Phentamine HCL 37.5 Review

Advertised as a pharmaceutical strength appetite suppressor and metabolism booster Phentamine HCL looks the part. It is trying to capture a slice of the phentermine alternative market with its appearance but it’s formula does rather let it down a touch.

Phentamine 375.5

Some good ingredients in the formula
May trigger thermogenesis
Could provide and energy boost
Made by a reputable company

May cause some side effects
Not a unique formula
Customer reviews are mixed
Other weight loss pill are preferred

The formula and included ingredients in Phentamine HCL 37.5 could help some people lose when when used in tandem with diet and exercise.

However, the amount of stimulants the pills contain will make them an unsuitable option for people who do not tolerate stimulants well. Other products can offer similar or better results without the same risk of negative issues.

We have a guide to Weight Loss Pills where we list the most effective brands on the market

What is Phentamine HCL 37.5

What does it do:  Phentamine HCL 37.5  is advertised as aPharmaceutical Grade OTC Weight Loss Diet Pill that [according to it’s makers] can help it’s users lose 25lbs a month.

Pros: Contains Glucomannan which is one of the most effective appetite suppressing ingredients but…

Cons: It’s Glucomannan is much too low. Weight loss claims are a tad optimistic.

Phentamine HCL 37.5 is a “Pharmaceutical Grade OTC Weight Loss Diet Pill” with a name that has obviously been chosen to attract the attention of dieters searching for a way to buy the prescription drug Phentermine.

Customers are promised a weight loss of up to 25 pounds per month, but the people marketing the pills point out doctor-approved exercise and a reduced-calorie diet will be required.

The pills are a copy-cat in more ways than one. Not only do they have a name that mimics that of the prescription-only diet pill, they have the exact same formulation of ingredients as several other products including Ultimate Burn and Skinny Minnies Boost & Burn. It’s a white label product, the name on the bottle may vary, but the pills remain the same.

What Are The Advertised Benefits

  • Maximum strength formulation
  • Provides appetite suppression
  • Thermo & lipogenic formula
  • Advanced energy provider and metabolism booster
Phentamine HCL ingredient label
Contains Phenylethylamine HCL

Key Ingredients & Blend Potential

Phentamine HCL 37.5 contains three proprietary blends:

Energy and Focus Blend (450mg)

  • Caffeine: A stimulant that is good for upping energy levels and is renowned for its ability to improve concentration and focus. Caffeine is also a proven fat burner. [source]
  • Phenylethylamine HCL: An ingredient that may deliver a short term energy boost and improved mental focus.
  • Glucomannan: One of the best appetite suppressing ingredients in the world, but it is hindered here by a low inclusion rate. Medical experts have stated three 1000 mg doses are required each day. Phentamine could not possibly provide a fraction of this amount and only one pill is taken each day.
  • Fursultiamine: An ingredient derived from thiamine. It is believed to possess energy boosting abilities, but further study is needed.
  • L-Tyrosine: High doses of L-Tyrosine can be effective for improving mental focus, but the amount included here may not be enough.

Thermogenesis Blend (40mg)

  • Green Tea Extract: Researchers in Europe have proven green tea’s ability to boost the metabolism, increase energy expenditure, and encourage fat burning.
  • Raspberry Ketones: A study conducted by researchers in Korea shows supplementation with raspberry ketones can increase lipolysis and fatty acid oxidation.
  • Yohimbe: A study involving a group of football players suggests supplementation with yohimbe may improve fat loss in “elite athletes”.

Lipogenic Blend (7mg)

  • L-Carnitine: A study conducted in Italy supports the claims made for L-Carnitine’s ability to boost fat burning and also shows it has the ability to delay the onset of fatigue.
  • Synephrine HCL: A powerful stimulant that can speedup the metabolism and encourage the burning of fat.
  • Kola Nut: A fruit extract that is high in caffeine.

How to Use Phentamine HCL 37.5

One capsule each morning is all that is required. Supplementation must be ceased after 8 weeks, but can be resumed a fortnight later.

Phentamine HCL is a weight loss supplement that has been on the market for over 10 years. It is a proprietary blend of natural ingredients and it helps to reduce appetite, curb cravings, and boost metabolism. Some customer reviews were recently published stating that they followed the directions precisely but did not lose any weight with Phentamine HCLs use. They claimed they would not recommend this product as well as have no intention of buying it again. The reviewers want those looking to buy Phentamine HCL to know that they didn’t find success with this product or its ability to help them shed unwanted inches from there waistline.

Phentamine HCL 37.5 Customer Testimonials

The amount of bad reviews slightly outnumber the good.

A few reviews by satisfied customers read:

These pills have helped me so much. My energy levels are up and my dress size is down so I’m feeling pretty happy these days. Excellent product. It works just like the prescription stuff and is very reasonably priced.

I have been struggling with my weight for a while now, and nothing seemed to work. I am the kind of person who has always been active and would eat healthy, but couldn’t shake this extra 5 lbs that just wouldn’t go away no matter what I did. A friend of mine recommended Phentamine HCL to me, so I decided to give it a try. After only two weeks of use, not only did the pounds start melting off again, but it also helped me get back into shape! The best part was that there were no side effects or anything like that from taking this diet pill. It really is one of the best decisions I’ve ever made for myself in terms of health and fitness.

Phentamine HCL really did work for me! I am a very busy person, and getting to the gym is not easy. But with Phentamine HCL, I would get up in the morning and do some cardio on my living room floor before going to work. By lunchtime, I was always so hungry that it wasn’t hard at all to stick to eating only 1200 calories per day due to how quickly this diet pill made me lose weight. When I started taking this product six months ago, my BMI was 28. It’s now 24! What an amazing change in just 6 months of using Phentamine HCL-I can’t imagine what one year will bring if Phentamine continues working like it has been

A couple of reviews placed by dissatisfied customers read:

These pills gave me a strange feeling in my heart. It was quite scary and I didn’t have the guts to risk a second dose. I think I’m going to need a refund because these pills don’t work. All they do is make me feel sick and dizzy.

Hey, I just wanted to write a comment on Phentamine weight loss pills. It didn’t work for me and I didn’t lose any weight. The first week it seemed like everything was going well but then the second week my appetite increased and it didn’t suppress my appetite anymore. And then after that, I started getting side effects of anxiety where I couldn’t sleep well at night or do anything else during the day because all I would think about is how hungry or tired that made me feel.

It is also worth noting the people distributing the pills have done such a good job of making them sound like Phentermine, a number of people have left five star reviews for the prescription drug because they have used it in the past.

These people have not purchased Phentamine and do not realize it is not what they think it is.

One example reads:

Love these pills. My doctor prescribed them to me years ago and I lost over 20lbs. You needed a prescription back then. I had no idea you can get them from Amazon now.

Phentamine HCL 37.5 Side Effects

Phentamine is unsuitable for people under 18 years of age. It is also likely to be an unsafe option for women who are pregnant or nursing a child, but the people marketing the product fail to make this clear. Anyone suffering from a medical condition should consult a doctor before using the product. People who are using medication will need to show a similar degree of caution.

Where to Buy Phentamine HCL 37.5

Phentamine is can be purchased from Amazon, but it was unavailable at the time of this review.


A 90-day money back guarantee is provided.

The Verdict

The formulation of ingredients used in Phentamine HCL 37.5 should be capable of supporting weight loss when the pills are used in conjunction with diet and exercise, but the amount of stimulants the pills contain will make them an unsuitable option for people who do not tolerate stimulants well.

Other diet products can offer similar or better results without the same risk of negative issues.

Highly Recommended Alternative

There are many diet pills that are advertised as an alternative to Phentamine – it is only PhenQ that has managed to not only pull it off but surpass it.

PhenQ is a true combination of pharmacy grade and natural weight loss ingredients – it is suitable for just about anyone and everyone who want to lose weight.

About Steve Calvert

Steve Calvert (CPD Certified in Nutrition for Weight Loss) Steve is an experienced writer and researcher with a wealth of knowledge and expertise in the fitness, nutrition and weight loss sector. He has a background in bodybuilding and the martial arts and continues to use a combination of exercise and healthy eating to stay in shape. Steve has reviewed hundreds of supplements since 2012. He is very accurate and methodical in his approach and understand the importance using correctly dosed ingredients. LinkedIn