Phentaslim Reviews
Fat Burners

Phentaslim Reviews: Is This More Than A Diet Pill?

Phentaslim by Optimum Nutra




Side Effects


Core Nutrients



  • Contains Caffeine and Green Tea
  • Contains Dietary Minerals and Vitamins


  • Poor customer reviews
  • Lack of availability

Phentaslim Summary

Phentaslim has an okay mix of ingredients for fat-burning and improving mood and focus. There are a few ineffective and unnecessary ingredients in the formula. It also includes Caffeine Anhydrous which may not be good to have in the evening and may cause unwanted side effects. Customer reviews suggest that Phentaslim is too pricey and doesn’t give them the results they want.

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Phentaslim Reviews | What is Phentaslim?

Phentaslim is a weight-loss supplement that claims to:

  • Burn fat
  • Increase mental clarity
  • Reduce cravings
  • Boost energy
  • Improve health

The official Phentaslim website states that Phentaslim can be able to do all of this for you “in less than one minute a day!”

We take a closer look into this weight loss supplement and give you the full scoop on all the ingredients, side effects, and product comparisons.

Phentaslim Ingredients

Phentaslim Ingredients

Phentaslim ingredients include:

  • Green Tea
  • Caffeine Anhydrous
  • L-Theanine
  • Acetyl L-Carnitine
  • L-Tyrosine
  • Panax Ginseng
  • Guarana Seed
  • Magnesium
  • Cayenne Pepper
  • Niacin (Nicotonic Acid)
  • Zinc (Zinc Acetate)
  • Black Pepper Extract
  • Vitamin B Complex (B6, B2, B1, B12)

The formula in Phentaslim includes essential vitamins and minerals along with fat-burning ingredients to help you lose weight safely.

Next, we’ll be going more in-depth on Phentaslim ingredients.

Green Tea

Green Tea is commonly known as a hot drink steeped from Green Tea Leaf. Green Tea Leaf contains important antioxidants, especially one called epigallocatechin gallate or EGCG. EGCG is a substance that can boost your metabolism.

This Green Tea antioxidant can also help promote weight loss by boosting fat-burning hormones.

EGCG prevents an enzyme from breaking down the fat-burning hormone norepinephrine. With more norepinephrine, more fat cells can be broken down and released into the bloodstream for energy.

This is a great ingredient to have in Phentaslim to help promote fat burn and energy boost.

Caffeine Anhydrous

Caffeine Anhydrous is chemically similar to Caffeine. However, Caffeine Anhydrous is processed in a laboratory to filter out water and other chemical components. This causes Caffeine Anhydrous to be more concentrated and more potent than normal caffeine.

Caffeine is known for its metabolism and energy boost. It is also known to reduce food cravings and burn fat. Caffeine Anhydrous is much stronger so you would not need a lot to get the same effects.

Caffeine Anhydrous is a great Phentaslim ingredient to help you shrink that waistline.

Phentaslim Side Effects


This is one of the active ingredients in green and black tea. It is a relaxing agent, without the drowsiness. So it works well with caffeine.

This is a good ingredient to have in Phentaslim to help with relaxation and mood management.

Acetyl L-Carnitine

L-Carnitine is a natural compound produced in the body. Acetyl L-Carnitine is another form of it that is easier to pass through the blood barrier.

It is most often found in food, especially beef and other meats.

Acetyl L-Carnitine is known for boosting athletic performance by reducing fatigue. Studies have not shown that it is effective in fat loss.

This is an okay Phentaslim ingredient because it reduces fatigue so you have more energy to work out and play sports. It can still help you with your weight loss goals.


L-Tyrosine is an amino acid found in food that helps produce dopamine and adrenaline. It is known for reducing stress and help improve memory in stressful situations.

However, our body is good at regulating L-Tyrosine. So supplementing more L-Tyrosine would not make a difference.

L-Tyrosine is a good but unnecessary ingredient to have in Phentaslim as a stress reliever.

Panax Ginseng

Panax Ginseng or also known as “True Ginseng” is commonly used in traditional Chinese medicine.

It has many positive health benefits such as improving mood, immunity, and cognition.

There are few studies supporting its use for male testosterone and libido boosting. Panax Ginseng also claims to be able to boost your energy and help improve exercise. However, studies on these benefits are not certain.

This is a good Phentaslim ingredient to have for its mood and mental improvement benefits.

Guarana Seed

Also known as Paullinia cupana, Guarana is a plant native to Brazil in the Amazon. Tribes in the Amazon use the guarana for its therapeutic benefits.

Guarana is also commonly found in energy and soft drinks. It contains a variety of stimulants like caffeine and antioxidants like catechins.

Guarana Seed benefits include improvement in energy and focus, as well as a reduction in fatigue. It also contains caffeine which is a great metabolism booster to help you lose weight.

This ingredient is great for Phentaslim to help give you a boost in energy and focus with its caffeine contents.


Magnesium is a dietary mineral that is crucial to the human body. It is normally supplemented through nuts and leafy vegetables.

Being magnesium deficiency can lead to increased blood pressure, reduced glucose tolerance, and neural excitation. With enough magnesium, you can balance out your blood pressure and improve your insulin sensitivity.

Magnesium is a good Phentaslim ingredient to help you supplement your Magnesium levels and stay healthy.

Does Phentaslim Work

Cayenne Pepper

Cayenne Pepper is a chili pepper that is commonly used as a spice in many different regions.

It contains many health benefits such as boosting your metabolism, suppressing hunger and lowering blood pressure.

Capsaicin, the active ingredient in cayenne peppers, is thermogenic. This means that it raises your body’s temperature to help boost your metabolism and burn more calories.

Cayenne Pepper can also reduce hunger. You will be able to eat less and feel fuller longer.

This is a great Phentaslim ingredient for appetite suppression, metabolism boost, and fat burn.

Niacin (Nicotonic Acid)

Also known as Vitamin B3, Niacin is an essential vitamin to support the function of many enzymes.

Niacin supplementation helps improve cardiovascular health.

This is a good essential vitamin to include in Phentaslim.

Zinc (Zinc Acetate)

Zinc is an essential dietary mineral that aids many enzymes in the body. It plays a part in antioxidants, brain function, and the immune system.

It is easy to lose Zinc through sweat. A lack of Zinc in the body will lead to decreased insulin sensitivity and testosterone.

Zinc is commonly supplemented by food but zinc supplements can be used.

This is a great Phentaslim dietary mineral to help boost your immune system and stop you from getting sick often.

Black Pepper Extract

Black Pepper is a commonly used spice in many regions of the world. It contains a compound called “piperine” that works to balance out the effects of other drugs and supplements in the body.

Black Pepper is usually compounded with other supplements to increase their absorption.

This is a good ingredient in Phentaslim to help give the other fat-burning ingredients a boost in your body.

Phentaslim Scam

Vitamin B Complex (B6, B2, B1, B12)

This Phentaslim review will go over the entire Vitamin B complex found in the Phentaslim ingredients.

Vitamin B6 – Pyridoxine

Can boost brain function and aids the central nervous system

Vitamin B2 – Riboflavin

Helps in the breakdown of fats, proteins, and carbs

Vitamin B1 – Thiamine

A nutrient that is essential in all body tissues needed to function properly

Vitamin B12 – Cobalamin

Used in nerve tissue, brain function, and aids in the production of red blood cells

Vitamin B complex can be naturally supplemented through food consumption.

It is good that Phentaslim includes the Vitamin B complex to help you maintain your dietary health while losing weight.

Phentaslim Ingredients Summary

Overall, Phentaslim does a good job with its formula. The main ingredients for fat burning and weight loss are Green Tea, Caffeine Anhydrous, and Cayenne Pepper.

There are a few ineffective or unnecessary ingredients included. But Phentaslim does include a few ingredients to help with mood, stress, and mental focus like Guarana Seed, L-Theanine, and Panax Ginseng.

Phentaslim also includes essential dietary vitamins and minerals like a Vitamin B complex, Magnesium, and Zinc.

These are good Phentaslim ingredients that fulfill the Phentaslim claims. However, only having 3 ingredients for fat burning would not be enough to help you lose weight.

Phentaslim Side Effects

From what we know about Phentaslim, all of these Phentaslim ingredients should be safe at these dosages.

However, if you have a history of medical issues or allergies, please consult your general practitioner if you have any questions or concerns.

How Do You Take Phentaslim?

Here’s how you take Phentaslim:

You take one Phentaslim capsule 20 minutes before breakfast, another Phentaslim capsule 20 minutes before lunch and the final Phentaslim capsule late in the afternoon just before your meal.

Phentaslim Reviews

Phentaslim – Where To Buy

Phentaslim can only be purchased from the official Phentaslim website.

Phentaslim is not available in stores and online retailers such as GNC, Amazon, or Walmart.

Phentaslim Coupon Code

There is no reliable Phentaslim coupon code but the official Phentaslim website regularly has deals on Phentaslim that doesn’t require a Phentaslim coupon code.

Phentaslim Scam | Is Phentaslim a Con?

Phentaslim is not a scam but it may not be the best fat burner out there for you.

While Phentaslim claims to do so many things for you, our Phentaslim review of the ingredients has shown that there are few fat-burning ingredients.

You could benefit much more from an effective weight loss supplement with multiple fat-burning ingredients.

You don’t want “just okay” weight-loss results. If you’re serious about shrinking that waistline, you’re going to want to get the most effective fat burner on the market for your money.

Phentaslim Customer Reviews

Phentaslim Customer Reviews

According to real Phentaslim customer reviews, there are a lot of mixed reviews with most of them being negative experiences.

Few users also complained that Phentaslim is too expensive for its mild effects.

Overall, you could do a lot better with a different and better fat burner on the market.

Phentatrim or Phentaslim

Phentatrim is another weight loss product made by Optimum Nutra. The main active ingredient in Phentatrim is Konjac Root or glucomannan. This is the only fat-burning ingredient in Phentatrim.

Phentaslim has three main fat-burning ingredients, as well as other ingredients to help energy and focus.

Phentatrim or Phentaslim? The answer is Phentaslim if you’re looking for a more effective fat burner between the two.

Phentaslim vs Phen375

Phen375 is an appetite suppressing dietary supplement. It’s mainly composed of two main fat-burning ingredients and the rest being dietary nutrients.

Phentaslim already contains the two main ingredients that Phen375 has for fat burning, which is caffeine anhydrous and cayenne pepper.

Phentaslim vs Phen375? Phentaslim wins again for having more fat-burning ingredients and more dietary vitamins and minerals.

Sletrokor vs Phentaslim

Sletrokor is an all-natural diet pill from the 18Nutrition company. It claims to be more than just a weight loss pill as it also improves immune function, decreases cholesterol, reduces blood pressure and more.

When we look into the Sletrokor ingredients, we can see that it has two main ingredients for fat burning (Cider Vinegar and Garcinia Cambodia). However, studies have shown that Cider Vinegar and Garcinia Cambodia have not been proven effective for weight loss.

Sletrokor vs Phentaslim? We have to say Phentaslim wins because it contains three effective fat-burning ingredients compared to Sletrokor’s two ineffective ingredients.

Phentaslim Review

Phentaslim Reviews | Does Phentaslim Work?

In this Phentaslim Review, we covered the bases on ingredients, side effects, and real Phentaslim reviews.

We found that:

  1. There are few effective fat burning ingredients in Phentaslim.
  2. The rest being mood and focus improving ingredients and dietary minerals and vitamins.
  3. It has a decent amount of servings.
  4. Phentaslim reviews from customers claim that it is ineffective and expensive.

Would we recommend Phentaslim? No, we wouldn’t.

There are many more effective fat burners on the market that can get you to your weight loss goals faster.

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Leanbean Reviews

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