---
title: "Tmg — £66K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/health-personal-care/tmg"
last_updated: "2026-07-31T10:28:52.831Z"
locale: en
meta:
description: "Niche score 51/100 · £66K/yr market · 47K searches/yr · £11.76 avg price. A small market ($66K/yr) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 51/100 · £66K/yr market · 47K searches/yr · £11.76 avg price. A small market ($66K/yr) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Tmg — £66K/yr Amazon UK Niche (2026) - Flapen"
---
# **tmg**
**Worth a look**
Shows low returns (0.0%), but a small market ($66K/yr) keeps it on the watch list.
Market size 17Growth 19Conversion 95Competition 30Returns 100Price range 39Avg price 48Brand share 64Review moat 95Quality gap 63
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****12.0%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Great****100.58**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Good****67%**
top-5 brand share — brands hold most of the demand
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Avg price**
**Okay****£11.76**
avg listing price — sweet spot $15–$100
**Price range**
**Okay****£4.91–£21.42**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Okay****67%**
top-5 click share — leaders hold, buyers still browse
**Growth**
**Bad****-12.8%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****£66K**
£66K/yr · 47K searches
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=uk&signal=low_review_barrier "Top brand's reviews < 500")
According to Flapen's Amazon United Kingdom niche tracking, tmg is a £66K/yr Amazon United Kingdom market (47K searches/yr). The top 5 brands hold 67% of demand. Demand peaks in Feb–Mar–Apr. Verdict: Worth a look — 51/100.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **tmg market data**
- **Units sold / yr**
- **5K–6K**
- avg 100–250/product
- **Revenue / yr**
- **£59K–£71K**
- units × avg price
- **Conversion rate**
- **12.0%**
- **Avg BSR**
- **#1,597**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **68%**
- **Out of stock**
- **5.9%**
- **Avg brand age**
- **46 months**
- **Avg seller age**
- **188 days**
## **Competition & brand share**
The top 5 products take 67% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**18 **▲rising
**Sellers**
**17**
**Top-5 brand share**
**67%**
Top 20: 100%
**Top-5 click share**
**67%**
Top 20: 100%
**Open market**
**28%**
- Longevity Box24% - MetaSuperfoods16% - Vitamatic15% - NOW6% - Pure: Vitality5% - vP Vitality Pro5%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -12.8% search growth over the last 90 days.
4K3KSpike '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Feb, Mar, Apr · busiest ÷ quietest = 2.8×
[**Open Trend **](https://flapen.com/research/uk/health-personal-care/tmg/trend)
## **Top tmg search terms**
- **tmg**24K/yr-10.5%11.6% conv. - **tmg supplement**14K/yr-15.1%10.3% conv. - **trimethylglycine**7K/yr-6.6%8.1% conv. - **tmg supplements uk**2K/yr-94.1%0.0% conv. [**All search terms **](https://flapen.com/research/uk/health-personal-care/tmg/search-terms)
## **Top tmg 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%£7K20%£13K30%£20K40%£26K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 19 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Longevity Box TMG 750mg 120 Capsules | 99% Pure Trimethylglycine (Betaine) | Supports DNA Methylation Liver & Heart Health | Vegan Non-GMO**Longevity Box**£15.25**4.3★293 rev](https://www.amazon.co.uk/dp/B0BVJ9Y1Q1) [2**TMG 120 Capsules (1200mg) 99% Pure Trimethylglycine Supplement as Betaine | High Strength 1-A-Day | 4 Months Supply | Liver Heart Health | Liposomal Delivery for Max Absorption Longevity Vegan**MetaSuperfoods**£13.22**4.4★126 rev](https://www.amazon.co.uk/dp/B0DQXTNN35) [3**Vitamatic TMG Supplements 1000mg - Trimethylglycine - Betaine Anhydrous - 120 Tablets - 120 Servings - Non-GMO & Gluten Free**Vitamatic**£9.04**4.2★390 rev](https://www.amazon.co.uk/dp/B0CP4YTZVP) [4**Now Foods TMG (Trimethylglycine) 1.000mg 100 Vegan Tablets Lab-Tested High Dose Betaine Gluten Free SOYA Free Vegetarian**NOW**£21.42**4.5★230 rev](https://www.amazon.co.uk/dp/B09HXSRDPV) [5**Pure Vitality: TMG - 500mg x 90 Capsules - Ultra Pure 99% Trimethylglycine As Betaine High Strength TMG DNA Production Enhance Liver & Heart Function 3rd Party Certified Vegan & Non-GMO**Pure: Vitality**£8.28**4.3★53 rev](https://www.amazon.co.uk/dp/B0DD7V5Q4G)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Welzo Ultra High Purity TMG 1000mg Pure Trimethylglycine Betaine Anhydrous Cellular Methylation & Cardiovascular Support Supplement Third-Party Tested 60 Capsules**welzo**£16.87**5 rev2mo ago](https://www.amazon.co.uk/dp/B0H21Y3J49) [**TMG 750mg Trimethylglycine (Betaine) | 180 Vegan Capsules | 99%+ Pure Methyl Donor for Normal Homocysteine Metabolism | High Strength | Lab Tested Supplement | Made in Denmark | Source of Nature**Source of Nature**£12.33**21 rev9mo ago](https://www.amazon.co.uk/dp/B0FWCFDKPB) [**Longevix Pure TMG 1000mg 100% Trimethylglycine (Betaine) | (50 Servings) | Vegan Non-GMO Supports Methylation Homocysteine & Liver Health | 3rd Party Tested Supplement**LONGEVIX**£16.52**40 rev9mo ago](https://www.amazon.co.uk/dp/B0FQVW38FV) [**TMG Supplement 500mg per Capsule | Pure High Strength Trimethylglycine (TMG) Supplement | 60 Capsules | Non-GMO | Made in The UK**NEO-NUTRITION**£7.77**3 rev10mo ago](https://www.amazon.co.uk/dp/B0FPWWPNJX) [**Vitamatic TMG Supplements 1000mg - Trimethylglycine - Betaine Anhydrous - 120 Tablets - 120 Servings - Non-GMO & Gluten Free**Vitamatic**£9.04**390 rev11mo ago](https://www.amazon.co.uk/dp/B0CP4YTZVP)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Welzo Ultra High Purity TMG 1000mg Pure Trimethylglycine Betaine Anhydrous Cellular Methylation & Cardiovascular Support Supplement Third-Party Tested 60 Capsules**welzo**£16.87**5.0★**▲ 379%**](https://www.amazon.co.uk/dp/B0H21Y3J49) [**TMG Supplement 500mg per Capsule | Pure High Strength Trimethylglycine (TMG) Supplement | 60 Capsules | Non-GMO | Made in The UK**NEO-NUTRITION**£7.77**3.2★**▲ 108%**](https://www.amazon.co.uk/dp/B0FPWWPNJX) [**TMG 750mg Trimethylglycine (Betaine) | 180 Vegan Capsules | 99%+ Pure Methyl Donor for Normal Homocysteine Metabolism | High Strength | Lab Tested Supplement | Made in Denmark | Source of Nature**Source of Nature**£12.33**4.7★**▲ 87%**](https://www.amazon.co.uk/dp/B0FWCFDKPB) [**TMG Trimethylglycine Capsules | 500mg Per Capsule | 60 Vegan HPMC Capsules | Supports Methylation Homocysteine Metabolism & Cellular Function | Non-GMO | Gluten-Free**Bolman Health**£9.73**4.2★**▲ 47%**](https://www.amazon.co.uk/dp/B0DRW43RHY) [**Vitamatic TMG Supplements 1000mg - Trimethylglycine - Betaine Anhydrous - 120 Tablets - 120 Servings - Non-GMO & Gluten Free**Vitamatic**£9.04**4.2★**▲ 36%**](https://www.amazon.co.uk/dp/B0CP4YTZVP)
**~~View all trending →~~**
## **What buyers say about tmg**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**13%
*“The quality of the powder seems good”*
**Value For Money**9%
*“at a reasonable price”*
**Ease Of Use**7%
*“simple to use”*
**Dosage**7%
*“Clear dosing, clean ingredients, and good value for the number of capsules”*
**Energy Level**5%
*“Tmg very good same as creatine for energy”*
**Solubility**5%
*“I like that it is a powder as I can mix it with my shake or smoothie”*
**Focus Enhancement**5%
*“Good for focus”*
**Ingredients-Overall**4%
*“clean ingredients”*
**Taste-Overall**4%
*“I really like these, really fresh tasting and fruity”*
**Vegan/Organic**3%
*“The capsules are liquid vegan, lab tested, gluten free, soya free and vegetarian, which is a huge plus”*
### **What buyers complain about **
**Size-Overall**7%
*“Tablets bit big”*
**Ingredients-Overall**6%
*“Ingredient list is too generic”*
**Quality-Overall**6%
*“Wouldnt have thought it would have passed QC”*
**Taste-Overall**6%
*“its the wrong colour texture and taste”*
**Dosage**6%
*“especially as I tend to take a high-ish dose which is rather inconvenient in capsule form”*
**Ease Of Chewing/Swallowing**5%
*“Pills hard to swallow”*
**Value For Money**4%
*“It is expensive”*
**Durability**3%
*“after a few weeks the capsules start to degrade”*
**Regulates Digestion**3%
*“The pills are large and rough, making me almost choke while taking it at least a couple of times a week”*
**Color**3%
*“its the wrong colour texture and taste”*
### **Top return reasons **
**Leak-Proof**100%
## **Common questions**
- **Is tmg profitable to sell on Amazon United Kingdom?**
- The niche generates £66K/yr across 19 tracked products. 0 of 6 products launched in the last 360 days are still selling. 90-day search growth is -12.8%. Flapen's verdict: Worth a look (51/100).
- **How competitive is the tmg niche?**
- 18 brands and 17 sellers compete. The top 5 products take 67% of clicks and top 5 brands hold 67% of demand.
- **What do buyers complain about in tmg?**
- Top complaints mined from reviews: Size-Overall, Ingredients-Overall, Quality-Overall. The return rate is 0.0%.
- **When does demand for tmg peak?**
- Demand peaks in Feb–Mar–Apr; the busiest month runs 2.8× the quietest.
- **What does it cost to enter the tmg niche?**
- Listings span £4.91–£21.42; the average listing price is £11.76 (sweet spot $15–$100). The average incumbent carries 101 reviews — the moat a new listing must climb.
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