spring valley l-lysine 1000mg capsules
Skip itA small market ($12K/yr) — this niche doesn't clear our bar today.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Conversion
Incredible16.1%search→purchase rate — share of searches ending in a sale
Avg price
Good$14.86avg listing price — sweet spot $15–$100
Price range
Good$6.46–$26.27cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Okay+0.5%90-day search growth — must beat 0% to launch
Review moat
Bad7,106.13avg incumbent reviews — the moat a new listing must climb
Quality gap
Bad4.8★avg incumbent rating — lower means beatable quality
Brand share
Bad97%top-5 brand share — brand-locked demand
Competition
Bad92%top-5 click share — a locked-up shelf
Market size
Bad$12K$12K/yr · 5K searches
According to Flapen's Amazon United States niche tracking, spring valley l-lysine 1000mg capsules is a $12K/yr Amazon United States market (5K searches/yr). The top 5 brands hold 97% of demand. Demand peaks in Feb. Verdict: Skip it — 35/100.
Data updated Jul 25, 2026 · scored weekly · How we score niches
spring valley l-lysine 1000mg capsules market data
- Units sold / yr
- 500–750
- avg 100–250/product
- Revenue / yr
- $7K–$11K
- units × avg price
- Conversion rate
- 16.1%
- Avg BSR
- #150
- Page quality
- 0%
- Prime
- 75%
- Sponsored
- 75%
- Out of stock
- 6.2%
- Avg brand age
- 125 months
- Avg seller age
- 175 days
Competition & brand share
The top 5 products capture 92% of clicks — a locked-up shelf that new listings rarely crack.Brands
6 rising
Sellers
54
Top-5 brand share
97%
Top 20: 100%
Top-5 click share
92%
Top 20: 100%
Open market
0%
- FCQP47%
- LUAL19%
- Generic13%
- NOW Foods11%
- Nature Made8%
- Pure Encapsulations3%
Demand & seasonality
Weekly Amazon search volume, last 78 weeks — +0.5% search growth over the last 90 days.Peak months: Feb · busiest ÷ quietest = 6.3×
Top spring valley l-lysine 1000mg capsules search terms
- spring valley l-lysine 1000mg capsules2K/yr
- l lysine 1000mg capsules spring valley652/yr
- lysine spring valley610/yr
- l lysine spring valley501/yr
- l-lysine spring valley421/yr
- spring valley l-lysine438/yr
- l-lysine 1000mg capsules spring valley216/yr
- spring valley lysine 1000mg capsules223/yr
Top spring valley l-lysine 1000mg capsules 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.
All 8 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Spring Valley L-Lysine Dietary Supplement 1000mg 100 Tablets
FCQP$12.664.8★8 rev
Spring Valley L-Lysine 1000mg Tablets 100 Count | Essential Amino Acid Supplement for Daily Wellness + Lualls Free Digital eBook
LUAL$16.044.6★102 rev
NOW Foods Supplements (L-Lysine Hydrochloride) 1 000 mg Double Strength Amino Acid 100 Tablets
NOW Foods$8.444.6★38,103 rev
L-Lysine 1000mg 100 Tablets Essential Amino Acid for Immune Support Collagen & Lip Health Comparable to Leading Brand (Pack-1)
Generic$16.185.0★1 rev
Nature Made L-Lysine 1000 mg Dietary L-Lysine Supplements 60 Tablets 60 Day Supply
Nature Made$6.464.6★12,920 rev
Newest
by launch date
L Lysine 500mg Tablets Super Lysine Immune Support & Healthy Skin 250 Count (Pack 1)
Generic$17.9923 rev
Spring Valley L-Lysine Dietary Supplement 1000mg 100 Tablets
FCQP$12.668 rev
L-Lysine 1000mg Tablets Lysine Essential Amino Acid for Immune Support Collagen Formation and Skin Health High Potency Lysine Supplement 100 Count Gluten-Free
Generic$26.274 rev
L-Lysine 1000mg 100 Tablets Essential Amino Acid for Immune Support Collagen & Lip Health Comparable to Leading Brand (Pack-1)
Generic$16.181 rev
Spring Valley L-Lysine 1000mg Tablets 100 Count | Essential Amino Acid Supplement for Daily Wellness + Lualls Free Digital eBook
LUAL$16.04102 rev
Trending
90-day click momentumSpring Valley L-Lysine Dietary Supplement 1000mg 100 Tablets
FCQP$12.664.8★
L-Lysine 1000mg 100 Tablets Essential Amino Acid for Immune Support Collagen & Lip Health Comparable to Leading Brand (Pack-1)
Generic$16.185.0★
L-Lysine 1000mg Tablets Lysine Essential Amino Acid for Immune Support Collagen Formation and Skin Health High Potency Lysine Supplement 100 Count Gluten-Free
Generic$26.275.0★
NOW Foods Supplements (L-Lysine Hydrochloride) 1 000 mg Double Strength Amino Acid 100 Tablets
NOW Foods$8.444.6★
Pure Encapsulations L-Lysine - Essential Amino Acid Supplement for Immune Support & Gum Lip Health* - with L-Lysine HCl - 90 Capsules
Pure Encapsulations$14.854.8★
What buyers say about spring valley l-lysine 1000mg capsules
What buyers praise and complain about, mined from review topics.What buyers love
“Super Effective for Cold Sores”
“Great vitamin supplement”
“Affordable”
“Good quality and trusted brand”
“Great value if it works as advertised”
“Works great for fever blisters”
“I highly recommend for acne, cystic acne, and cold sores”
“Quick boost immunity support”
“Theyre effective,”
“This is a high dosage that I can take at the onset of one”
What buyers complain about
“Too big”
“Not sure it will get into mouth”
“It didnt help”
“They don't do well in the bottle”
“They were painful and embarrassing”
“diarrhea for 3 days I had to stop”
“they are so hard that I couldn't even break them into two”
“cold temps always caused cold sores for at least one of us”
“My go to for mouth sore”
“There are no soy or corn ingredients in this supplement”
Top return reasons
Common questions
- Is spring valley l-lysine 1000mg capsules profitable to sell on Amazon United States?
- The niche generates $12K/yr across 8 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +0.5%. Flapen's verdict: Skip it (35/100).
- How competitive is the spring valley l-lysine 1000mg capsules niche?
- 6 brands and 54 sellers compete. The top 5 products take 92% of clicks and top 5 brands hold 97% of demand.
- What do buyers complain about in spring valley l-lysine 1000mg capsules?
- Top complaints mined from reviews: Size-Overall, Ease Of Chewing/Swallowing, Functionality-Overall. The return rate is 0.0%.
- When does demand for spring valley l-lysine 1000mg capsules peak?
- Demand peaks in Feb; the busiest month runs 6.3× the quietest.
- What does it cost to enter the spring valley l-lysine 1000mg capsules niche?
- Listings span $6.46–$26.27; the average listing price is $14.86 (sweet spot $15–$100). The average incumbent carries 7,106 reviews — the moat a new listing must climb.