---
title: "Theralac Probiotics — $121K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/theralac-probiotics"
last_updated: "2026-08-06T22:29:42.185Z"
locale: en
meta:
description: "Niche score 42/100 · $121K/yr market · 8K searches/yr · $71.90 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 42/100 · $121K/yr market · 8K searches/yr · $71.90 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Theralac Probiotics — $121K/yr Amazon US Niche (2026) - Flapen"
---
# **theralac probiotics**
**Skip it**
A concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.
Market size 28Growth 23Conversion 100Competition 0Returns 100Price range 86Avg price 85Brand share 0Review moat 75Quality gap 20
**Conversion**
**Incredible****21.0%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Price range**
**Great****$36.22–$108.32**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Avg price**
**Great****$71.90**
avg listing price — sweet spot $15–$100
**Review moat**
**Great****498.8**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Okay****$121K**
$121K/yr · 8K searches
**Growth**
**Bad****-4.7%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Competition**
**Bad****100%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
**Signals**[** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")
According to Flapen's Amazon United States niche tracking, theralac probiotics is a $121K/yr Amazon United States market (8K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 42/100.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **theralac probiotics market data**
- **Units sold / yr**
- **2K–2K**
- avg 250–500/product
- **Revenue / yr**
- **$108K–$144K**
- units × avg price
- **Conversion rate**
- **21.0%**
- **Avg BSR**
- **#2,704**
- **Page quality**
- **0%**
- **Prime**
- **80%**
- **Sponsored**
- **100%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **111 months**
- **Avg seller age**
- **169 days**
## **Competition & brand share**
The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**1 **▼falling
**Sellers**
**4**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**100%**
Top 20: 100%
**Open market**
**0%**
- THERALAC100%
## **Demand & seasonality**
Weekly Amazon search volume, last 97 weeks — -4.7% search growth over the last 90 days.
250150Spike '24Spike '25Spike '26 seasonDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.4×
[**Open Trend **](https://flapen.com/research/us/health-household/theralac-probiotics/trend)
## **Top theralac probiotics 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%15%$18K30%$36K45%$54K60%$73K101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 5 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Master Supplements Theralac - 30 Capsules Pack of 2 - Multi-Strain Probiotic for Optimal Gut Health + Gas & Bloating Relief - Gluten Free - 60 Servings**THERALAC**$73.08**4.7★812 rev](https://www.amazon.com/dp/B004QKS3IQ) [2**Master Supplements Theralac - 30 Capsules - Multi-Strain Probiotic for Optimal Gut Health + Gas & Bloating Relief - Gluten Free - 30 Servings**THERALAC**$36.22**4.7★812 rev](https://www.amazon.com/dp/B000T294Y2) [3**Master Supplements Granular Theralac - 1.05 oz - Multi-Strain Probiotic Powder for Optimal Gut Health - Great for Kids - Vegan Gluten Free - 40 Servings**THERALAC**$36.68**4.8★10 rev](https://www.amazon.com/dp/B01N6GA5XX) [4**Master Supplements 30-Day Probiotic Gut Reset - Includes Theralac (30 ct.) TruBifido (30 ct.) & TruFlora (30 ct.) - Supports Optimal Gut Health - Gluten Free**THERALAC**$105.20**4.5★48 rev](https://www.amazon.com/dp/B07BKPNPHG) [5**Master Supplements Theralac - 30 Capsules Pack of 3 - Multi-Strain Probiotic for Optimal Gut Health + Gas & Bloating Relief - Gluten Free - 90 Servings**THERALAC**$108.32**4.7★812 rev](https://www.amazon.com/dp/B01C39LOSM)
### **Newest**
by launch date
[**Master Supplements 30-Day Probiotic Gut Reset - Includes Theralac (30 ct.) TruBifido (30 ct.) & TruFlora (30 ct.) - Supports Optimal Gut Health - Gluten Free**THERALAC**$105.20**48 rev8y ago](https://www.amazon.com/dp/B07BKPNPHG) [**Master Supplements Theralac - 30 Capsules Pack of 3 - Multi-Strain Probiotic for Optimal Gut Health + Gas & Bloating Relief - Gluten Free - 90 Servings**THERALAC**$108.32**812 rev9y ago](https://www.amazon.com/dp/B01C39LOSM) [**Master Supplements Granular Theralac - 1.05 oz - Multi-Strain Probiotic Powder for Optimal Gut Health - Great for Kids - Vegan Gluten Free - 40 Servings**THERALAC**$36.68**10 rev9y ago](https://www.amazon.com/dp/B01N6GA5XX) [**Master Supplements Theralac - 30 Capsules Pack of 2 - Multi-Strain Probiotic for Optimal Gut Health + Gas & Bloating Relief - Gluten Free - 60 Servings**THERALAC**$73.08**812 rev16y ago](https://www.amazon.com/dp/B004QKS3IQ) [**Master Supplements Theralac - 30 Capsules - Multi-Strain Probiotic for Optimal Gut Health + Gas & Bloating Relief - Gluten Free - 30 Servings**THERALAC**$36.22**812 rev22y ago](https://www.amazon.com/dp/B000T294Y2)
### **Trending**
90-day click momentum
[**Master Supplements Theralac - 30 Capsules - Multi-Strain Probiotic for Optimal Gut Health + Gas & Bloating Relief - Gluten Free - 30 Servings**THERALAC**$36.22**4.7★**▲ 35%**](https://www.amazon.com/dp/B000T294Y2) [**Master Supplements Theralac - 30 Capsules Pack of 3 - Multi-Strain Probiotic for Optimal Gut Health + Gas & Bloating Relief - Gluten Free - 90 Servings**THERALAC**$108.32**4.7★**▲ 23%**](https://www.amazon.com/dp/B01C39LOSM) [**Master Supplements Granular Theralac - 1.05 oz - Multi-Strain Probiotic Powder for Optimal Gut Health - Great for Kids - Vegan Gluten Free - 40 Servings**THERALAC**$36.68**4.8★**▲ 15%**](https://www.amazon.com/dp/B01N6GA5XX) [**Master Supplements 30-Day Probiotic Gut Reset - Includes Theralac (30 ct.) TruBifido (30 ct.) & TruFlora (30 ct.) - Supports Optimal Gut Health - Gluten Free**THERALAC**$105.20**4.5★**— 5%**](https://www.amazon.com/dp/B07BKPNPHG) [**Master Supplements Theralac - 30 Capsules Pack of 2 - Multi-Strain Probiotic for Optimal Gut Health + Gas & Bloating Relief - Gluten Free - 60 Servings**THERALAC**$73.08**4.7★**▼ 18%**](https://www.amazon.com/dp/B004QKS3IQ)
## **What buyers say about theralac probiotics**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Nutritional Content**63%
*“Best probiotic”*
**Quality-Overall**25%
*“Good product”*
**Efficiency**13%
*“Works very well”*
## **Common questions**
- **Is theralac probiotics profitable to sell on Amazon United States?**
- The niche generates $121K/yr across 5 tracked products. 90-day search growth is -4.7%. Flapen's verdict: Skip it (42/100).
- **How competitive is the theralac probiotics niche?**
- 1 brands and 4 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
- **When does demand for theralac probiotics peak?**
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- **What does it cost to enter the theralac probiotics niche?**
- Listings span $36.22–$108.32; the average listing price is $71.90 (sweet spot $15–$100). The average incumbent carries 499 reviews — the moat a new listing must climb.
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