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Glycine

a concentrated shelf (top 5 take 88% of clicks) — Glycine doesn't clear our bar today.

Flapen Score

45
Skip it

Ranks 275 of 371 Health niches · −6 vs the category median of 51

Market size 59Growth 23Conversion 96Competition 10Returns 100Price range 28Avg price 72Brand share 19Review moat 44Quality gap 22
This niche Category average · 371 niches

Is Glycine profitable on Amazon?

According to Flapen's Amazon United Arab Emirates niche tracking, Glycine is a $473K/yr Amazon United Arab Emirates market (32K searches/yr). The top 5 brands hold 92% of demand. Verdict: Skip it — 45/100.

Glycine: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Not really. Search demand moved -3.4% over the last 90 days and 13.4% of searches end in a purchase.

$473K

revenue / yr

Units sold / yr5K
Search volume / yr-3.4%32K
Conversion rate13.4%
Avg price$109.59

Who owns the niche?

The top 5 brands hold 92% of demand, so 8% of the market is open.

8%

open market share

Brands · sellers7 · 23
Top-5 product click share88%
Open market8%
Avg brand age74 months

Is there a way in?

Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.7★ — the gap to enter on.

0/100

page quality · 8 products

Sponsored placement25%
New entrants (1y)0· 0 succeeded
Avg rating4.7★
Avg reviews2,141

Top Glycine products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

Competition: brands, sellers & click share

The top 5 products capture 88% of clicks — a locked-up shelf that new listings rarely crack.

$0$47K$95K$142K$189K1001K10K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

7 flat

Sellers

23

Top-5 brand share

92%

Top 20: 100%

Top-5 click share

88%

Top 20: 100%

Open market

2%

  • THORNE26%
  • NOW25%
  • Nutricost18%
  • Double Wood Supplements15%
  • Micro Ingredients8%
  • Life Extension5%
  • Open — no brand owns it (1 brand, 2%)

Glycine demand & seasonality

Weekly search volume, with the niche's key stats alongside.

Volume32KCVR13.4%Products8Brands7Top 5 Brands92%OOS Rate0.8%Rating4.7★Reviews2,141Avg BSR#127
1K600Spike '26Apr '26Apr '26May '26May '26May '26Jun '26Jun '26Jul '26

What reviews say buyers love and hate about Glycine

What buyers mention most, as a share of all reviews.

What buyers love

100% of reviews
جودة النوم25%

It helps me sleep at night

الجودة الشاملة25%

Reliable product

الجرعة25%

Working well, great dosage

القيمة مقابل المال13%

Value for money

المكونات-إجمالاً13%

Good Glycine powder effective

What buyers complain about

100% of reviews
الحجم الكلي100%

Small size

Common Glycine questions

The questions sellers ask about this niche, answered from the tracked metrics.

Flapen scores Glycine 45/100 on Amazon United Arab Emirates — Skip it. The niche generates $473K/yr across 8 tracked products. Search demand moved -3.4% over the last 90 days.
Glycine buyers on Amazon United Arab Emirates complain most about الحجم الكلي, the themes mined from the niche's reviews. Its return rate is 0.1%.