Best Selling L Serine: See Top Product Rankings by Sales Volume & Market Trends

July 2026
109 Products Tracked

Looking for the most popular l serine products in the market? Our report leverages real Amazon monthly sales data to identify the best-performing products and the fastest-growing opportunities within the search results for the keyword "l serine." Whether you're searching for winning products to launch or monitoring market trends and competitor performance, this report provides the insights you need.

Based on monthly sales analytics, our Shoppers' Top Picks highlights that ASIN B01B3RWQNM currently leads the l serine market with 30K monthly sales, followed closely by B000Z9361G with 20K monthly sales and B00TXY32FY with 20K monthly sales. Meanwhile, ASIN B000Z9361G stands out as the fastest-growing product, achieving an impressive 100.0% month-over-month sales growth. By tracking competitor sales performance and shifts in market demand, sellers can uncover emerging opportunities and make more informed product and marketing decisions.

🏆Shoppers' Top PicksAmazon
by monthly sales July 2026
Nutricost L-Theanine 200mg, 120 Capsules, Double Strength - Non-GMO, Gluten Free
1
B01B3RWQNM
$11.95·
4.7
Units/sold30K
NOW Foods Supplements, (L-Lysine Hydrochloride) 1,000 mg, Double Strength, Amino Acid, 100 Tablets
2
B000Z9361G
$6.92·
4.6
Units/sold20K
Sports Research Double Strength L-Theanine Supplement - Suntheanine Softgels for Focus, Relaxation & Alertness - Non-Drowsy Support Made with Coconut Oil, Non-GMO & Gluten Free - 200mg, 60 Count
3
B00TXY32FY
$19.95·
4.5
Units/sold20K
🚀Fastest Growing
by MoM sales growth
NOW Foods Supplements, (L-Lysine Hydrochloride) 1,000 mg, Double Strength, Amino Acid, 100 Tablets
#1
B000Z9361G
$6.92·
4.6
NOW Foods Supplements, (L-Lysine Hydrochloride) 1,000 mg, Double Strength, Amino Acid, 100 Tablets
Units/sold
20K100.0%
Sports Research Double Strength L-Theanine Supplement - Suntheanine Softgels for Focus, Relaxation & Alertness - Non-Drowsy Support Made with Coconut Oil, Non-GMO & Gluten Free - 200mg, 60 Count
#2
B00TXY32FY
$19.95·
4.5
Sports Research Double Strength L-Theanine Supplement - Suntheanine Softgels for Focus, Relaxation & Alertness - Non-Drowsy Support Made with Coconut Oil, Non-GMO & Gluten Free - 200mg, 60 Count
Units/sold
20K100.0%

Top Selling L Serine

As of July 2026, we analyzed 109 tracked products in Amazon's "l serine" search results and generated the following sales chart and product rankings based on monthly sales data. The ranking below highlights the Top 10 products by estimated monthly sales. According to the latest data, these products generated between 4,000 and 30,000 monthly sales. B01B3RWQNM leads the l serine market with an estimated 30,000 monthly sales, up 2.0% from the previous month.

109Products Tracked
12,400Top 10 Avg. Sales
$17.31Top 10 Avg. Price
4.6Top 10 Avg. Rating
🏆
Nutricost L-Theanine 200mg, 120 Capsules, Double Strength - Non-GMO, Gluten Free
#1
B01B3RWQNM

Nutricost L-Theanine 200mg, 120 Capsules, Double Strength - Non-GMO, Gluten Free

30,000
▲ 2.0%
Units Sold/mo
$11.95
Price
4.7
Rating
12.8K
Reviews
2
NOW Foods Supplements, (L-Lysine Hydrochloride) 1,000 mg, Double Strength, Amino Acid, 100 Tablets
B000Z9361G
$6.92
4.6 (38K)
NOW Foods Supplements, (L-Lysine Hydrochloride) 1,000 mg, Double Strength, Amino Acid, 100 Tablets
20,000 Units Sold/mo▲ 100.0%
3
Sports Research Double Strength L-Theanine Supplement - Suntheanine Softgels for Focus, Relaxation & Alertness - Non-Drowsy Support Made with Coconut Oil, Non-GMO & Gluten Free - 200mg, 60 Count
B00TXY32FY
$19.95
4.5 (15.2K)
Sports Research Double Strength L-Theanine Supplement - Suntheanine Softgels for Focus, Relaxation & Alertness - Non-Drowsy Support Made with Coconut Oil, Non-GMO & Gluten Free - 200mg, 60 Count
20,000 Units Sold/mo▲ 100.0%
4
Pure Encapsulations L-Lysine - Essential Amino Acid Supplement for Immune Support & Gum, Lip Health* - with L-Lysine HCl - 90 Capsules
B000H85JYC
$15.50
4.8 (5.7K)
Pure Encapsulations L-Lysine - Essential Amino Acid Supplement for Immune Support & Gum, Lip Health* - with L-Lysine HCl - 90 Capsules
10,000 Units Sold/mo▲ 25.0%
5
Life Extension Glycine, 1000 mg, Amino Acid that Promotes Healthy Sleep, Gluten-Free, Non-GMO, Vegetarian, 100 Capsules
B00B35A394
$12.00
4.6 (3.3K)
Life Extension Glycine, 1000 mg, Amino Acid that Promotes Healthy Sleep, Gluten-Free, Non-GMO, Vegetarian, 100 Capsules
10,000 Units Sold/mo▲ 42.9%
10
Solgar L-Lysine 1000 mg, 250 Tablets - Enhanced Absorption and Assimilation - Promotes Integrity of Skin and Lips - Collagen Support - Amino Acids - Non-GMO, Vegan, Gluten Free - 250 Servings
B00014WXQO
$23.01
4.7 (6.4K)
Solgar L-Lysine 1000 mg, 250 Tablets - Enhanced Absorption and Assimilation - Promotes Integrity of Skin and Lips - Collagen Support - Amino Acids - Non-GMO, Vegan, Gluten Free - 250 Servings
4,000 Units Sold/mo▲ 3.0%
View All 109 Products & Deep InsightsGet full access to sales data, trends, and market analysis

For sellers and category managers benchmarking the l serine price landscape, we segmented all 109 tracked listings in Amazon's live "l serine" search results across the full price spectrum, and surfaced the top 3 price tiers by share below to highlight where competition concentrates and where pricing gaps exist.

Leading the distribution, the $20.00 ~ $50.00 band is the category's best l serine price zone, absorbing 47% of the assortment (153 products) — this is where listing density is highest and where new entrants face the steepest competition for share-of-voice. Use the tier breakdown below to identify the top-ranking ASIN, monthly sales velocity, and rating profile within each band — essential inputs for pricing strategy, sourcing decisions, and competitive benchmarking in the l serine category.

Top 3 Price Tiers

$20.00 ~ $50.00 is the most competitive price tier, containing 47% of tracked products.

Sweet Spot
$20.00 ~ $50.00
Tier 1
47%
153 products

Top products in this price tier

#1
B01B3RWQNM
$11.95
30k Units Sold/mo
Unlock Top Performers
#2
$10.00 ~ $20.00
Tier 2
30%
100 products
$50.00 ~ $100.00
Tier 3
12%
40 products
$0.00 ~ $10.00
7%
Unlock to view all price tier distributions and their ASIN sales contributions

"L serine" Search Volume and Market Trends on Amazon

Amazon keyword search volume data for "l serine" in the US marketplace. This report provides insights into keyword search volume, Amazon search trends, competition levels, and conversion efficiency for sellers and brands.

During the week of 2026-06-28 to 2026-07-04, the Amazon USweekly search volume for "l serine" was approximately 203 searches. The keyword currently holds an Amazon Search Frequency Rank (SFR) of #871,391, dropping 244,332 positions from the previous week. Additionally, the top 3 products for this keyword capture 53.2% of the total click share and 48.7% of the conversion share, indicating the level of market concentration.

Amazon Search Term
Weekly

l serine

ASINSIGHT
Search Frequency Rank
871,391
244,332
Search Volume
203
29.3%
Top 3 Click Share
53.2%
Top 3 Conv. Share
48.7%

Search Volume Trend

Past 3 Years
Past 4 Months
Recent 8 months
Weekly Search Volume
203
View full trends for the past 3 years
JulAugSepOctNovDecJanFebMarAprMayJun
Multi-Dimensional Data

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