Summary
Build Your Brand is an FDA-registered, GMP-certified contract manufacturer specializing in L-theanine supplements and private label L-theanine supplement products. Based in the USA with over 15 years of experience and 500+ brands served, we offer turnkey manufacturing from custom formulation through packaging and fulfillment. Our facility maintains NSF International certification and all products undergo third-party testing through ISO 17025 accredited laboratories.
Services
- Custom formulation and product development for L-theanine supplement products
- Low minimum order quantities starting at 300 units
- Third-party laboratory testing for potency, purity, and safety
- Full packaging design, label compliance, and fulfillment services
- Amazon FBA prep and direct-to-consumer shipping
Frequently Asked Questions
What is the typical clinical dose for L-theanine?
Published human trials use doses ranging from 100 mg to 400 mg. 100 mg is the most common dose for daytime focus positioning and caffeine-pairing products, 200 mg is standard in bedtime sleep stacks, and 400 mg appears in acute-stress clinical studies. We formulate across this full range depending on your positioning and cost-per-dose targets.
Suntheanine vs generic L-theanine — which do you use?
We source both. Suntheanine is a trademarked, fermentation-derived L-theanine produced via a proprietary microbial process and is the form used in the strongest published human clinical trials; it commands a premium and suits clean-label, science-backed positioning. High-purity generic L-theanine is molecularly identical (pure L-enantiomer) and costs meaningfully less — the right choice for volume-priced SKUs. Both come with full COAs; the decision is brand positioning and unit economics, not efficacy parity.
Can you formulate L-theanine with caffeine for nootropic coffee or energy products?
Yes. The 2:1 L-theanine-to-caffeine ratio (200 mg L-theanine + 100 mg caffeine) is the signature focus-pairing formulation and our most common nootropic request. We produce this stack in capsules (clinical positioning), stick packs (functional coffee), ready-to-mix powders (energy drinks), and low-sugar gummies (mainstream focus products). L-theanine is also a natural stack partner for caffeine-sensitive consumers because it blunts the jittery edge of caffeine without reducing the cognitive lift.
What ingredients stack well with L-theanine?
The most evidence-backed L-theanine stack partners are caffeine (100 mg — the signature focus pair), GABA (100–200 mg — enhanced calm for bedtime), magnesium glycinate (400 mg — sleep stack co-factor), apigenin (50 mg — Huberman sleep protocol), L-tyrosine (500 mg — stress performance), and ashwagandha KSM-66 (300 mg — adaptogen stress modulation). We formulate custom combinations based on your target use case.
What formats can you manufacture for L-theanine supplements?
We produce L-theanine capsules (MOQ 3,000 units, the clinical-dose format), low-sugar gummies (MOQ 500 units, typically 25–50 mg per piece for bedtime chews or 100 mg for focus gummies), single-serve powder sachets (MOQ 3,000 units), stick packs for functional coffee (MOQ 3,000 units), ready-to-mix focus powders, and fast-melt sublinguals (MOQ 1,000 units). Format choice materially affects unit economics and positioning — we help you model which is right for your target shelf price and consumer.
What is the MOQ and lead time for private label L-theanine supplements?
Gummy formats start at 500 units per SKU for stock formulations with custom labeling. Capsule, sachet, and stick-pack formats start at 3,000 units. Sublinguals start at 1,000 units. Stock formulations ship in 3–4 weeks with approved artwork. Custom formulations with new ingredient sourcing require 4–6 weeks from approved formula. First orders should allow 8–10 weeks from inquiry to finished goods to account for sampling, artwork, and regulatory review.
- Clinical Dose Range
- 100–400mg
- Premium Fermented Grade
- Suntheanine
- MOQ (Gummies)
- 500+
- Lead Time
- 4–6 wk
Private Label L-Theanine Supplement Manufacturing
L-theanine — the naturally occurring amino acid found almost exclusively in green tea leaves (Camellia sinensis) — has become the defining calm-focus ingredient of the modern supplement market. Search demand has grown +57% year-over-year per industry keyword research, driven by the Huberman protocol, mainstream awareness of alpha-wave brain activity, and a broad consumer shift away from pharmaceutical-feeling calm solutions toward food-derived alternatives. Unlike most calming compounds, L-theanine produces a distinct "alert calm" state — reducing perceived stress without sedation — which is why it has found equally strong positioning in daytime focus stacks, bedtime rituals, and caffeine-pairing nootropic drinks.
Our L-theanine manufacturing program covers every clinically relevant dose range and every meaningful delivery format. 100 mg capsules for daytime focus positioning, 200 mg capsules for sleep-stack partners, single-serve powder sachets for mix-in calm beverages, low-sugar gummies for mainstream bedtime products, and caffeine-pairing capsules for the fast-growing nootropic coffee segment. We source both Suntheanine — the trademarked, Japanese-fermented grade used in the majority of published human clinical trials — and high-purity non-branded L-theanine for volume-priced SKUs. Common stack partners include caffeine (the signature focus pairing), GABA, magnesium glycinate, apigenin, and L-tyrosine, all dosed at clinically meaningful levels rather than the label-dressing amounts common in mass-market products.
Whether you are launching a standalone L-theanine SKU, adding a calm-focus product to an existing line, or building a full wind-down or nootropic coffee collection, our private label partnership provides the formulation depth, regulatory review, and production flexibility to bring your concept to market. Every batch is produced in our FDA-registered, cGMP-certified facility with third-party potency, identity, and contaminant testing — the quality credentials that calm-focus consumers increasingly demand before they trust a brand with their cognition and mood.
Why Choose Us as Your Manufacturer?
We provide end-to-end solutions from formulation to fulfillment, ensuring your L-theanine supplement products meet the highest quality standards.
Premium Ingredients
Sourced globally from verified suppliers to ensure maximum potency and purity for your L-theanine supplements.
FDA Registered & GMP
Manufactured in strictly audited, certified facilities right here in the USA with complete lot traceability and third-party verification.
Low Minimums
Launch your business faster with approachable MOQs designed for scaling brands. Start small, grow confidently, and never outpace your inventory.
Our Manufacturing Process
From initial concept to finished product, every step is managed under one roof with dedicated quality oversight and transparent communication.
L-Theanine Formula Design
Our formulators design your L-theanine supplement around its intended use case — daytime focus, bedtime wind-down, or caffeine pairing. We recommend clinical dose ranges (100 mg for focus, 200 mg for sleep stacks), pair L-theanine with evidence-based co-ingredients, and model cost per dose across format options before production.
Source Selection: Suntheanine vs Generic
Choose Suntheanine for premium, clean-label positioning with published human clinical data, or high-purity non-branded L-theanine for volume-priced SKUs. We source both with full COAs, heavy-metal screens, and enantiomeric purity testing — the decision is brand positioning, not efficacy parity.
Production & Quality Control
Manufacturing in our FDA-registered, cGMP-certified facility with real-time quality monitoring. Every batch undergoes identity testing on the L-theanine active, potency verification, heavy-metal screening, microbiological analysis, and stability validation for your chosen format.
Packaging & Launch
We package in bottles, sachets, pouches, stick packs, or custom formats with complete label compliance review. Our regulatory team reviews every structure-function claim around calm, focus, and sleep positioning so your launch stays on the right side of FDA and FTC standards.
Key Benefits for Your Brand
Every aspect of our L-theanine supplements manufacturing is designed to accelerate your time-to-market while maintaining uncompromising quality standards.
Suntheanine & Generic Options
Suntheanine is the trademarked, fermentation-derived L-theanine used in the strongest human clinical trials. We manufacture with Suntheanine for brands that want science-backed, clean-label positioning — and with high-purity generic L-theanine for volume SKUs. Same efficacy, different cost structure.
Calm Focus Without Sedation
L-theanine produces a distinct "alert calm" state by promoting alpha-wave brain activity — reducing perceived stress without the sedation of traditional calming compounds. This makes it uniquely useful across daytime focus products, bedtime wind-down stacks, and caffeine pairings.
Caffeine Stack Synergy
The 2:1 L-theanine-to-caffeine ratio (200 mg L-theanine + 100 mg caffeine) is the signature nootropic coffee and energy-drink formulation. We produce this exact stack — and your custom variations — in capsule, stick pack, and ready-to-mix powder formats for the fast-growing functional coffee and focus-drink segments.
Multiple Delivery Formats
Capsules for clinical-dose positioning, low-sugar gummies for mainstream bedtime shoppers, single-serve powder sachets for mix-in calm beverages, stick packs for functional coffee pairings, and fast-melt sublinguals for acute stress use cases. Launch a full calm-focus line from a single manufacturing partner.
Regulatory Compliance Support
Calm and focus claims face heightened FTC scrutiny. Our regulatory team reviews all label copy and marketing claims to ensure compliance with FDA structure-function requirements and honest positioning around L-theanine mechanism claims — protecting your brand from enforcement actions.
Frequently Asked Questions
Common questions about our L-theanine supplements private label manufacturing services.
Explore More Manufacturing Services
GABA Supplements
PharmaGABA & fermented GABA in capsules, gummies & sachets — calm, sleep, and nootropic stacks.
Learn moreSleep Supplements
Melatonin, magnesium, L-theanine & apigenin sleep stacks. The $1B+ sleep market leader.
Learn moreMagnesium Gummies
Private label magnesium glycinate gummies — the fastest-growing supplement format of 2026.
Learn moreApigenin Supplements
Chamomile-derived 50 mg apigenin — the Huberman-protocol sleep flavonoid. Capsules, gummies, stack SKUs.
Learn moreLow MOQ Manufacturing (500 Units)
The industry's lowest MOQ — start with 500 units, same FDA-registered quality at any size.
Learn moreReady to scale your product line?
Speak with an account executive today to discuss your next run of L-theanine supplements.