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Just Vitamins | Vitamins, Supplements & Herbal Remedies | Free UK Delivery

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Amino Acid Supplements

Amino Acids are the structural units that make up protein. Proteins are essential nutrients for the human body. They are the building blocks of the body and also serve as a fuel source. Amino acid supplements are increasing in popularity amongst athletes, bodybuilders and others on calorie-controlled diets.

All Amino Acid Supplements

Buy High Strength L-Theanine 400mg

High Strength L-Theanine 400mg VV

9.6 / 10
78 reviews

from

£9.95

Aids relaxation
May improve quality of sleep
Popular alongside 5HTP
Strongest & purest form available

Buy L-Carnitine 500mg

L-Carnitine 500mg V

9.4 / 10
13 reviews

from

£10.95

High strength tablet
Helps burn fat for energy
Popular for sports and exercise
Bioavailable N-Acetyl form

Buy 5-HTP 100mg

9.4 / 10
526 reviews

from

£12.95

UK sourced, 99% pure 5-HTP
Vegan friendly cellulose capsule
Supports sleep and mood
Good alternative to St John's Wort

Buy L-Arginine 1000mg

L-Arginine 1000mg VV

9.4 / 10
256 reviews

from

£11.45

Acts as a powerful vasodilator
This leads to an improved blood flow
Stimulates release of human growth hormone (HGH)
Very popular amongst sports people

Buy L-Theanine 200mg

L-Theanine 200mg VV

9.6 / 10
173 reviews

from

£12.95

Heavily researched amino acid
Found most commonly in tea leaves
May promote calm without drowsiness
Commonly taken alongside 5 HTP

Buy Marine Collagen 400mg

Marine Collagen 400mg P

9.6 / 10
139 reviews

from

£10.95

The finest marine-sourced collagen
Hydrolysed for easier absorption
Supports condition of hair, skin, nails and bones
Type l & 3 comprise 90% of collagen in the body

Buy L-Lysine 500mg

L-Lysine 500mg VV

9.8 / 10
55 reviews

from

£7.49

An essential amino acid
Required for protein synthesis
Cannot be made by the body
Premium, vegetarian friendly capsule