Is methylene blue profitable to sell on Amazon Singapore?

The niche generates $5K/yr across 3 tracked products. 90-day search growth is -24.9%. Flapen's verdict: Skip it (37/100).

How competitive is the methylene blue niche?

2 brands and 13 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.

What does it cost to enter the methylene blue niche?

Listings span $31.77–$55.93; the average listing price is $44.31 (sweet spot $15–$100). The average incumbent carries 310 reviews — the moat a new listing must climb.

methylene blue

Skip it

A concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Incredible$44.31

avg listing price — sweet spot $15–$100

Price range

Incredible$31.77–$55.93

cheapest to priciest tracked listing — scored on the share inside $15–$100

Review moat

Great310.33

avg incumbent reviews — the moat a new listing must climb

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Conversion

Good4.3%

search→purchase rate — share of searches ending in a sale

Growth

Bad-24.9%

90-day search growth — must beat 0% to launch

Market size

Bad$5K

$5K/yr · 3K searches

Competition

Bad100%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

According to Flapen's Amazon Singapore niche tracking, methylene blue is a $5K/yr Amazon Singapore market (3K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 37/100.

Data updated Jul 24, 2026 · scored weekly · How we score niches

methylene blue market data

Units sold / yr: 100–250; avg 0–100/product
Revenue / yr: $4K–$11K; units × avg price
Conversion rate: 4.3%
Avg BSR: #163
Page quality: 0%
Prime: 100%
Sponsored: 0%
Out of stock: 48.9%
Avg brand age: 31 months
Avg seller age: 0 days

Competition & brand share

The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.

Brands

2 falling

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

100%

Top 20: 100%

Open market

PureGood84%
HelloPharmacist16%

Demand

Weekly Amazon search volume, last 44 weeks — -24.9% search growth over the last 90 days.

Open Trend

Top methylene blue 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 3 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

3 Pack Methylene Blue 1% Solution (60 mL) Pharmaceutical Grade USP-Grade Third-Party Tested Formaldehyde and Alcohol Free Amber Dropper Bottles

PureGood$55.934.6★27 rev

Pharmaceutical Grade Methylene Blue 1% (60 mL) USP-Grade Third-Party Tested Alcohol & Formaldehyde Free in Amber Dropper Bottle

PureGood$45.234.2★742 rev

HelloPharmacist NeuroBoost Methylene Blue 1% - 2Oz (60 mL) - Pharmaceutical USP Grade 99.99% Purity - Lab Certified - Made In The USA - 1mL Graduated Dropper (10mg/1mL) - Trusted HelloPharmacist Brand

HelloPharmacist$31.774.3★162 rev

Newest

by launch date

3 Pack Methylene Blue 1% Solution (60 mL) Pharmaceutical Grade USP-Grade Third-Party Tested Formaldehyde and Alcohol Free Amber Dropper Bottles

PureGood$55.9327 rev

1y ago

HelloPharmacist$31.77162 rev