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Phentaslim

Phentaslim is a metabolism boosting diet pill that is available exclusively online from the official product website. The website describes numerous benefits in using the product and has been used by many thousands of customers to maximise their potential weight loss.

Below we take an in-depth look at Phentaslim to see how effective it is at helping with your weight loss goals.

Phentaslim Pros

  • Over 100,000 customers
  • Clinically proven weight loss quantities
  • Made in a “GMP” certified facility with solid ingredient profile
  • 60 day money-back guarantee

Phentaslim Cons

  • Only available direct from manufacturer- no price competition
  • Contains caffeine
Watchdog Approved Diet Pills

Phentaslim Review

Phentaslim Facts

  • Manufactured by Optimum Nutra Inc
  • 90 pills per bottle
  • Contains a range of clinically proven ingredients

Phentaslim is manufactured by a company called Optimum Nutra Inc. The Phentaslim website starts off with a testimonial from a happy customer who claims to have lost 32 pounds over a period of 5 weeks and extolls the virtues of using Phentaslim to achieve this.

It is said that this can be achieved as the product; increases the metabolism, reduces excess body fat, decreases hunger cravings, and increases energy levels. The product also claims to support good mental balance, good concentration and co-ordination.

The product is manufactured in Government inspected facilities that have met the highest standards of production. The company can be contacted using the information provided on the official website and some customers will like that there is a direct sales line to take phone orders.

Optimum Nutra Inc. have a excellent reputation for customer service, and we were unable to find any customer complaints about the company. We sent an inquiry via the contact form regarding some of the ingredients and received a detailed reply back within a couple of hours. It feels like they are aiming for a personal touch and put the customer first.

Phentaslim Benefits:

  • Uses clinically proven ingredients in the right amounts
  • Marketed as an effective fat burning and appetite suppressant that boosts energy
  • Full 60-day money-back guarantee and free worldwide shipping options

How to Take Phentaslim

Take three capsules per day. The manufacturers do not state on the website how best to distribute these three capsules, but we suggest taking two with breakfast, and the third capsule either with lunch or about an hour before exercise. Customers may also want to start with a lower dosage to assess personal tolerance levels.

What Does Phentaslim Claim To Do?

The manufacturer of Phentaslim describes the following benefits for the product:

  • Boost Metabolism – Ramp up your metabolism so that you burn more calories and promote your fat loss.
  • Longer Lasting Energy – Boosts energy levels without that crash and burn feeling, so you’re ready for anything!
  • Suppress Appetite – Suppresses your appetite so that you stop snacking between meals
  • Support Mental Performance – Supports good mental balance, good concentration and co-ordination.

So What Is Phentaslim and What Are The Ingredients For Phentaslim?

The ingredients used in Phentaslim are listed below. Each daily serving of three capsules contains a total of 1800 mg of the Phentaslim formula. The individual ingredient quantities provided below are per three capsule serving.

  • Green Tea (375 mg): Green tea is high in a group of antioxidants called catechins. Studies have suggested that catechins increase thermogenesis in the body, whilst caffeine increases energy expenditure by boosting the metabolism slightly for few hours.
    Source: http://ajcn.nutrition.org/content/70/6/1040.full
  • Caffeine (270 mg): Numerous studies have shown that caffeine boosts energy levels and alertness, as well as mildly boosting the metabolism. The effects shown in studies are small, and some studies are inconclusive.
    Source: http://www.mayoclinic.org/healthy-living/weight-loss/expert-answers/caffeine/faq-20058459
  • L-Theanine (225 mg): This amino acid may play a small role in weight loss, as well as increasing feelings of relaxation. It may also reduce the negative side effects of caffeine, although there is seemingly no strong clinical evidence to support this claim.
    Source: http://healthyliving.azcentral.com/ltheanine-weight-loss-6800.html
  • L-Carnitine (200 mg): There is some evidence that supplementation of acetyl-l-carnitine can reduce body fat, although the strongest results were seen in the elderly. The ingredient also boosts energy levels, and is used to treat fatigue.
    Source: http://examine.com/supplements/L-Carnitine/
  • L-Tyrosine (200 mg): Some people use Tyrosine as an appetite suppressant, but there is little clinical evidence that it is effective for this use. Large doses of tyrosine may be useful for increasing alertness, especially in people who are sleep deprived.
    Source: http://www.webmd.com/vitamins-supplements/ingredientmono-1037-TYROSINE.aspx?activeIngredientId=1037&activeIngredientName=TYROSINE
  • Panax Ginseng (120 mg): Panax Ginseng is associated with improved cognition in fatigued subjects and slight decreases in muscle damage after exercise. It also appears to reduce fatigue, and consumers report feeling calmer after consumption.
    Source: http://examine.com/supplements/panax-ginseng/
  • Guarana Seed (100 mg): A berry that is naturally high in caffeine, it is often an ingredient in energy drinks and diet pills.
    Source: http://en.wikipedia.org/wiki/Guarana#Other_uses_and_side_effects
  • Magnesium (80 mg)
  • Cayenne Pepper (50 mg): Capsaicin, which is found in Cayenne pepper, is thought by some to play a role in weight loss. Some studies suggest it could suppress the appetite mildly, whilst others suggest that the heat causes a thermogenic reaction in the body, burning more calories for a period of time. However, there are also studies that show cayenne has little or no effect upon weight loss attempts.
    Source: https://umm.edu/health/medical/altmed/herb/cayenne
  • Niacin (20 mg): Vitamin B3, or Niacin, is responsible for helping to produce energy from consumed food, as well as helping keep the nervous and digestive systems healthy. Niacin can be easily sourced in adequate amounts from a balanced diet. Persistent excessive consumption of niacin has been linked with increased rates of obesity in American Children.
    Source: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2874142/
  • Zinc (15 mg)
  • Black Pepper Extract (6 mg): Black pepper extract (piperine) is used for increasing the bioavailability of nutritional compounds. In other words, it increases the amounts of nutrients that are absorbed into the body in the digestive tract. It may also increase the absorption of various drugs, which may lead to potential side effects.
    Source: http://bioperine.com
  • Vitamin B6 (1.8 mg): Vitamin B6 has several important functions in the body, including ‘allowing the body to use and store energy from protein and carbohydrates in food’. Whilst taking excess amounts of vitamin B6 will not infinitely improve this ability, a deficiency could make it more difficult to lose weight.
    Source: http://www.nhs.uk/Conditions/vitamins-minerals/Pages/Vitamin-B.aspx
  • Vitamin B2 (1.7 mg): This vitamin is used for keeping the eyes, skin and nervous system healthy, as well as helping the body to release energy from carbohydrates. It is naturally present in milk, eggs, rice and fortified breakfast cereals, and so people should be able to get their daily guideline amounts from a healthy balanced diet.
    Source: http://www.nhs.uk/Conditions/vitamins-minerals/Pages/Vitamin-B.aspx
  • Thiamin (Vitamin B1) (1.3 mg): The NHS states that thiamine is important for helping to break down and release energy from food. This may be relevant for maintaining a healthy metabolic rate, but in the majority of cases people can obtain all the thiamine they require from their daily diet.
    Source: http://www.nhs.uk/Conditions/vitamins-minerals/Pages/Vitamin-B.aspx
  • Vitamin B12 (10 mcg): Vitamin B12 is naturally present in many foods, primarily meat, fish and dairy products. It has several roles, including aiding in releasing energy from consumed food, and keeping the nervous system healthy. It may be that a deficiency hinders weight loss, but taking excess amounts could be, according to the NHS, potentially harmful.
    Source: http://www.nhs.uk/Conditions/vitamins-minerals/Pages/Vitamin-B.aspx

So What Does All This Mean?

Whilst many diet pill manufacturers offer statements and make dramatic claims about how their product works to aid weight loss, very few offer evidence for their claims. The manufacturers of Phentaslim have included numerous links to the clinical trials they have referenced.

phentaslim holding bottleCaffeine will increase the bodies metabolism for a period of a few hours after consumption. The content for each capsule is about the same as a cup of coffee, and so spacing out the doses, taking two with breakfast and one with lunch or before exercise will maximise the energy boost and metabolism boost throughout the day. Theanine will help to counteract some of the “jitters” a few people experience. The inclusion of black pepper extract will likely increase the absorption of caffeine, enhancing its effects.

Green tea and cayenne pepper will both increase thermogenesis in the body, burning more calories in the process. Cayenne pepper may also have a small appetite suppressing effect, although studies suggest that this is small.

Acetyl-L-Carnitine and Tyrosine are both amino acids, and so can be used by the body to create muscle mass when the consumer is under-taking muscle building exercises.

The vitamins provided in this supplement are of an appropriate level compared to the recommended daily intake. Consumers should ideally not combine this product with other sources of caffeine or other B vitamin supplements.

Does Phentaslim Have Any Side Effects?

Whilst some of the ingredients used in Phentaslim can cause side effects in a very few consumers who are very sensitive to caffeine, the dosages are well-balanced to be effective whilst making side effects uncommon.

As with anyone who is taking prescription medication, you should consult your doctor before taking a product of this type. Theanine claims to help to counteract some of the potential side effects of caffeine, including any jitters.

Caution:

Always swallow the capsules with water. Do not take if pregnant or nursing. If you have any medical conditions or are taking any medication, consult your doctor before use. Not suitable for anyone suffering from any heart related health issues, including but not limited to high blood pressure. Not suitable for those under the age of 18.

Any Phentaslim Reviews From Customers?

Numerous customers have left their feedback for Phentaslim here at Diet Pills Watchdog. A selection of these comments are below:

Started taking 1 of these each morning on Wed this week and am down 2 pounds already! Has given me the ability to get out of recliner and be the wife and grandmother Ive always wanted to be! Spotlessly clean house and flowerbeds are weeded. Been to the gym every day since starting these! Has really helped with my hunger and curbed appetite. I pray they continue to help like this!

I received my order in the mail super fast which was awesome. Best of luck to everyone who takes these, they’re great!

So after a full two month course on these pills, I am very happy to announce that I have lost two and a half stone in two months! I would recommend these to anyone hoping to get a head start on their weight loss as the extended energy, fuller feeling of stomach and ease of use make these HIGHLY commendable.

I ordered this product mid-April and am really liking it so far! Have lost noticeable weight (that people comment on). I do exercise regularly anyway so haven’t changed anything there, it’s just given me a much needed boost. The only thing I will say is that – as a big caffeine drinker myself – do not drink coffee while taking this product, at first I couldn’t sleep/was feeling a bit jittery. However when I cut the coffee down that all stopped! Good product if taken correctly!

Two weeks ago I was 20st 11.4lbs. Weighing this morning I am 19 st 11.6lbs. 0.2 pounds away from losing a stone in two weeks.
I have drank only water and eaten clean over the two weeks. The pills are amazing for helping to suppress your appetite but I recommend you have a small amount to eat after the 20 min recommendation of taking them or you will experience a weird stomach until some food is digested. The energy I am experiencing from these pills has really helped me down the gym and has finally kicked me into gear for losing weight. I highly recommend these pills for helping towards your overall diet and exercise plan but that’s all it is. A booster for your diet and exercise. You put in the effort and these pills will help you get the most out of what you do. 9.9/10.

So Does Phentaslim Work?

Both the ingredients list and the customer reviews we have located suggest that Phentaslim does aid weight loss without the side effects seen in other supplements.

Appetite suppression seems to be very effective for many consumers too, meaning this could help you to stick to a lower calorie diet plan you may be following.

Where Can I Buy Phentaslim?

Customers can order Phentaslim from the official Phentaslim website, and have a choice of several multi-buy purchase options that can make massive savings.

  • A single bottle of Phentaslim costs £39 ($69)
  • Two bottles costs £77 ($109)
  • and a “super value package” of four bottles costs £117 ($159).

In general, Phentaslim is a very cost-effective product.

Delivery is FREE on all orders (including international delivery).

Customers can securely pay either through Paypal, or on a Visa, Mastercard or American Express credit card. There is no auto-ship program or automatic repeat ordering, which we particularly like.

What About A Guarantee?

The manufacturers offer a 60 day money back guarantee on this supplement, which starts from the order date. This is valid for one opened bottle, and any additional bottles returned should be unopened.

Customers should obtain an RMA number from the company’s customer service department before sending the package, and should mark the RMA number clearly on the outside of the package.

Watchdog Verdict

Overall, we are very impressed with both Phentaslim and its manufacturer, Optimum Nutra Inc. The company clearly associate themselves with their own products on their official website, provide a company address, and follow high manufacturing standards for diet pills. They offer a 60 day money back guarantee; the returns policy is clear and easy to follow and all the information is available on the website. The claims the manufacturers make about the product are supported by references to clinical trials, and are not outrageous or ridiculous.

As for Phentaslim itself, it appears to have a solid ingredients profile, using appropriate dosages of the active ingredients. Numerous ingredients used in the product have strong clinical support, such as caffeine and green tea. The ingredients used also have a strong safety record.

The product has been around for quite a while and the number of positive reviews from happy customers that we found are very encouraging. The customer reviews also support the idea that if used properly and alongside a healthy diet and regular exercise, Phentaslim can help to accelerate the consumer’s rate of weight loss.

We Have no hesitation in making Phentaslim the number 1 choice for consumers and the editors top selection.

Watchdog Approved Diet Pills

Click here to Visit Phentaslim Official website!

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.



558 comments on “Phentaslim”

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  1. Robbie says:

    hi
    is this suitable for vegeterians?
    thanks :))

    1. Watchdog Staff says:

      Hi Robbie,
      Unfortunately not as the capsules looked to be made with gelatin. There are a few capsules that are vegetarian friendly but they are few and far between.
      Regards,
      Diet Pills Watchdog

      1. Savitri says:

        Is the gelatine from bovine sourced?

  2. Marla says:

    I cannot seem to order this product – it keeps saying my billing information is not matching my credit card information. I have tried two different credit cards. I am putting a different address for shipping. Is this not allowed. I am very excited to order this product but am having no luck

    1. Watchdog Staff says:

      Hi Marla,
      This is unfortunate we would get onto the merchant with this issue and they should be able to help you out.
      Regards,
      Diet Pills Watchdog.

    2. melody says:

      if your billing address is different from your mailing address that could be one reason for the problem. what ever address for your credit card is the billing address, and that needs to match before the company will accept it. you can usually put in a mailing address if you want the product shipped to an address that is different fm the billing address. just make sure the credit card you’re using the “billing” address is the same as where your credit company sends your bill to… hope this is helpful to you

  3. Melody says:

    One thing to note, the company that manufacture Phetaslim is set up only in 2011, and their website has limited information on the lab facility, premises etc. It leads me to thinking the lack of negative reviews about the product could partly be due to the fact that the product may be newly launched.

    The lack of ‘about me’ in the page is worrying, when visited at their website, many pages are not constructed yet.

    Would you be able to research deeper into the company?

    1. Watchdog Staff says:

      Hi Melody,
      We have contacted the company and asked for more information. Once we have this we will add to the review and post here.
      Regards,
      Diet Pills Watchdog Team.

  4. jessica says:

    can i buy this in the cayman ilands

  5. Jan says:

    Hi was just wondering if you have heard of phentramin-d, if you have do you have a review on it or any information that it works.

  6. Pooja says:

    Hi,
    I started phentaslim on 6th dec. not seen any weight loss yet. but i feel more energy. But since couple of days I am feeling dizziness and heavy head after consuming the medicine. the headache is quite a lot.

    1. Watchdog Staff says:

      Hi Pooja,
      Thanks for the feedback, we haven’t received any reports of this so far.
      If you have only been trying the supplement for a few days then weight loss may take awhile longer. Have you changed your lifestyle in anyway and are you taking the supplement as directed?
      This supplement is not filled with loads of stimulants so unless you’re particularly sensitive to caffeine you should be fine. However, if the symptoms persist we would suggest contacting the manufacturer for their recommendations.
      Let us know how you get on.
      Diet Pills Watchdog Team

      1. Jules says:

        Noticed lots of energy and 2 lbs the first week, not bad start! No symptoms apart from first day when took me longer to get to sleep. Maybe because I took last pill too late?

        1. Watchdog Staff says:

          Hi Jules,

          Thanks for letting us know your experiences, everything shared by real users can only be helpful to others.

          Good luck with the rest of your journey, and keep us updated.

          Diet Pills Watchdog Team

  7. Carrie says:

    I’ve got nothing but good things to say about Phentaslim so far. The order I made came really fast ans so far so good. I have more energy and have now started doing some nice walks every day with my Mum. Iordered a bottle eack for both of us cos its good to have someone to do these things together. The Holidays are coming but it might be small blip then carry on to the New year. Big thumbs up from me (an my mum) Carrie

  8. Liza says:

    Hi,
    I wanted to know how partial or unpartial your recommendation of this product is? Is “Phentaslim” giving you any money ( not you personally) or is it endorsing yourwebsite at all? Has this diet pill given you any incentavies or rewards to “approve it”; if so what were those incentives/rewards?

    1. Watchdog Staff says:

      Hi Liza,
      Fantastic question and one we are more than happy to answer. We provide answers to all those type of questions in our faq page. To clarify here though we are probably the most transparent diet pill review site online to date.
      On some of the products we approve we can earn a commission. This doesn’t affect our decision to approve the product as we look at each supplement on its own merits and completely objectively.
      We could earn a commission from virtually every product we review if we wanted to, in some cases we have even been contacted by dubious merchants to promote their wares.
      Our site is no different from a number of comparison sites that have become popular of late. Sites like ours need to be funded as they take many hours of considerable time and effort to provide meaningful, informative and useful content.
      Please remember that you can always go direct to any of the product sites we recommend. This way we wouldn’t receive a commission but hopefully you would still get a product worth buying.
      We hope this answers your question, if you would like more information then please contact us. 🙂
      Diet Pills Watchdog Team

      1. moe says:

        You made a huge mistake by rejecting Plexus Slim. Keep your eye on it.

  9. Jezza says:

    these guys have super support!

  10. Yjk says:

    Hi is it better than acai berry?

    1. Watchdog Staff says:

      Hi Yjk,
      Depends on what you’re looking for in a product. Phentaslim does include a superfruit in the form of Raspberry Ketones but is aimed at being a fat burner than a antioxidant weight loss product. If you are looking for an Acai Berry product then something like Acai Plus Extreme may be more suitable.
      Diet Pills Watchdog Team.

  11. Ruthless says:

    I’ve ordered this, as the shipping is less than 10 dollars and I’ll update on progress

    1. Watchdog Staff says:

      Hi Ruthless,
      We often find that shipping charges can add quite a lot to some diet pill prices and so look to include this information in our reviews now. We liked the fact that Phentaslim offers free shipping on 2 bottles or more and for the UK free shipping on all orders.
      Diet Pills Watchdog Team

  12. Mermaid says:

    Is this product approved by FDA?

    1. Watchdog Staff says:

      Hi Mermaid,
      The product is manufactured in GMP facilities that have been FDA inspected. Like most (if not all) dietary food supplements they do not require approval from the FDA as the ingredients don’t require a prescription.
      Kind regards,
      Diet Pills Watchdog Team

  13. James says:

    Has jitteriness or anxiety been reported as a side effect, a la phen375?

    1. Watchdog Staff says:

      Hi James,
      We haven’t received any reports from consumers suffering from side effects from taking this supplement. There isn’t too much caffeine in Phentaslim, around 100mg and some in the form of Guarana seed, which contains the slow release form.
      Diet Pills Watchdog Team.

      1. James says:

        Can you put a number on the amount from guarana? Surely not 100g!

        1. Watchdog Staff says:

          Hi James,
          Sure no problem, as outlined in the review, there is 100mg of Guarana Seed extract.
          Diet Pills Watchdog Team.

  14. Chris says:

    Can I order to Australia? no way to select when payment!

    1. Watchdog Staff says:

      Hi Chris,
      We raised this with the merchant who explained they did have this problem but that this has now been resolved. So any consumers from Australia can order Phentaslim without any problems.
      Diet Pills Watchdog Team.

      1. Peter says:

        Hi!

        What about Thailand? I have the same problem that it cannot be chosen in the pull-down menue in the order form.

        Thank you!

      2. paresh says:

        can we order this to India? As India is not appearing in order page??

    2. Wendy says:

      Hi Chris, do you end up trying the product? What is your verdict? Thanks, Wendy

  15. Dana says:

    How much weight can I lose with phentaslim?

    1. Watchdog Staff says:

      Hi Dana,
      Weight loss will vary from person to person and impossible to give exact figures for any supplement. Many of the ingredients in this supplement have been clinically proven to increase calorie expenditure, suppress appetite and to give sustained energy release. Adding a bit of exercise and eating well will boost results too!
      We wish you all the best with your weight loss journey.
      Diet Pills Watchdog Team.

    2. Jeff says:

      The weight loss really depends on your diet and exercise. The more stricter you are, the more loss you will notice.

      1. Laxmi says:

        Can I take this with my Lavothyroxine? Many thanks

        1. Mary says:

          Can I take this with my levothyroxine… Also had open heart surgery in Nov taking many pills also diabetic will it be safe

          1. diane says:

            SO sorry changed my mind that is all

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