If you’re struggling to lose weight, one of the first things you need to consider is your metabolism. Your metabolism is essentially responsible for the speed in which you burn off energy and works around the clock to keep your body functioning. Therefore, if your metabolism is working slower than it should, you could see a huge difference in your ability to shed excess fat.
Which is where metabolism boosters come in.
Most fat burners on the market incorporate a metabolism-boosting aspect to help improve the rate you burn off calories – and can ensure you’re burning more fat than you normally would, even after exercise.
Check out our top metabolism booster supplements.
1
Hourglass Fit
- Engineered for women
- Thermogenic formula
- All-natural, stim-free
- Enhance mood
2
Instant Knockout Cut
- Trusted by pro athletes
- Improve exercise performance
- Powerful & metabolism-boosting
- 100% natural
4
Hunter Burn
- Premium doses
- Hunger blocking
- Potent metabolism-boosting formula
- Well-researched
5
Powher Cut
- Natural energy enhancing formula
- Regulates metabolism
- Better mood
- Backed by research
You want your metabolism booster to:
- Use proven doses of metabolism-boosting ingredients – so you can get the optimum level of fat burning possible
- Help curb hunger cravings – to help you stick to your lower calorie diet and ensuring your metabolism is burning off that stubborn stored fat
- Give you an energy boost – to maximize your workout potential and keep you operating as normal, despite being on a calorie deficit
To support your search for a metabolism booster that tick all those boxes, we’ve carefully rated and ranked the best supplements on the market.
We’ve reviewed the ingredients, potency and safety of market-leading products to bring you the very best metabolism-boosting fat burners available.
Read our complete review and find out which formula will give your weight loss plan a real boost.
Best Metabolism Boosters for Women
1. Hourglass Fit
How it works:
- High-quality metabolism-boosting formula – From thermogenic ingredients like cayenne[1] to B vitamins[2] and zinc[3], your metabolism will get a complete reboot with holistic support to keep it running at the optimum rate.
- Clean energy – Without stimulants like caffeine, Hourglass Fit gives you a clean energy boost that utilizes your body’s natural processes to release more energy.
- Premium appetite control – With the help of glucomannan and 5-HTP, you can finally put a plug in snacking and delay hunger for longer[4] [5] so you can stick to your diet easier.
- Enhanced mood – Natural components like 5-HTP[6] and B vitamins[7] help to release more ‘feel-good’ hormones like serotonin so you can enjoy a more balanced mood and revitalized motivation.
- All natural, stim-free formula – Without the interference of stimulants, this 100% natural formula will help you achieve the same goals minus nasty side effects from stims like caffeine.
Quick overview
Hourglass Fit is a female-focused weight loss support which provides women with a completely natural, stimulant-free solution to their body issues.
The meticulously constructed 2-in-1 formula has been designed to target all aspects of weight loss we women tend to struggle with, providing strong appetite control to put a lid on unnecessary snacking, natural energy to keep you active, enhanced mood for stronger motivation and better functionality of our metabolism.
Through a combination of thermogenics and components which help keep your metabolism functioning properly, Hourglass Fit could aid your body’s ability to burn more fat rather than store it.
Key Hourglass Fit Ingredients:
- Cayenne pepper – This fiery inclusion is brought in as Capsimax which ensures a highly concentrated serving. It helps heat your body through thermogenesis, which stimulates your metabolism and increases calorie burn around the clock[8].
- Glucomannan – A proven appetite controller which helps delay feelings of hunger by transforming into a soluble gel in your stomach[9] so you’ll experience less cravings and be able to stick to your diet easier.
- 5-HTP – Studies have shown 5-HTP to alleviate symptoms of depression and low mood by increasing serotonin levels[10] so you can feel happier and more balanced. This could mean you’re less likely to be tempted by ‘naughty’ snacks for a ‘pick-me-up’.
- Bioperine – This component can increase the absorption of nutrients[11] and help initiate fat regulating receptors which can not only prevent fat cells from growing[12], but can also improve thermogenesis and kickstart your metabolism[13]
- Vitamin B2 – This vitamin naturally breaks down proteins, fat and carbs which keeps your metabolism ticking over and is vital for keeping energy levels on top form[14].
What are people saying about Hourglass Fit?
Looking online, there are numerous positive reviews boasting about Hourglass Fit’s effects. From what we could find, women love the way it has helped them control those pesky hunger cravings, provide a gentle lift and re-gain their body confidence.
Here some reviews we found on the official site.
Pros:
- 100% transparent and natural formula
- Strong metabolism support
- Stimulant-free
- Targeted specifically for women
- Supports health and wellbeing
- FREE UK & US delivery
Cons:
- Only available to buy from: hourglassfit.com
- Premium price
at: HourglassFit.com
Read our complete Hourglass Fit review for more information
*Individual results may vary. Please speak with your doctor or physician before undertaking any new weight reduction, supplement, or exercise regime.
2. Instant Knockout CUT
How it works:
- Powerful metabolism-boosting ingredients – With strong thermogenics and components to support a healthy metabolic rate.
- Suppresses appetite – The formula contains clinically proven doses of appetite-suppressing ingredients which should delay your hunger and curb snacking.
- Better energy and exercise performance – Using a combination of natural stimulants and metabolism boosters your energy levels will be elevated so you can keep up excellent workouts without needing to turn to sugary snacks for a boost.
- All-natural formula – Containing a fully transparent formula using only natural products which have all been backed by scientific research as effective weight loss aids.
- Helps boost weight loss regime – Instant Knockout CUT has been designed to optimize the levels of fat burning, alongside your healthy diet and workout schedule so you can see results faster.
Quick overview
Backed by sports pros and athletes across the globe, Instant Knockout CUT has grown in popularity since it first came on the market as an effective weight loss supplement.
It contains a powerful collection of some of the most potent and premium thermogenics available, to stimulate your metabolism and start shedding that stored fat quicker. In addition, you can find clinically proven appetite suppressors and substantial energy elevators so you can take workouts to the next level.
Many women have turned to Instant Knockout CUT to help tone up their wobbly areas, recharge their metabolism and start getting a more ‘shredded’ figure they can show off.
Key Instant Knockout CUT Ingredients:
- Green tea – This herbal tea is a known thermogenic which boosts your metabolism and speeds up fat oxidation significantly[15] for increased fat reduction[16].
- Cayenne pepper – Another thermogenic, this spice helps elevate your BMR (basal metabolic rate) and increase the rate of fat breakdown into usable fuel you can burn off[17]. It’s also known to suppress your appetite too[18].
- Glucomannan – This soluble fiber provides premium support for your hunger levels, delaying your appetite for longer[19] and keeping blood sugar low to cut out cravings.
- Caffeine Anhydrous – A natural stimulant with many benefits including improved energy levels, endurance[20] and concentration[21]. It also stimulates your metabolism for increased fat burning[22].
- B vitamins – This collection of B vitamins will help improve the process of breaking down nutrients in your body, keeping your energy levels up and your metabolism on point[23].
- L-Theanine – this amino acid works alongside caffeine to enhance the stimulant’s benefits, for improved focus, drive and energy[52], whilst keeping negative side effects like jitters at bay. It’s also a proven appetite suppressant[53] and has stress-fighting abilities too[54].
Pros:
- Backed by sports pros and athletes
- Packed with metabolism boosters
- Powerful energy and focus
- All natural, scientifically-researched formula
Cons:
- Premium price point
- Can only buy from their website: instantknockout.com
Read our full Instant Knockout CUT review for more information
*Individual results may vary. Please speak with your doctor or physician before undertaking any new weight reduction, supplement, or exercise regime.
3. Leanbean
How it works:
- Strong appetite-controlling formula – Components like glucomannan[24] and chromium picolinate[25] come together to provide a powerful hunger-delaying effect to help you stick to your lower calorie diet.
- Some good metabolism-boosting ingredients – The combination of thermogenics and B vitamins will support a better metabolic rate and increase fat burning potential.
- Curbs snacking – The appetite suppressants will stop cravings for unhealthy snacks throughout the day.
- 100% natural, safe formula – All ingredients have come from nature itself and are included at safe, optimized doses to maximize effects.
- Boosts immunity – With antioxidants from vitamins and minerals which will help protect against illness and keep you feeling on top form.
Quick Overview
One of the main features of this fat burner we love is its attention to keeping your appetite in check. Sticking to your calorie-controlled diet will go much easier with this hunger-quelling formula so you can say no to temptation easier.
It’s also made up of other natural ingredients which could all contribute towards weight loss too; from B vitamins and turmeric which help keep your metabolism ticking over and fat burning elevated, to essential vitamins and minerals like zinc to ensure your body’s functioning properly.
Although the metabolism-boosting elements aren’t as potent as we’d like, Leanbean does have many other qualities which we admire and think would be conducive to weight loss for women.
Key Leanbean ingredients:
- Glucomannan – This soluble fiber is a great hunger blocker and provides full support when you’re on a calorie deficit by delaying your stomach emptying which increases satiety[26].
- Chromium Picolinate – This helps keep hunger at bay by improving your body’s response to insulin and lowering blood sugar levels[27].
- Green coffee bean – The chlorogenic acids help lower blood pressure, reduce body fat and prevent weight gain[28]. It also has a small amount of caffeine to help boost your metabolism.
- Turmeric – This golden spice promotes weight loss by reducing fat tissue growth, preventing weight gain[29] and also helps to regulate your metabolism[30] for better fat burning potential.
- Zinc – This nutrient is key to keeping your immune system and metabolism working properly[31].
Pros:
- All-natural formula with no proprietary blends
- Top appetite support for better hunger control
- Gentle metabolism boost
- Low stimulants for women who are sensitive
- Helps promote immunity
Cons:
- Formula is not as powerful as others
Read our complete Leanbean review for more information
*Individual results may vary. Please speak with your doctor or physician before undertaking any new weight reduction, supplement, or exercise regime.
4. Hunter Burn
How it works:
- Potent metabolism-boosting formula – Using a powerful selection of thermogenic ingredients will help kickstart your metabolism so you can see more fat burning.
- Premium doses and ingredients – Although this comes at a higher price than many, Hunter Burn’s formula is packed with generous doses of each top quality component to maximize results.
- Suppresses appetite – It contains one of the most effective appetite suppressing ingredients on the market – konjac root, for reduced hunger pangs.
- Blocks carbs – The inclusion of white kidney bean could be a game changer for women as it is known to block the absorption of carbs.
- Safe, well-researched formula – Backed by the latest scientific research, Hunter Burn doesn’t cut any corners with quality, doses and safety.
Quick Overview
Hunter Burn is a highly effective fat burner containing only 6 ingredients – all proven to be conducive to an easier weight loss journey.
The brand itself is proudly premium and demands the best possible quality and quantity when it comes to the formula for top results. The combination of matcha green tea and cayenne are key to keeping your metabolism at its peak through thermogenesis. It also helps reduce unnecessary calories by curbing your appetite through konjac root and blocking carb absorption with white kidney bean.
Although it’s missing caffeine, we still think the generous doses of the other ingredients will help elevate your results – and support a faster metabolism too.
Key Hunter Burn Ingredients:
- Matcha green tea – At a potent dose, this version of green tea will improve your metabolic rate tenfold, burning through stored fat by increasing fat oxidation[32]. It could also curb your appetite[33]
- Cayenne pepper – This powerful thermogenic will take your fat burning further combined with matcha and keep your metabolism ticking over 24/7 for optimized weight loss.
- Konjac root extract – An effective appetite suppressant, Hunter Burn has optimized its serving so you can experience full hunger support, making it easier to stick to a lower calorie diet.
- White kidney bean – By delaying the digestion and absorption of carbs, this could be a great appetite suppressant[34]– with studies showing significant fat reduction from smaller calorie intake[35].
Pros
- Ultra-premium doses and ingredients
- Contains potent metabolism boosters
- Scientifically backed formula
- 100% natural, transparent ingredient profile
Cons
- Premium price
- Only available at their website Hunterevolve.com
- Doesn’t contain caffeine – a strong metabolism booster
Read our complete Hunter Burn review for more information
*Individual results may vary. Please speak with your doctor or physician before undertaking any new weight reduction, supplement, or exercise regime.
5. Powher Cut
How it works:
- Strong appetite suppressor – With a combination of proven ingredients to put a stop to excessive snacking and cravings for unhealthy food.
- Supports natural fat metabolizing – The formula helps to regulate your metabolism by keeping your thyroid functioning properly and speeds up fat metabolizing through thermogenesis.
- Stops fatigue naturally – Stimulants and natural vitamins work together to alleviate tiredness and keep you energized throughout the day.
- Promotes better cognition and mood – Powher Cut brings together many elements to target your overall mood and help enhance focus, memory and attention-span.
Quick overview
Specifically designed for women, Powher Cut is an all-natural fat burner with a great presence on the market. The creators are very vocal about their rigorous research gone into developing the formula, and only use ingredients which have been scientifically proven to work.
In terms of their customer base, they have acknowledged one of the main struggles women go through when losing weight – hunger. Their carefully selected appetite suppressors work to stop you craving naughty treats and keep you on the right track to getting slimmer.
The good dose of caffeine will bring your metabolism to life and stimulate fat burning, as well as help you feel energized and focused on a calorie deficit.
We also like how Powher Cut has taken into consideration how important a balanced mood can be when losing weight, using mood elevators and cognitive boosters to promote a clearer, less volatile brain performance to keep you motivated.
Key Powher Cut Ingredients:
- Konjac Root – This soluble fiber expands in your stomach, leaving you feeling fuller for longer which should prevent unnecessary snacking[36].
- Caffeine from Arabica Coffee – Caffeine can not only help you stay alert and energized, it can also improve muscle endurance for better workout performance[37] and stimulate your metabolism through thermogenesis for increased fat burning[38].
- Choline – This nutrient contributes to effective lipolysis which is essentially the breakdown of fat in your body to be burned off[39].
- Chromium – Another support for your hunger, chromium helps curb cravings and reduces your appetite resulting in a lower daily calorie intake[40].
- Selenium – This powerful antioxidant plays a key role in your thyroid function which can help regulate your appetite and keep your metabolism working at the optimum levels it should be[41].
Pros
- Strong appetite control
- Some metabolism boosters and support
- Helps improve mood and brain power
- All-natural formula
- Developed for women
Cons
- Missing more metabolism boosters
- High price point
*Individual results may vary. Please speak with your doctor or physician before undertaking any new weight reduction, supplement, or exercise regime.
Metabolism Boosters for Women
So, there you have it – our list of best metabolism boosters for women.
But why is a metabolism booster important? And how does it help you stay in shape?
Read on to find out!
Why boost your metabolism?
In simple terms, your metabolism is what keeps your body alive. It works through a series of chemical reactions which converts food into energy so your body can function and stay active.
Everybody’s different with some people having naturally fast metabolisms, whilst others seem to struggle. We’ve all had that one friend who can eat whatever they want without gaining any weight, haven’t we? Well, that could very well be down to their metabolic speed.
The quicker your metabolism works, the faster food is broken down into usable fuel rather than stored. If you have a slow metabolism, you could suffer from the following:
- Weight gain
- Having to work extra hard to keep in shape
- Feeling tired and groggy
- Craving sugar
- Developing cellulite
The speed of your metabolism can be influenced by four factors[42]:
- Resting metabolic rate (RMR) – calories burned at rest/asleep
- Thermic effect of food (TEF) – calories burned through digesting and absorbing food
- Exercise – calories burned through working out
- Non-exercise activity thermogenesis (NEAT) – calories burned through non-exercise activities (fidgeting, cleaning)
Other influences for metabolism speed include your age, height, muscle mass and hormones – which is why metabolic rates vary from person to person.
This could explain why many people who have struggled with their weight for a long time turn to metabolism-boosting supplements to help reverse effects of a slow metabolism and start making headway to their perfect figure.
How to get the best out of your metabolism booster supplement
To make the most of your metabolism booster supplement and really maximize your weight loss results, you should follow the best practices to healthy fat loss. Here are 3 tips to follow alongside taking your metabolism booster, to get your desired results – faster!
- Start strength training
Resistance training is key to burning off excess fat and increasing muscle size, therefore boosting your calorie burn – even after exercise. Your metabolism booster will give you the natural energy lift you need to really smash those training targets and hit new PBs.
- Fuel up with clean food
Losing fat isn’t just about training more and taking a metabolism booster, you have to work on what you’re eating too. Cut out the processed food, sugary beverages and high-fat snacks. Instead, focus on eating healthy, whole replacements like lean proteins, veggies and fruit, healthy fats and whole grains to give your metabolism booster the best chance.
- Be consistent
Slowly but surely, you’ll get your results if you stay consistent. In fact, losing weight slowly is a sure-sign you’re doing everything right and means you’ll have more of a chance keeping that weight off. Take your metabolism booster every day to keep yourself on track. Give it time to start working. Be consistent and stick to your new routine to get maximum results!
Proven metabolism-boosting ingredients
It can be difficult to decipher through such a saturated market of metabolism-boosting supplements.
So, we’ve put together our top picks of proven metabolism-enhancing ingredients to look out for in supplement formulas.
Green tea
This herbal tea contains caffeine and EGCG – both with scientific research to back their positive effects on weight loss. Caffeine is a known thermogenic which helps increase your body’s heat levels which automatically stimulates your metabolism[43]. This process encourages more stored fat to be used as fuel which can lead to it being burnt off. EGCG also has a hand to play, as it keeps your metabolism functioning properly, ensuring it’s running at the speed it should be. This can lead to significant fat reduction[44].
These two factors combined work to support a healthy metabolic rate and increase weight loss potential.
Caffeine
As you know, caffeine is usually associated with energy however it has many more features which contribute towards a healthy metabolism – and weight loss in general. Its thermogenic abilities help to increase your body’s rate of burning fat and encourage the use of stored fat to help cool your body down[45].
On top of this, you could enjoy feeling more alert and focused[46], which is key to keeping up your day-to-day tasks. Caffeine also stimulates several hormones – including adrenaline, noradrenaline and serotonin – which also help to activate muscles[47] for better endurance[48] when you’re working out and keep you feeling happy and calm too.
The array of benefits that caffeine provides could provide holistic support when losing weight.
Cayenne Pepper
As a fiery spice, this may not be the ideal addition to everyone’s tastes at mealtimes. However, it has wonderous weight loss benefits, so is worth looking out for in metabolism boosters.
Like caffeine and green tea, cayenne works to raise the body’s internal temperature through the process of thermogenesis. Through this, it can increase your natural metabolic rate to break down more fat into usable energy your body can access – and burn off[49].
There are also many studies linking cayenne to successfully keeping appetite levels controlled. Results show that consuming cayenne keeps you feeling fuller for longer after it hits your system and reduces the cravings for sugary snacks too[50].
The combination of these two benefits could help you make serious progress on your weight loss journey.
Are metabolism boosters safe?
Whilst many metabolism boosters on the market claim to be safe, you should always pay attention to their labels and assess your tolerance before taking the full serving.
Always look out for proprietary blends – labels which do not specify individual doses of each component. If you are sensitive to any ingredient in a proprietary blend, you are risking side effects by taking the supplement as you don’t know exactly how much of the component you are sensitive to is in there.
In this respect, we’d always encourage you to opt for fully transparent labels which show exactly what makes up the supplement formula.
Generally, as long as you follow the supplement’s directions and don’t exceed the doses specified, you’re unlikely to suffer from side effects.
And if in doubt – do your research! In such a saturated market of nutritional supplements, it can be tough deciphering the effective and safe from the less credible ones. Check out real customer reviews, look up ingredients on reputable science-backed websites and keep a look out for nasty side effects.
Some ingredients like yohimbine, for example, are still used in many supplements but should be considered with caution. In yohimbine’s case, there were escalated reports of some worrying side effects including gastrointestinal distress, nausea, increased heart rate, headaches and, in some more severe cases, seizures[51]. For this reason, yohimbine has been banned in several countries including the UK, Canada and Australia.
In short, always do your own research before you purchase any new supplement to make sure it’s safe and worth your money.
Conclusion
We hope you’re a little bit more informed about the role of metabolism boosters – and how they could help you keep in shape.
From the top-performing supplements on the market to words of advice on what to look for and what to avoid in metabolism boosters, we hope you’ll be able to find the perfect supp to suit you and your needs.
Spot Me Girl work hard to give you the most up-to-date and accurate information when it comes to choosing supplements – and our extensive research on metabolism boosters on the market is a constant and highly reactive process to ensure we are keeping up with the most effective and safe products.
Which is why we know these 5 supplements are, in our opinion, currently the best metabolism boosters for women.
Want to grab a bottle of our #1 Hourglass Fit?
at: HourglassFit.com
Looking for a more holistic weight loss supplement? Check out Spot Me Girl’s Best Fat Burners for Women review to help you find one to suit you.
Here at Hey Spot Me Girl, we’re all about safety – so we wanted to remind you to double-check with your doctor or physician if you have any concerns at all about introducing a new supplement into your diet.
Whilst supplements could be a great boost to your lifestyle, they could also have adverse effects on your body if not used properly, or if you have sensitivity to any of the ingredients. So, make sure you always check the label fully. Also, make sure you stick to the usage instructions, particularly during the first week.
It’s also worth pointing out you shouldn’t rely on supplements alone to achieve your physique goals. Remember girls, supplements are enhancers – not the only answer!
A balanced diet, consistent workout plan and sensible lifestyle choices are the fundamentals behind real change – and your supplement should only ever be used as a way of optimizing the results of your hard work, not a way of replacing it altogether.
So, whatever supplements you choose to improve your life, make sure your health and welfare is always paramount over anything else every single time.
*DISCLAIMER: These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Products are intended for use alongside a diet and exercise regime. The views and nutritional advice expressed by Hey Spot Me Girl are not intended for the purpose of medical advice.
Individual results may vary. Please always consult your health care provider if you are taking any medications or have any medical condition. Must be 18 years or older to purchase. Always reference the ingredients and directions on the product label.
References
[1] https://pubmed.ncbi.nlm.nih.gov/23844093/
[2] https://www.healthline.com/health/food-nutrition/vitamins-to-boost-metabolism#b-vitamins
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3724376/
[4] https://pubmed.ncbi.nlm.nih.gov/11396693/
[5] https://pubmed.ncbi.nlm.nih.gov/16846858/
[6] https://pubmed.ncbi.nlm.nih.gov/11869656/
[7] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6770181/
[8] https://pubmed.ncbi.nlm.nih.gov/23179202/
[9] https://pubmed.ncbi.nlm.nih.gov/11396693/
[10] https://www.healthline.com/nutrition/5-htp-benefits
[11] https://pubmed.ncbi.nlm.nih.gov/9619120/
[12] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3083808/
[13] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3651299/
[14] https://www.medicalnewstoday.com/articles/219561#Role
[15] https://pubmed.ncbi.nlm.nih.gov/23844093/
[16] https://pubmed.ncbi.nlm.nih.gov/28627214/
[17] https://pubmed.ncbi.nlm.nih.gov/23844093/
[18] https://pubmed.ncbi.nlm.nih.gov/24630935/
[19] https://academic.oup.com/jn/article/130/2/272S/4686350
[20] https://pubmed.ncbi.nlm.nih.gov/7775331/
[21] https://pubmed.ncbi.nlm.nih.gov/10049999/
[22] https://pubmed.ncbi.nlm.nih.gov/2333832/
[23] https://www.medicalnewstoday.com/articles/322644
[24] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3892933/
[25] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5206698/#B19
[26] https://pubmed.ncbi.nlm.nih.gov/11396693/
[27] https://pubmed.ncbi.nlm.nih.gov/16784965/
[28] https://pubmed.ncbi.nlm.nih.gov/27393090/
[29] https://pubmed.ncbi.nlm.nih.gov/29445415/
[30] https://pubmed.ncbi.nlm.nih.gov/31249528/
[31] https://www.mayoclinic.org/drugs-supplements-zinc/art-20366112
[32] https://pubmed.ncbi.nlm.nih.gov/28627214/
[33] https://pubmed.ncbi.nlm.nih.gov/22922604/
[34] https://pubmed.ncbi.nlm.nih.gov/18331662/
[35] https://pubmed.ncbi.nlm.nih.gov/20499072/
[36] https://pubmed.ncbi.nlm.nih.gov/15614200/
[37] https://www.sciencedirect.com/science/article/abs/pii/S0899900710002510?via%3Dihub
[38] https://pubmed.ncbi.nlm.nih.gov/7485480/
[39] https://www.healthline.com/nutrition/what-is-choline
[40] https://pubmed.ncbi.nlm.nih.gov/18715218/
[41] https://www.ncbi.nlm.nih.gov/books/NBK279388/
[42] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2818133/
[43] https://pubmed.ncbi.nlm.nih.gov/23844093/
[44] https://pubmed.ncbi.nlm.nih.gov/28627214/
[45] https://pubmed.ncbi.nlm.nih.gov/2333832/
[46] https://pubmed.ncbi.nlm.nih.gov/10049999/
[47] https://pubmed.ncbi.nlm.nih.gov/10444642/
[48] https://pubmed.ncbi.nlm.nih.gov/7775331/
[49] https://pubmed.ncbi.nlm.nih.gov/23844093/
[52] https://pubmed.ncbi.nlm.nih.gov/21040626/ [53] https://www.medicalnewstoday.com/articles/324120 [54] https://www.healthline.com/health/l-theanine
