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SLOW RELEASE CAFFEINE (400mg CaffXtend®) POWDER
Slow-release granular caffeine of 400mg CaffXtend® (50% pure caffeine). Pure caffeine content of 200mg per dose. Better release profile, less jitters, more sustained improvements. Convenient powder format. Suitable for vegans.




- Slow-release caffeine powder.
- 400mg of CaffXtend® per dose.
- No caffeine crash.
- More sustained effects, without spikes and dips.
- Better tolerance.
- 200mg of pure caffeine.
- Suitable for vegan diets.
Table of contents
HSN RAW: 100% pure, authentic, granulated-release caffeine powder
Slow-release caffeine powder by RawSeries is a food supplement based on CaffXtend® (slow-release natural granulated caffeine).
CaffXtend® is a prestigious trademark of the company Inventia Healthcare, well known for its granulation system that provides a sustained release of caffeine.
This is a 100% vegan-friendly product.
What is Slow-Release Caffeine Powder for?
CaffXtend® contains 50% pure caffeine.
Each dose of this dietary supplement contains 400mg of CaffXtend®, meaning it provides 200mg of pure caffeine.
Caffeine
- Caffeine helps increase alertness.1
- Caffeine helps improve concentration.1
- Caffeine contributes to an increase in endurance performance.2
- Caffeine contributes to the reduction of perceived exertion during exercise.3
CaffXtend® is unique: Discover the best slow-release caffeine in HSN's product.
CaffXtend® raw material
CaffXtend® is unique. It has been developed and manufactured by Inventia Healthcare, a company recognised the world over for its innovative development of this kind of ingredient.
CaffXtend® uses patented technology that allows the caffeine dose to be released over a 12-hour period (according to the company that owns the trademark: Inventia Healthcare Ltd).
Release pattern
CaffXtend® passes through our body in a different manner to immediate-release caffeine.
Thanks to its granulation technology, the caffeine is released over a long period of time.

While typical caffeine supplements release more than 95% of their content in the first few minutes, this one does so over 12 hours.
Slow-release Benefits
One of the main problems with caffeine is that the effects of the compound, when released immediately, peak quickly and then wear off, creating a subjective feeling of fatigue known as 'caffeine crash'.
CaffXtend®, thanks to its unique absorption pattern is more favourable by achieving:
- Up to 36% greater improvements in alertness than immediate-release caffeine after 3, 6, and 8 hours.
- Fewer adverse effects than with the consumption of high doses of immediate-release caffeine, as the peak reached is lower because it is released in a sustained manner, the jitters that caffeine can generate in consumers are reduced.
All this makes CaffXtend® undoubtedly the best choice for students and workers who work long, mentally demanding days.
Powder format
The format in which this supplement is presented is very convenient, as you only need to mix the powder with water, juice or any drink of your choice to take it.
Vegan-friendly
This supplement is suitable for vegetarian and vegan diets.
Have you tried granulated caffeine before? You should bear in mind that:
It should be noted that because CaffXtend® uses a unique granulation technology, this supplement doesn't dissolve in the same way as other supplements. It is therefore normal to notice small 'grains' while drinking the preparation.
Can I combine this product with others? HSN recommends you with:
What does CaffXtend® Caffeine powder taste like?
Slow-Release Caffeine Powder has a neutral taste, but if the granules are chewed, an intense bitter taste is perceived.
Bibliography on caffeine
- Sager, M., Schick, P., Mischek, M., Schulze, C., Hasan, M., Kromrey, M. L., … Koziolek, M. (2019). Comparison of in vitro and in vivo results using the gastroduo and the salivary tracer technique: Immediate release dosage forms under fasting conditions. Pharmaceutics, 11(12).
- Grgic, J., Grgic, I., Pickering, C., Schoenfeld, B. J., Bishop, D. J., & Pedisic, Z. (2019). Wake up and smell the coffee: Caffeine supplementation and exercise performance - An umbrella review of 21 published meta-analyses. British Journal of Sports Medicine, 54(11), 681–688.
- Goldstein, E. R., Ziegenfuss, T., Kalman, D., Kreider, R., Campbell, B., Wilborn, C., … Antonio, J. (2010). International society of sports nutrition position stand: Caffeine and performance. Journal of the International Society of Sports Nutrition, 7(1), 5.
- Cappelletti, S., Daria, P., Sani, G., & Aromatario, M. (2014). Caffeine: Cognitive and Physical Performance Enhancer or Psychoactive Drug? Current Neuropharmacology, 13(1), 71–88.
1 The effect is obtained with an intake of at least 75mg of caffeine.
2 The effect is obtained with an intake of 3mg of caffeine/kg body weight, one hour before exercise. This guidance is aimed at adults carrying out endurance exercise.
3 The effect is obtained with an intake of 4mg of caffeine/kg body weight, one hour before exercise. This guidance is aimed at adults carrying out endurance exercise.
Nutritional FactsSLOW RELEASE CAFFEINE (400mg CaffXtend®) POWDER 150g |
daily doseper serving |
Serving size: 1 scoop of 0.5ml (400mg) | ||
daily dose: 1 scoop of 0.5ml (400mg) | ||
Servings per container: 375 | ||
Daily amount | ||
---|---|---|
Long-acting natural granulated caffeine (CaffXtend®) | 400mg | |
Caffeine | 200mg |
Ingredients
Slow release natural granulated caffeine [caffeine anhydrous (plant extract from Coffea robusta beans)].
Warnings
Store in a cool (below 25°C), dry and dark place. Do not exceed the stated recommended daily dose. Keep out of reach of the smallest children. Nutritional supplements should not be used to replace a balanced diet. Not advised for children nor pregnant women. Contains caffeine (200mg/daily dose). Caffxtend® is a registered trademark of Inventia Healthcare Ltd.. The scoop/product quantity equivalences (grams or milligrams) are indicative, as the density of powdered products may vary between flavours and batches. We recommend the use of a kitchen scale in cases where precise dosing is required. It is necessary to maintain a varied and balanced diet and a healthy lifestyle. Health claim awaiting European authorization.

How to take SLOW RELEASE CAFFEINE (400mg CaffXtend®) POWDER 150g
Mix 1 scoop of 0.5ml (approx. 400mg) with 100-200ml of water, juice or the drink of your choice, take 1 time a day, preferably in the morning.

A satisfied customer says:
Powerful.
Cris 04/01/2024
I can tell it's a good product and the caffeine effect is powerful. When I run out I will order it again, as I eat pre-workout, even at breakfast and avoid coffee.
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A critical customer says:
Well
Mdeburgos82 25/01/2024
I take the recommended dose daily and I can't say if I notice the effects, although I also have a high tolerance to caffeine.
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Fantastic
fernando 22/05/2025
I take very little, not even half of what is recommended, and it helps me to last all morning without falling asleep, since I train very early and wake up early for the first breakfast, and the truth is that it works very well until noon.
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Sustained energy without peaks and troughs
Daniel 16/05/2025
It releases gradually to maintain stable energy for hours. Ideal for long workouts or intense days, without nervousness or sudden energy drops. It dissolves well and has no taste, making it easy to consume.
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Perfect
Cafeina liberación prolongada 05/05/2025
With 1 small dose you feel the effects throughout the morning. Less nervous than with coffee and more active. It will be an indispensable in my daily life.
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Slow absorption caffeine
jose 13/04/2025
Good supplement, with good absorption and good taste. There is nothing miraculous, but everything adds up with a good costance in training.
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Indispensable at breakfast
Mikel 11/08/2024
Caffeine extended release is a supplement for those seeking sustained energy without the peaks and troughs associated with traditional forms of caffeine. By releasing caffeine gradually into the body, this supplement ensures a steady source of energy for several hours.
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