Pure L-Tryptophan Amino Acid Capsules • 870mg • UK
870mg across three capsules. L-Tryptophan first.
Crown Supplements Pure L-Tryptophan Capsules give British shoppers 290mg of Pure L-Tryptophan in each capsule and 870mg across three capsules. Pure Psyllium Husk Extract accompanies the amino acid as the stated uptake ingredient, with the focused formula enclosed inside HPMC hypromellose capsule shells.
Pure amino acid formula
Inside each capsule
Across three capsules
Three capsules each time
Formula snapshot
Pure L-Tryptophan
Amino acid
Powder enclosed inside capsules
290mg
870mg across three capsules
Three capsules twice per day
Pure Psyllium Husk Extract
HPMC hypromellose
What exactly is L-Tryptophan?
One precisely identified amino acid—not a vague capsule blend.
L-Tryptophan is the exact amino acid ingredient enclosed inside these capsules. The “L” forms part of the ingredient identity, while tryptophan is the shorter wording customers often use when searching for the same amino acid.
Customers may search for L-Tryptophan capsules, tryptophan capsules, Pure L-Tryptophan or an L-Tryptophan supplement in the UK. Crown Supplements keeps the recognised ingredient name at the centre of the product instead of hiding it inside an overloaded proprietary mixture.
The L-Tryptophan is supplied as powder enclosed inside HPMC hypromellose capsule shells. Each capsule contains 290mg, while Pure Psyllium Husk Extract accompanies the amino acid as the stated uptake ingredient.
The complete ingredient name
L-Tryptophan is the precise amino acid identity used for the ingredient inside the Crown Supplements formula.
Every capsule provides a stated 290mg amount.
The familiar shortened wording
Tryptophan is commonly used as shorter wording when customers search for L-Tryptophan amino acid capsules.
The product itself identifies the complete Pure L-Tryptophan ingredient directly.
Measured before use
Loose L-Tryptophan powder requires the customer to measure the amount before taking it.
290mg already measured
Each HPMC hypromellose capsule contains a measured 290mg of Pure L-Tryptophan.
Understanding the product numbers
290mg per capsule. 870mg across three.
The two headline quantities describe the same Pure L-Tryptophan formula at different capsule counts. Each capsule contains 290mg, while three capsules provide the complete stated serving amount of 870mg.
Inside each capsule
Every HPMC capsule contains 290mg of Pure L-Tryptophan.
The exact per-capsule amount makes the formula straightforward to inspect before selecting a pouch.
Across three capsules
Three capsules provide the complete stated 870mg L-Tryptophan serving.
The recommended directions use three capsules at each serving time.
Amino acid ingredient
Per capsule
Across three capsules
Across six capsules
Why choose these Pure L-Tryptophan capsules?
The L-Tryptophan should lead the formula.
British customers choosing L-Tryptophan capsules are paying for the amino acid. Crown Supplements keeps the formula centred on the exact ingredient identity, the measured 870mg serving and the stated Psyllium Husk Extract uptake ingredient instead of burying the product under machinery-focused clutter.
Pure L-Tryptophan
The named amino acid remains at the centre of the capsule formula.
Exact ingredient identity
L-Tryptophan is identified directly rather than hidden inside a vague amino acid mixture.
290mg per capsule
The physical L-Tryptophan amount inside each capsule is stated precisely.
870mg serving
Three capsules provide the complete stated L-Tryptophan serving amount.
Defined uptake ingredient
Pure Psyllium Husk Extract is identified directly within the formula.
No production clutter
No fillers, binders or machine flow agents are added by Crown Supplements.
The Crown Supplements formula standard
Built around L-Tryptophan—not machinery convenience.
When an amino acid capsule includes filler padding, binders, bulking materials, lubricants, anti-caking agents or machine flow agents, part of the formula is being designed around production instead of the L-Tryptophan customers came to buy.
They may help the machine. They are not the reason the customer buys the capsule.
Capsule quantities and pack duration
Four quantities. Six capsules per day.
Customers across Great Britain can choose 90, 180, 270 or 360 capsules. The recommended use is three capsules twice per day, providing two complete 870mg servings and 1,740mg of L-Tryptophan across the day.
30 three-capsule servings
Approximately 15 days
60 three-capsule servings
Approximately 30 days
90 three-capsule servings
Approximately 45 days
120 three-capsule servings
Approximately 60 days
Complete product specification
Everything needed to understand the formula.
These Pure L-Tryptophan Capsules give UK customers 290mg inside each HPMC capsule, 870mg across three capsules and Pure Psyllium Husk Extract as the stated uptake ingredient.
Crown Supplements Pure L-Tryptophan Capsules
L-Tryptophan amino acid capsules
Pure L-Tryptophan
Amino acid
L-Tryptophan powder enclosed inside capsules
290mg
870mg across three capsules
Three capsules taken twice per day
Six capsules
1,740mg
Pure Psyllium Husk Extract
HPMC capsules made from hypromellose
90, 180, 270 and 360 capsules
Tryptophan capsules, L-Tryptophan amino acid capsules, Pure Tryptophan capsules and L-Tryptophan supplement UK
No fillers, binders or machine flow agents added by Crown Supplements
Crown Supplements
Directions and storage
Three capsules. Twice per day.
Take three capsules twice per day, following the current product label.
Store in a cool, dry place away from direct sunlight. Keep the pouch securely closed and press out excess air before closing.
Follow the current Crown Supplements product label and do not exceed the recommended amount of six capsules per day.
L-Tryptophan capsule questions
Frequently asked questions.
Pure L-Tryptophan Amino Acid Capsules • 870mg Across Three Capsules
Choose the capsule built around the L-Tryptophan.
Crown Supplements gives customers across the United Kingdom 290mg of Pure L-Tryptophan inside each HPMC hypromellose capsule and 870mg across three capsules.
Pure L-Tryptophan. Precisely measured amino acid. No filler clutter. No binder clutter. No machine-flow-agent clutter.
Select your preferred capsule quantity in the purchase panel above.

Excellent company to deal with. Quality products & quick delivery. Would buy from again & will! Thank you.
Best supplements in the UK
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good product and fast delivery
Good service, only just started with supplements so fingers crossed after a few weeks start to feel benefits of them, will reorder as i know they take a while to work 😀