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Weight Loss
Phen24 Review: Does It Actually Work?
Weight Loss

Phen24 Review: Does It Actually Work?

Phen24 is a popular weight loss supplement that claims to take a 24-hour approach to weight loss, but does it actually work? We have reviewed this supplement, looking at the product’s benefits, ingredients, and side effects. Take a look at our article to find out more.

Phen24 review
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Phen24 is a popular supplement designed to support you on your weight loss journey. It contains many natural ingredients that have been proven to help you lose weight. Unlike some other weight loss pills, Phen24 tackles weight loss from all angles.

In this Phen24 review, we’re going to take a closer look at the weight loss supplement to find out its benefits, how it can help you lose weight, and if there are any drawbacks of use. Take a look now to find out more about the Phen24 supplement.

What Is Phen24?

  • The formula helps you burn calories 24 hours a day
  • Ingredients are completely natural and backed by science
  • The night formula may help you sleep better
  • Helps you manage cravings and reduce hunger pangs
Our rating:
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  • Natural ingredients
  • Helps to boost fat burning 24/7
  • Only available from the brand’s website, making it less accessible
  • An expensive supplement compared with others of its kind
  • Caffeine content could cause sleep cycle disruption for users who are sensitive to caffeine
  • Requires you to take multiple doses per day

The Phen24 weight loss supplement is designed to tackle weight loss 24 hours a day. It comes with a daytime and night formula. The two different formulas have different ingredients to tackle weight loss from different angles. Both aim to help you burn more fat and lose weight quickly.

As with all weight loss supplements, Phen24 is designed to be used alongside a healthy diet and is not a replacement for one. Instead, it enhances body fat burning and supports you in reaching your goal weight.

These weight loss pills are made with ingredients that increase calorie burning to support weight loss. They can help you slim your waist and are particularly good for those who often feel bloated in the morning.

⭐ Rating


✅ Pros

Suppresses appetite, burns fat, and boosts mood

❌ Cons

Day formula contains caffeine

🧰️ Is it habit-forming?


🔔 How to get started


💰 Price

From $69.99

The night formula is designed to help you get better quality sleep and may even reduce cortisol levels, reducing stress and the weight gain it may cause. The day formula helps you burn calories during more active periods of the day.

A pack of Phen24 capsules comes with 30 pills for the day and 60 pills for the night. You take one daytime pill in the morning and two nighttime pills in the evening before your last meal.

Phen 24 product
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Does Phen24 Work?

The main action of Phen24 is to support a better metabolism to enhance calorie burning and overall weight loss. The ingredients used in this weight loss supplement have been found to enhance thermogenesis, which helps you burn excess calories.

Increasing your metabolism means your body burns calories faster. Burning calories faster can be linked to increased weight loss, and a faster metabolism may help you maintain a healthy weight after weight loss.

Though it makes logical sense that increasing your metabolism will increase weight loss, there is actually little evidence that doing so causes more weight loss than other methods, like restricting caloric intake. In addition, slow metabolism is rarely ever the cause of increased weight gain.

Some of the ingredients in Phen24, like caffeine, have been shown to have a positive impact on your metabolism. However, whether this increase will actually aid weight loss remains to be seen.

What Ingredients Do Phen24 Day Capsules Contain?

The ingredients in the Phen24 daytime capsules are designed to support calorie burning and fat loss during more active periods of the day. To find out more about the ingredients in the Phen24 daytime capsules, take a look below.


Caffeine has been shown to have a positive impact on your metabolic rate. By increasing your metabolic rate, you’re increasing the number of calories your body burns at rest. The more calories you burn, the more body fat loss you’ll experience.

Along with the metabolic benefits of caffeine, it also has a positive impact on energy levels and can help you feel more alert and focused throughout the day, especially if you’re sleep-deprived.

Guarana extract

Guarana extract also contains caffeine and can help boost your metabolic rate by 3–11%. Increasing your metabolism should help burn excess calories.

If you eat at a calorie deficit, then you will create a larger deficit by speeding up your metabolism. A large calorie deficit means you burn more calories than you consume, thus helping your body burn excess fat.

Apart from a calorie deficit, other methods of weight loss that can help you burn more fat include intermittent fasting styles, like the 16:8 method, and the ketogenic diet, where you eat at a low-carb rate to induce ketosis.


L-phenylalanine is added to the Phen24 supplements to help suppress your appetite and reduce cravings. The ingredient has shown promise in improving satiety and inducing better appetite control when used in weight loss supplements.

Reducing your appetite and controlling hunger cravings is a really great way of ensuring you stick to a healthy diet and don’t get sidetracked by sugary snacks. It is also incredibly useful if you’re using Phen24 alongside a fasting diet, like the Warrior Diet, as it can make long periods of fasting more comfortable.

Cayenne powder

Cayenne powder comes from the cayenne pepper. It is another natural ingredient that is thought to speed up your metabolism. The capsaicin that is found in many hot peppers is a thermogenic chemical. It can stimulate the metabolism, helping you burn fat and lose weight.


Iodine is an essential mineral in the body. It is known to promote thyroid function and plays a major role in bodily improvements. As the thyroid is in charge of many hormones in the body, keeping it in good health is a good idea.

By adding iodine to your diet with dietary supplements, you are ensuring your hormones are being properly regulated by the thyroid, including hormones linked to fat stores and feelings of hunger.


Zinc is an important nutrient in the body and has been shown to boost metabolic function. In fact, zinc may be the most important ingredient in this supplement as it is known to reduce appetite, play a role in treating obesity, and has other health benefits, including reducing inflammatory markers and insulin resistance.


Manganese plays a key role in metabolism. It assists with metabolizing proteins, cholesterol, and carbohydrates and ensures the proper usage of amino acids in the body. It is also essential for the utilization of many vitamins, including vitamins C and E.

The proper use of all we consume is integral to healthy weight loss. Making sure our body is processing the carbs, proteins, and fats we eat can help reduce weight gain and body fat.


Copper plays a role in the removal of fat from your cells. It helps convert this fat into energy to give you a boost. Copper is found in many vegetables, including dark, leafy greens like kale and spinach.

What Ingredients Do Phen24 Night Capsules Contain?

The Phen24 night formula uses a different set of ingredients to tackle weight loss during your resting hours. Below, we’ve summarized each ingredient and how it can help with 24-hour weight loss.


A natural dietary fiber, glucomannan is a fantastic weight loss ingredient. It takes up space in the stomach, promotes a feeling of fullness, and delays stomach emptying to increase satiety. It helps you snack less before bedtime and ensures you don’t eat again until morning. It is found in many fiber supplements.

Additionally, research shows that glucomannan reduces the absorption of protein and fat, helping reduce your stored fat.

Ascorbic acid

Better known as vitamin C, ascorbic acid helps you maintain a healthy weight. Research has shown that vitamin C plays a role in preventing obesity. It does so by regulating the release of fat from fat cells.

Low vitamin C levels are known to cause excess fat, and even in apparently healthy young adults with little excess fat, it contributes to higher levels of belly fat.

Griffonia extract

Griffonia extract has benefits for sleep, anxiety, and weight loss. Many of griffonia’s benefits come from a 5-hydroxytryptophan (5-HTP), which is found in the seeds.

5-HTP has been linked to appetite suppression and has been shown to work against hunger hormones. This helps you eat less and ensures you don’t snack after your last big meal of the day.

Additionally, as 5-HTP helps with the production of serotonin, it can help improve your sleep quality. Serotonin is converted into melatonin by the body. This hormone regulates sleep and helps establish a proper sleep cycle.

Good sleep has been linked to a healthy diet, better weight control, and improved overall health.


Choline is found in many weight loss supplements because it regulates excess fat in the blood. It is known to improve satiety and promote decreased consumption throughout the evening to prevent late-night snacking after your dinnertime meal.

Green tea extract

High in antioxidants, green tea extract is well-known in the health industry and has some incredible weight loss benefits. With a mix of catechins and caffeine, green tea extract is known to assist weight loss by promoting thermogenesis. In effect, green tea extract makes the body better at burning calories.


Hops have recently been found to induce fat loss in overweight individuals, making this a great weight loss ingredient. In addition, hops could have benefits for sleep. In studies examining the benefits of non-alcoholic beer, hops were shown to improve sleep quality.

Calcium D-pantothenate

Calcium supplementation is thought to be an effective method of weight control. Indeed, calcium deficiency has actually been associated with higher overall body weight. As such, adding this nutrient to your diet could help you manage your weight better.


Better known as vitamin B6, this ingredient is an effective tool for weight loss and works to improve overall body composition. Vitamin B6 supplementation has been shown to reduce biochemical factors that are associated with obesity and could be effective in reducing your BMI too.


Another B vitamin, thiamine plays a major role in regulating our energy levels. In the body, vitamin B1 is part of the process that converts carbohydrates in our body’s cells into energy. As such, a vitamin B1 deficiency could result in a slower metabolism.

Chromium picolinate

Studies have shown chromium picolinate can be effective in reducing episodes of binge eating. Furthermore, chromium plays a role in nutrient metabolism and, as such, may help induce weight loss.

It is a commonly found ingredient in weight loss supplements, though research is not conclusive on its effectiveness for weight loss.


In weight loss supplements, D-biotin is included to help increase resting metabolism. This increase will ensure your body continues to burn through calories at an optimal rate, even during resting periods like sleep.

Phen24 Supplement Facts
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3 Benefits of Phen24

When researching for our Phen24 review, we came across a few purported benefits of the supplement. We’ve summarized them below.

#1 24-hour weight loss

Phen24 is designed to adjust to your activity level. The two different supplement formulas have been created to ensure your metabolic rate is boosted day and night.

While during the day your metabolism is quicker, at night, your body shifts to focus on other functions, like digestion. The night capsules ensure your body continues to burn calories through the night.

There are many supplement products on the market designed to help you lose weight, but very few focus on this 24-hour metabolic boost.

#2 Increases fat metabolism

The ingredients included in Phen24 enhance thermogenesis. This process helps the body burn calories quicker, and the quicker you burn through consumed calories, the more likely your body is to begin burning stored fat.

Reduction of excess fat increases overall weight loss and can help you feel more confident in yourself. In addition, reducing excess fat may have positive effects on your overall health.

#3 Promotes better sleep

Another unique quality of the Phen24 dietary supplements is that they work to ensure you get better sleep. Many supplement products miss this out, even though better sleep has been linked to better weight control and overall health.

There are many ingredients in the Phen24 nighttime capsules that enhance sleep, help you fall asleep quicker, and ensure you get quality sleep. In addition, the daytime formula helps you feel more alert and focused and improves energy levels.

These supplements can be used while on an intermittent fasting regime and could help you feel more alert during long periods of fasting.

5 Possible Side Effects of Phen24

As with any weight loss supplement, Phen24 does have some possible side effects. Take a look below to find out more about the potential negative effects of using this supplement.

#1 Caffeine effects

For anyone who is sensitive to caffeine, the Phen24 daytime formula may cause jitteriness and other negative side effects. While the caffeine quantities are not super high, others may also find that, when taken on an empty stomach, the supplements cause shakiness from the caffeine.

This side effect is unlikely to affect everyone and should not deter you from using caffeine-based supplements to lose weight.

#2 Fiber content

Glucomannan is a natural form of soluble fiber. While fiber supplements tend to be a good choice for people suffering from constipation, diarrhea, and bloating, some people may find that adding more fiber to their diet could cause these issues.

Glucomannan is found in the Phen24 nighttime capsules and is intended to improve satiety and stop you from snacking late at night.

#3 Nausea

Many fat-burning supplement users tend to feel nauseous upon using the supplements for the first time. This nausea is generally attributed to the empty-stomach effect, where the supplements are taken on an empty stomach, causing stomach upset.

You can generally get around this by taking your supplements with food, but if nausea continues, you should stop taking the supplement immediately.

#4 Fatigue

With appetite suppression comes a reduction in caloric intake. This can lead to tiredness and fatigue in weight loss supplement users. Though Phen24 includes many energy-boosting ingredients, you may find you feel weary in the first few days of taking the product.

#5 Unhealthy weight loss

Unfortunately, the weight loss seen with dieting pills like Phen24 can become addictive for some people. Unhealthy weight loss is anything more than 1–2 pounds per week. If you are losing anything more than this, you should stop taking the pills.

Unhealthy weight loss can have detrimental effects on your health and should be avoided at all costs. If you have a history of eating disorders, it is not recommended that you take Phen24.

How Much Does Phen24 Cost?

For one pack of Phen24 diet pills, you’ll need to spend $74.99 for a 30-day supply. This is a relatively expensive option when it comes to diet pills, and there are cheaper alternatives on the market that are just as effective.

If you’re looking to use Phen24, you could opt for the 3-month offer. This will set you back $224.99 but does come with two extra boxes, giving you a five-month supply.

The pills also come with a 60-day money-back guarantee.

Phen24 vs. PhenQ

Both PhenQ and Phen24 are made by the same company. They use some similar ingredients, and both help you lose weight faster. They are also designed to suppress appetite and increase energy levels. PhenQ is not a 24-hour solution like Phen24, though.

PhenQ and Phen24 differ in how they help you lose weight and enhance exercise performance at different rates. PhenQ also requires only 1–2 doses per day, whereas Phen24 requires three.

Phen24 is the better choice for those looking to improve their metabolism and enhance weight loss around the clock, but PhenQ is a simpler pill to take and requires less effort.

If you want to learn more about these differences, we recommend reading this article: PhenQ vs. Phen24: Differences, Ingredients, and Side Effects.

Phen24 vs. Competitors

DoFasting Supplements
Keto Cycle Supplements

Natural ingredients

Weight maintenance with little exercise needed

Appetite suppression

Gut health promotion

Regulates cholesterol

Non-GMO, gluten-free, vegan

Free US shipping

Delicious flavor Boosts energy levels

Makes getting into ketosis easier

Helps the body burn fat



Natural ingredients

24-hour fat burning

Only one flavor

Not a vegan-friendly option

Best used on the keto diet


Only available on the brand’s website

Caffeine content not suitable for all

Requires multiple doses per day

DoFasting Supplements
Keto Cycle Supplements
Overall Rating

Natural ingredients

Weight maintenance with little exercise needed

Appetite suppression

Gut health promotion

Regulates cholesterol

Non-GMO, gluten-free, vegan

Free US shipping

Delicious flavor Boosts energy levels

Makes getting into ketosis easier

Helps the body burn fat



Natural ingredients

24-hour fat burning


Only one flavor

Not a vegan-friendly option

Best used on the keto diet


Only available on the brand’s website

Caffeine content not suitable for all

Requires multiple doses per day


What is the recommended dose of Phen24?

Phen24 requires you to take your daytime capsule at the beginning of the day and then take two nighttime capsules before your last big meal of the day.

Is Phen24 safe to use?

Phen24 is considered safe to use. It contains all-natural ingredients which have been proven to have no ill effects on humans.

Where can I buy Phen24?

You can only buy Phen24 on the manufacturer’s website at present. This makes the supplement slightly inaccessible. There are no known efforts to have Phen24 available from other manufacturers as of yet. Phen24 comes with a 60-day money-back guarantee.

How We Tested

When we write reviews for weight loss products, we want to make sure we’re giving our readers a well-rounded view of the product. We also want to ensure that all of the products we review will actually benefit our readers.

We assess all of our products against four categories: quality, effectiveness, price, and brand reputation. See below to find out how we rated Phen24 in each of these categories.

Quality 9/10

Phen24 contains many quality ingredients. They are all naturally derived and have been backed by science. This makes Phen24 a quality supplement to try out for your weight loss journey.

When looking at health products, whether runner’s supplements or water pills for weight loss, you should always ensure the products you’re buying are of good quality and will not harm your health.

Effectiveness 7/10

Phen24 appears to be a relatively effective product. Most users report having experienced weight loss while using the supplements; however, some ingredients may not be as effective as suggested, according to scientific evidence.

If you’re taking dietary supplements to improve your health or aid you in losing weight, you want them to be effective. Always do as much research as possible on the benefits of the supplement you plan on taking.

Price 6/10

Unfortunately, the drawback of Phen24 is that it is an expensive product compared to others of its kind. While not many supplements focus on the full 24 hours of weight loss, there are plenty that claim to boost your metabolism without costing as much as Phen24.

Good health should be accessible to everyone, which is why the price is incredibly important to us in our product reviews.

Brand reputation 8/10

Phen24 comes from a reputable brand within the wellness industry. They have produced a number of supplement products that have been well-received by reviewers, users, and experts alike.

Brand reputation isn’t the be-all and end-all, but if it’s coming from a reputable brand, you know the product is likely going to be good too.

A Word From Our RD

Weight loss supplements are an intentional weight loss intervention many people turn to after limiting food intake, changing exercise habits, and other diets that do not work. If losing weight is difficult for you, you may be considering trying out these dietary supplements.

While weight loss supplements are a great way of reducing your food intake and improving your metabolism, you should always use them with caution. These supplements are in no way a replacement for a healthy diet and exercise.

If you plan to use a weight loss supplement, ensure you combine it with a healthy and balanced diet filled with whole grains, fruits, and vegetables and increase your activity levels throughout the day.

You could also try using weight loss supplements alongside well-known weight loss diets, like the keto diet, or an intermittent fasting plan, like the 5:2 method.

When choosing a weight loss supplement, you should look out for products that could also boost energy levels, promote better sleep, and support your immune system to ensure it’s doing good for all aspects of your health.


Our Phen24 review has covered everything from the benefits of this weight loss pill to the possible side effects and ingredients. Along with weight loss and metabolism benefits, this supplement might also rejuvenate skin, reduce cholesterol, and help control your appetite.

Written by
Edibel Quintero is a medical doctor who graduated in 2013 from the University of Zulia and has been working in her profession since then. She specializes in obesity and nutrition, physical rehabilitation, sports massage and post-operative rehabilitation. Edibel’s goal is to help people live healthier lives by educating them about food, exercise, mental wellness and other lifestyle choices that can improve their quality of life.
Fact checked by Rosmy Barrios, MD
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