Syrup Helps Clear Chest Congestion 16 Ounce Bottle (Pack of 1)**GeriCare**$9.80**4.6★**▲ 54%**](https://www.amazon.com/dp/B00PV6QRZK) [**Amazon Basic Care Tussin DM MAX Maximum Strength Cough and Chest Congestion Medicine Non-Drowsy Alcohol Free Expectorant Raspberry Menthol Flavor 8 fl oz (Pack of 1)**Amazon Basic Care**$5.94**4.7★**▲ 16%**](https://www.amazon.com/dp/B087D294P5) [**Rugby Chest Congestion Relief Expectorant Guaifenesin USP 100 mg Alcohol-Free Cherry Menthol Cough Syrup 16 fl oz (1 Pack)**RUGBY LABORATORIES**$10.07**4.5★**▲ 12%**](https://www.amazon.com/dp/B0C15T5JRV)
**~~View all trending →~~**
## **What buyers say about guaifenesin liquid**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Cough Relief**26%
*“Good cough syrup”*
**Value For Money**11%
*“Good price”*
**Efficiency**10%
*“works fast”*
**Quality-Overall**8%
*“Just as good as name brand”*
**Taste-Overall**7%
*“It works and it tastes ok”*
**Advertised Vs Actual Product**7%
*“It works as advertised”*
**Cold Relief**4%
*“Best night cold medicine”*
**Sinus Relief**2%
*“Great product for sinuses”*
**Sleep Quality**2%
*“Was able sleep”*
**Flavor**2%
*“Flavor is good”*
### **What buyers complain about **
**Taste-Overall**18%
*“TASTE AWFUL”*
**Cough Relief**11%
*“this is the worst tasting cough medicine Ive ever tasted”*
**Functionality-Overall**7%
*“ineffective”*
**Ease Of Use**7%
*“Too hard to open”*
**Value For Money**5%
*“TOOOOOO EXPENSIVE”*
**Dosage**5%
*“Dosage cup cracked and unusable”*
**Flavor**3%
*“Flavor is inconsistent”*
**Dilute/Watery**3%
*“WAYYYYYY TOO WATERY”*
**Sinus Relief**2%
*“the menthol additive is so strong it burns your tender esophagus when swallowed”*
**Instructions/User Manual/Troubleshooting**2%
*“The instructions for how to open it are inane”*
## **Common questions**
- **Is guaifenesin liquid profitable to sell on Amazon United States?**
- The niche generates $97K/yr across 11 tracked products. 90-day search growth is -31.0%. Flapen's verdict: Skip it (37/100).
- **How competitive is the guaifenesin liquid niche?**
- 7 brands and 62 sellers compete. The top 5 products take 80% of clicks and top 5 brands hold 94% of demand.
- **What do buyers complain about in guaifenesin liquid?**
- Top complaints mined from reviews: Taste-Overall, Cough Relief, Functionality-Overall. The return rate is 0.0%.
- **When does demand for guaifenesin liquid peak?**
- Demand peaks in Jan–Feb; the busiest month runs 2.3× the quietest.
- **What does it cost to enter the guaifenesin liquid niche?**
- Listings span $4.47–$19.19; the average listing price is $10.37 (sweet spot $15–$100). The average incumbent carries 2,085 reviews — the moat a new listing must climb.
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