Amino Acids and BCAAs

L-Citrulline, Pure Powder - 113g

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L-Citrulline, Pure Powder - 113g

L-Citrulline, Pure Powder - 113g

£16.81
L-Citrulline, 750mg - 90 vcaps

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L-Citrulline, 750mg - 90 vcaps

L-Citrulline, 750mg - 90 vcaps

£14.51
L-Citrulline, 1200mg Extra Strength - 120 tabs

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L-Citrulline, 1200mg Extra Strength - 120 tabs

L-Citrulline, 1200mg Extra Strength - 120 tabs

£23.81
L-Carnitine, 500mg - 60 vcaps

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L-Carnitine, 500mg - 60 vcaps

L-Carnitine, 500mg - 60 vcaps

£15.40
L-Carnitine, 1000mg - 50 tabs

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L-Carnitine, 1000mg - 50 tabs

L-Carnitine, 1000mg - 50 tabs

£19.62
L-Arginine, Powder - 454g

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L-Arginine, Powder - 454g

L-Arginine, Powder - 454g

£30.24
L-Arginine, 700mg - 180 vcaps

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L-Arginine, 700mg - 180 vcaps

L-Arginine, 700mg - 180 vcaps

£19.20
L-Arginine, 500mg - 250 caps

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L-Arginine, 500mg - 250 caps

L-Arginine, 500mg - 250 caps

£18.45
L-Arginine, 1000mg - 60 tablets

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L-Arginine, 1000mg - 60 tablets

L-Arginine, 1000mg - 60 tablets

£11.20
L-Carnitine, 250mg - 60 vcaps

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L-Carnitine, 250mg - 60 vcaps

L-Carnitine, 250mg - 60 vcaps

£8.66
L-Carnitine, 500mg - 180 vcaps

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L-Carnitine, 500mg - 180 vcaps

L-Carnitine, 500mg - 180 vcaps

£32.63
L-Arginine, 500mg - 100 caps

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L-Arginine, 500mg - 100 caps

L-Arginine, 500mg - 100 caps

£7.60
L-Arginine, 1000mg - 120 tablets

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L-Arginine, 1000mg - 120 tablets

L-Arginine, 1000mg - 120 tablets

£19.68
L-Arginine, 1000mg - 180 tablets

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L-Arginine, 1000mg - 180 tablets

L-Arginine, 1000mg - 180 tablets

£29.56
HMB, 500mg - 120 vcaps

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HMB, 500mg - 120 vcaps

HMB, 500mg - 120 vcaps

£27.96
HMB, Powder - 90g

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HMB, Powder - 90g

HMB, Powder - 90g

£31.40
HMB, 1000mg - 90 tabs

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HMB, 1000mg - 90 tabs

HMB, 1000mg - 90 tabs

£34.61
Glycine, Pure Powder - 454g

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Glycine, Pure Powder - 454g

Glycine, Pure Powder - 454g

£21.44
Glutathione, 250mg - 60 vcaps

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Glutathione, 250mg - 60 vcaps

Glutathione, 250mg - 60 vcaps

£14.21
Glutathione, 500mg - 120 vcaps

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Glutathione, 500mg - 120 vcaps

Glutathione, 500mg - 120 vcaps

£44.32
Glutathione with Milk Thistle Extract & Alpha Lipoic Acid, 500mg - 60 vcaps

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Glutathione with Milk Thistle Extract & Alpha Lipoic Acid, 500mg - 60 vcaps

Glutathione with Milk Thistle Extract & Alpha Lipoic Acid, 500mg - 60 vcaps

£23.23
Glutathione with Milk Thistle Extract & Alpha Lipoic Acid, 500mg - 30 vcaps

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Glutathione with Milk Thistle Extract & Alpha Lipoic Acid, 500mg - 30 vcaps

Glutathione with Milk Thistle Extract & Alpha Lipoic Acid, 500mg - 30 vcaps

£14.55
DMAE (Dimethylaminoethanol), 250mg - 100 vcaps

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DMAE (Dimethylaminoethanol), 250mg - 100 vcaps

DMAE (Dimethylaminoethanol), 250mg - 100 vcaps

£10.16
Branched-Chain Amino Acids - 240 vcaps

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Branched-Chain Amino Acids - 240 vcaps

Branched-Chain Amino Acids - 240 vcaps

£31.64
Branched-Chain Amino Acids - 120 vcaps

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Branched-Chain Amino Acids - 120 vcaps

Branched-Chain Amino Acids - 120 vcaps

£14.88
Betaine Powder - 170g

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Betaine Powder - 170g

Betaine Powder - 170g

£14.02
Arginine & Citrulline, Powder - 340g

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Arginine & Citrulline, Powder - 340g

Arginine & Citrulline, Powder - 340g

£28.03
Arginine & Ornithine - 250 vcaps

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Arginine & Ornithine - 250 vcaps

Arginine & Ornithine - 250 vcaps

£26.27
Arginine & Ornithine - 100 vcaps

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Arginine & Ornithine - 100 vcaps

Arginine & Ornithine - 100 vcaps

£13.93
Arginine & Citrulline - 120 vcaps

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Arginine & Citrulline - 120 vcaps

Arginine & Citrulline - 120 vcaps

£13.97
Arginine & Citrulline - 240 vcaps

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Arginine & Citrulline - 240 vcaps

Arginine & Citrulline - 240 vcaps

£25.56
Amino Complete - 120 vcaps

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Amino Complete - 120 vcaps

Amino Complete - 120 vcaps

£12.36
Amino Complete - 360 vcaps

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Amino Complete - 360 vcaps

Amino Complete - 360 vcaps

£32.98
Amino-9 Essentials, Powder - 330g

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Amino-9 Essentials, Powder - 330g

Amino-9 Essentials, Powder - 330g

£31.89
Acetyl-L-Carnitine, Pure Powder - 85g

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Acetyl-L-Carnitine, Pure Powder - 85g

Acetyl-L-Carnitine, Pure Powder - 85g

£18.97
Acetyl-L-Carnitine, 500mg - 50 vcaps

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Acetyl-L-Carnitine, 500mg - 50 vcaps

Acetyl-L-Carnitine, 500mg - 50 vcaps

£8.79

SERVICE REVIEWS

Read what our customers say about us...

★★★★★

Excellent

Great supplement selection

Ordered protein powder, vitamins and gummies from ModFlex and everything arrived quickly. The products are high quality and delivery was fast and reliable.

James T. • 2 days ago

Excellent wellness products

Bought collagen, multivitamins and health supplements for everyday use. Everything was packaged perfectly and arrived sooner than expected.

Sarah P. • 3 days ago

Fast delivery & genuine products

Picked up creatine, protein bars and vitamins from ModFlex. Great prices, genuine brands and excellent customer service throughout.

Daniel M. • 4 days ago

Amazing protein range

The whey protein selection is brilliant and the flavours taste amazing. Delivery was next day and everything arrived safely.

Chris W. • 5 days ago

Quality vitamins & minerals

Ordered magnesium, vitamin D and omega supplements. Really impressed with the quality and value for money.

Emma L. • 6 days ago

Reliable service every time

I’ve placed multiple orders with ModFlex now and every delivery has been quick and accurate. Great experience every time.

Ryan K. • 1 week ago

Excellent gym supplements

The pre-workout and creatine products are top quality. Great energy boost and fast UK delivery.

Michael P. • 1 week ago

Brilliant customer support

Had a question about which supplements to choose and the support team were really helpful. Very professional service.

Olivia R. • 1 week ago

Great value products

Prices are competitive and the supplements feel premium quality. Definitely ordering again soon.

Nathan S. • 8 days ago

Fast and secure delivery

Everything arrived well packaged and on time. Really impressed with how smooth the ordering process was.

Lauren D. • 9 days ago

Fantastic collagen products

The collagen supplements have been amazing and easy to use daily. Great results already after a few weeks.

Sophie M. • 10 days ago

Huge variety available

Love how many different health and fitness products are available on ModFlex. Easy website to shop from too.

Adam T. • 10 days ago

Best supplements online

Tried several supplement stores before and ModFlex has been the best by far for quality and service.

Jake H. • 11 days ago

Great gummies for kids

Ordered children’s multivitamin gummies and my kids actually enjoy taking them. Really happy with the purchase.

Rebecca P. • 12 days ago

Great value

Prices are really fair compared to other stores and the quality is still excellent.

Sarah W. • 4 days ago

Excellent women’s supplements

Bought women’s health vitamins and collagen support products. Great quality and fast shipping.

Hannah J. • 12 days ago

Smooth shopping experience

Website was easy to navigate and checkout was simple. Delivery updates were very helpful too.

Ethan C. • 13 days ago

Smooth vape experience

The vape juice I ordered has great flavour and a really smooth inhale. Very impressed.

Nathan W. • 3 days ago

Impressive protein flavours

Chocolate whey protein tastes great and mixes perfectly. Definitely one of the best proteins I’ve tried.

Ben F. • 2 weeks ago

Trusted supplement store

Very trustworthy company with quick delivery and genuine supplements. Will continue ordering from ModFlex.

Lucy A. • 2 weeks ago

Excellent overall service

From ordering to delivery, everything was smooth and professional. Highly recommend ModFlex for supplements and wellness products.

Tom G. • 2 weeks ago

Huge range for different gut issues

Really impressed with the variety of gut health supplements available on ModFlex. Found exactly what I needed for digestive support and overall gut health. Excellent quality and fast delivery.

Daniel R. • 3 weeks ago

L-Citrulline, Pure Powder - 113g

L-Citrulline, 750mg - 90 vcaps

L-Citrulline, 1200mg Extra Strength - 120 tabs

L-Carnitine, 500mg - 60 vcaps

L-Carnitine, 1000mg - 50 tabs

L-Arginine, Powder - 454g

L-Arginine, 700mg - 180 vcaps

L-Arginine, 500mg - 250 caps

L-Arginine, 1000mg - 60 tablets

L-Carnitine, 250mg - 60 vcaps

L-Carnitine, 500mg - 180 vcaps

L-Arginine, 500mg - 100 caps

L-Arginine, 1000mg - 120 tablets

L-Arginine, 1000mg - 180 tablets

HMB, 500mg - 120 vcaps

HMB, Powder - 90g

HMB, 1000mg - 90 tabs

Glycine, Pure Powder - 454g

Glutathione, 250mg - 60 vcaps

Glutathione, 500mg - 120 vcaps

Glutathione with Milk Thistle Extract & Alpha Lipoic Acid, 500mg - 60 vcaps

Glutathione with Milk Thistle Extract & Alpha Lipoic Acid, 500mg - 30 vcaps

DMAE (Dimethylaminoethanol), 250mg - 100 vcaps

Branched-Chain Amino Acids - 240 vcaps

Branched-Chain Amino Acids - 120 vcaps

Betaine Powder - 170g

Arginine & Citrulline, Powder - 340g

Arginine & Ornithine - 250 vcaps

Arginine & Ornithine - 100 vcaps

Arginine & Citrulline - 120 vcaps

Arginine & Citrulline - 240 vcaps

Amino Complete - 120 vcaps

Amino Complete - 360 vcaps

Amino-9 Essentials, Powder - 330g

Acetyl-L-Carnitine, Pure Powder - 85g

Acetyl-L-Carnitine, 500mg - 50 vcaps

IMPORTANT INFORMATION