JST Jodie Semtex

Updated May 8, 2019.
Published Jul 26, 2014.

Jst Jodie Semtex is a fat burner that is designed to give you an edge in your training and workouts. According to Jodie Marsh, her product range has something for everyone whether you are looking to lose weight get fit or tone muscle. However, Jst Jodie Semtex may be more suitable for the serious gym enthusiast rather than the casual dieter.


  • Clear ingredients profile complete with quantities
  • Seems safer than many other bodybuilding styled products on the market


  • Not much independent feedback available
  • No money-back guarantee
JST Jodie Semtex
JST Jodie Semtex is a fat burning diet pill that promises explosive energy! This thermogenic supplement is made in collaboration between sports Nutrition Company JST and glamour model celeb turned bodybuilder Jodie Marsh.

JST Jodie Semtex is popular with bodybuilders and gym nuts, but is it a step too far for people just looking to lose some weight? We find out.

JST Jodie Semtex Overview

What you need to know about JST Jodie Semtex

JST Jodie Semtex is a fat burner that supports your exercise and workout routines. If used as part of a balanced diet this perfectly balanced formula will deliver unrivalled results. According to Jodie Marsh, her product range has something for everyone whether you are looking to lose weight get fit or tone muscle.

What are the side effects of JST Jodie Semtex?

Potential side effects may include, jitteriness, anxiety, sweating, light headedness, headaches, insomnia, nausea, rapid heart beat, heart palpitations, increased blood pressure and heart rate, dehydration, facial flushing, and itchy skin.

How much does JST Jodie Semtex cost?

You can buy Jst Jodie Semtex direct from the Jst Jodie website. One container of 60 capsules (1-2 months supply) costs £19.99.

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JST Jodie Semtex Key Features

Jodie Marsh is a familiar name to many UK based readers. This glamour model turned reality star turned body builder has never been shy of making the headlines and still kicks up plenty of controversy.

She has been a Sun page three girl as well as a topless model in lads’ mags. She has featured in TV reality shows and tabloid headlines, which have further added to her party girl sexy image.

JST Jodie Semtex Key Points

  • Part of a product range devised by Jodie Marsh and JST Nutrition
  • Available in 6-capsule and 60-capsule packs

However, these old days seemed to have mostly disappeared because for the last five years she has focused her attention on bodybuilding.

Today Jodie Marsh is a lean, ripped iron-pumping competitor in international bodybuilding competitions. She is practically unrecognisable as the former glamour model and these days claims she lives by a gruelling regime of training, diet – she is a committed vegetarian, and clean living.

Jodie Marsh has won countless medals including gold at the Women’s Fit Body category at the finals run by the International Natural Bodybuilding Federation (INBF) in Washington D.C.

She is a member of the UKDFBA (United Kingdom Drug Free Bodybuilding Association.

The female body builder look is not to everyone’s taste, but there is no denying that Jodie Marsh has created an extremely toned and muscle bound body.

How to Take JST Jodie Semtex

To take Jst Jodie Semtex Take 2 capsules daily 4- 6 hours on NON TRAINING DAYS.

For TRAINING DAYS Take 2 capsules 30/45 minutes prior to exercise.

You are advised to take a break (Cycle off) for a 1-2 week period after using for 8-12 weeks.

In July 2012, Jodie Marsh launched her own personal range of bodybuilding protein shakes and fat burning supplements called JST Jodie. This was in collaboration with JST Nutrition an established UK nutrition company.

The JST Jodie website features plenty of pictures of Jodie in the gym. The products come in some cool purple and black packaging – the colour theme of the website and you can buy a complete range of bodybuilding products.

These include protein powders, meal replacements, and supplements for weight loss, pre work out, recovery, and more. Her products cover all aspects of the gym including clothes.

Jst Jodie Semtex is designed to support work out routines and exercise. It contains stimulants including caffeine, Guarana and Brazilian cocoa extract as well as some amino acids, green tea, and vitamins. It is billed as a pre work out supplement as well as offering general support to training performance.

Semtex is described as a thermogenic – i.e. it increases the speed of the metabolism and helps you burn fat by this process. In addition, it will suppress the appetite by making you feel too wired to eat.

JST Jodie Semtex Concerns:

  • This supplement could encourage you to exercise beyond safe limits
  • Once your body becomes accustomed to increased caffeine, any fat burning will probably decrease
  • Taking stimulants long term is not good for health.

For a stimulant based fat burner it looks reasonably safe although the caffeine will not agree with everyone. However the caffeine content has since been reduced since our original review. We like the fact that it does not contain synephrine or yohimbine, which are common ingredients in this type of performance booting pill.

We also like the fact that it contains full ingredients information including contents amounts.

If you want to join in with Jodie Marsh and are interested in fitness and training you can follow her on Twitter and share experiences with her and fellow JST Jodie product users. Usual hashtags are #SEMTEXARMY #EatCleanTrainDirty #Strongisthenewskinny.

Unsurprisingly there are a lot of positive comments about Semtex via Twitter. She has many fans and people seem to like this supplement.

What does JST Jodie Semtex claim to do?

According to the product information:

SEMTEX is a fat burner that supports your exercise and workout routines.

You are advised to eat healthily:

If used as part of a balanced diet this perfectly balanced formula will deliver unrivalled results giving you that desired edge.


JST Jodie SEMTEX will support your efforts to achieve your ultimate sporting and workout goals giving you that desired edge.

Does JST Jodie Semtex work?

Yes, we think it probably does work. That is if you want a stimulant and can ensure you get plenty of exercise and deal with the side effects.

There has been clinical testing that shows that caffeine can help promote weight loss but you may find that the effects wear off once your body gets used to it.

Some people have found it has caused inconvenient side effects and to be honest it does not seem a very healthy way to go.

However if you were looking for a stimulant buzz to rev up your training and did not have any problems with caffeine it might be worth a try. You need to bear in mind that to get the real gym toned looks of a body builder, like Jodie Marsh you need to put in a lot of hours and make drastic changes to your lifestyle and diet. You do not get these types of results out of a bottle.

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JST Jodie Semtex Ingredients

Jst Jodie Semtex is a powerful looking supplement, which contains high quantities of stimulants. Serving size is two capsules.

  • Caffeine from Anhydrous Cocoa and Guarana (200mg): Anhydrous simply means dehydrated and caffeine is caffeine no matter where it is extracted. Guarana is a native Brazilian berry, which is well known for its high caffeine content, and cocoa contains caffeine.
    Caffeine is known to increase the metabolism and is effective for fat burning for this reason. It stimulated the body’s nervous system and gives you an energy boost. There is evidence that when combined with green tea the combined fat burning effects are enhanced. The problem is that the body can quickly become accustomed to caffeine and these effects can wear off.
    The average cup of instant coffee contains around 100mg of caffeine.
  • Brazilian Cocoa Extract (240mg): Bitter chocolate tasting extract that is comprised of xanthine molecules theobromine and caffeine. Theobromine is found in chocolate but is also used medically as a muscle stimulant – it widens the blood vessels. It may also improve alertness and exercise performance.
  • Capsicum (Cayenne) Extract (190mg): When taken in sufficient quantities, some research has indicated that high levels of capsaicoinds increases the metabolism and promote fat burning. It may help raise serotonin levels in the brain so may help reduce depression.
  • Green Tea Extract (40mg): Green tea contains antioxidants and research has suggested that it may play a role in helping to promote fat oxidation or fat burning.
    When combined with added caffeine and resistance training, research has indicated that fat burning effects are enhanced.
  • Niacin (Vitamin B3) (35mg): This vitamin is found in fish, meat, eggs, and dairy products and important for maintaining healthy cells and the proper function of fats and sugars in the body. The RDA is 35mg a day and an excess of Niacin can sometimes lead to side effects including facial redness flushing and itchiness.
  • Guarana Extract (24mg): Provides some added caffeine to the formula.
  • Acetyl-L-Carnitine (20mg): This amino acid is used for treating mental disorders including age related memory loss and is important for brain and heart function as well as muscle movement. It is naturally made in the body and helps in the production of energy.
    Source: WebMD Resource
  • Bioperine (9mg): Black pepper extract that is believed to promote the bioavailability of other compounds.

Jst Jodie Semtex contains many stimulants – mainly provided by caffeine but also in the Brazilian Cocoa extract. This will be the main effect because although the supplement also contains other ingredients their effects are likely to be lost in all that caffeine.

Will this help you lose weight? It will certainly enhance your energy and if you train at the gym, it may help boost your performance. In addition, Theobromine is popular as a muscle stimulant and there is some evidence that capsicum has metabolism boosting effects too.

The problem for us lies in understanding why you should want this stimulant effect. It does not sound healthy and for many people will simply be too strong and unpleasant.

JST Jodie Semtex Side Effects

It will undoubtedly have side effects for some people. It depends on how you are with caffeine and of course, not everyone will have a problem.

Many customers who are otherwise positive about the supplement and have written on the product website, complaining of insomnia;

Only downside is not being able to sleep. Advise not to take any after 4pm

Some customers have felt nauseous and sick. An Amazon customer wrote;

I’m sure it works as the caffeine makes you bounce off the walls for hours and hours. Made me feel sick practically all day… I’m extremely disappointed as I feel I won’t survive if I take them.

Another customer mentioned sweating and light headiness;

This helps as you sweat like a mad beatch when working out and I find it suppresses my appetite. I find 1 is enough for me rather than 2! And if you feel lightheaded then you’ve not drunk enough water

One customer reported;

taken my first lot today and having being sensitive to caffeine my hearts racing a lot – hopefully something to get used to as I’d really like to get the results

This customer should have read the ingredients list first. This supplement is not suitable for anyone sensitive to caffeine.

Potential side effects may include:

  • Jitteriness
  • Anxiety
  • Sweating
  • Light headedness
  • Headaches
  • Insomnia
  • Nausea
  • Rapid heart beat
  • Heart palpitations
  • Increased blood pressure and heart rate
  • Dehydration
  • Facial flushing and itchy skin

The product information comes with some clear warnings and advice. It states, always consult your GP before taking Nutritional Supplements, especially if you are taking medication, have an existing medical condition or are due to undergo surgery. You should not take food supplements as a substitute for a varied balanced diet or a healthy lifestyle. Contains High Amounts of Caffeine. Not suitable for children, pregnant or lactating women or people sensitive to caffeine. Side-effects from this supplement are rare but please discontinue use and contact your GP immediately in the event of an adverse reaction. Do not exceed recommended dose. Do not use in conjunction with alcohol.

JST Jodie Semtex Customer Feedback

There are reviews posted on the product website and although we cannot count these as impartial, we like the fact that some negative comments around side effects have been included, such as;

The only bad thing is I literally couldn’t sleep at night after taking these! I would recommend taking them early in the day if possible.

Positive comments are mostly along the lines of;

Amazing product, have been on them since the start of January and lost over 2st with a healthy diet and exercising 4/5 days a week. For me, I only take one caps everyday and I can really see a difference in my performance! Definitely recommend!! Thank you x

Many customers have mentioned taking only one capsule as the daily dose.

There is not a lot of feedback elsewhere. There are some genuine looking reviews on Amazon (although only a couple in total) and people seem pleased.

One reviewer wrote;

Can’t recommend this product enough! Will definitely be ordering another one soon as this really helped me lose weight quickly

Another was similarly impressed, writing;

I have recommended this to so many people now that I should be a Jodie Marsh sales rep. My close friend has already lost 2 stone in 7 weeks of using this product. Amazing results

The only negative review was left by a man who was disappointed by the nauseous side effects and unable to take it.

JST Jodie Semtex Money-Back Guarantee

There is no money-back guarantee on offer.

Where To Buy JST Jodie Semtex

You can buy Jst Jodie Semtex direct from the Jst Jodie website. One container of 60 capsules (1-2 month supply) costs £19.99.

Shipping is free to UK addresses. Jst Jodie ship all over the world but do not provide international shipping information and in order to buy you have to first sign up and create an account.

Jst Jodie Semtex is also available via 60 capsules costs £27.45 and includes free delivery to UK addresses.

Watchdog Verdict

Jst Jodie Semtex looks to be one of the better supplements for the body builder market. It does not contain any suspicious looking ingredients and although caffeine will not suit everyone, at least the effects are well known.

Whether it will help you lose weight all depends on your own fitness, diet, and work out regime. If you put in the effort, you will lose weight but you could do that yourself without the aid of a stimulant.

We are not in favour of stimulant weight loss. It does not seem a healthy, or a sustainable way to change your life and establish new healthy habits you can live with.

If you are just starting out in the gym you should try out your exercise regime without stimulants. Otherwise you could be tempted to over do it, which is potentially dangerous. In addition, the fat burning effects of caffeine soon wear off after the body becomes accustomed to the effects.

However, people will always look to stimulants to use in the gym so if you are set upon this course of action, this supplement looks better than most.

We wish Jodie Marsh all the best in her bodybuilding career but feel that this supplement is just not safe and effective enough to add to our approved list.

How does JST Jodie Semtex compare to Phentaslim?

CriteriaJST Jodie Semtex ComparisonPhentaslim comparison
Clinically Proven Ingredients
Side Effect Free
Positive Customer Reviews
24/7 Support
Money-back Guarantee

Disclaimer: Our reviews and investigations are based on extensive research from the information publicly available to us and consumers at the time of first publishing the post. Information is based on our personal opinion and whilst we endeavour to ensure information is up-to-date, manufacturers do from time to time change their products and future research may disagree with our findings. If you feel any of the information is inaccurate, please contact us and we will review the information provided.

Have Your Say

3 comments on 'JST Jodie Semtex'

  1. Currently reading side effects as I feel sooooo sick and have a huge headache after taking it a 9am this morning however prior to these side effect I did have a huge amount of energy that I never woke up with. Is this sickness and headworth worth it though :/

  2. I took this product and it made me workout an extra 40-60 mins at the gym to my normal hour and I felt great, made me work hard and I didn’t feel like I wanted to go home after 40 mins. I love this product and I also find it suppresses my appetite which is great because all I want to do on my days of is snack snack snack.

  3. I found this article quite strange. I thought it may be a bit of research into Jst Jodie’s Semtex product, however it seems to be more of a Jodie bashing for the choices she’s made. I’m not a Jodie fan by any account, (I didn’t know who she was until recently) it’s just that articles like these, which don’t stay on topic, in this case ‘Semtex’ pros and cons, undermine theories of being a ‘watchdog” for consumers like myself. Come on now..must us women continue undermining each other?!

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