The FDA has very little control over the supplements market, unless an ingredient is proven to be very dangerous, such as the stimulant DMAA, which was banned in 2013. Fastin still contains DMAA, despite numerous clashes with the FDA, including the confiscation of millions of dollars’ worth of stock.

Below we take an in-depth look at Fastin to see whether or not this is an effective and safe weight loss aid.

Fastin Pros

  • None

Fastin Cons

  • Manufacturers have had numerous clashes with FDA
  • Contains numerous stimulants
  • Contains a banned substance- DMAA
  • Very long list of potential side effects
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What You Need To Know About Fastin

There are numerous different Fastin products, including Fastin XR (extended release), Fastin Rapid Release, and Fastin Multi-Vite For Her. In this review we are only focusing upon the original Fastin supplement. Fastin contains numerous stimulant ingredients, making it a strong supplement that could be very effective at aiding weight loss, but also potentially very dangerous, especially considering the use of the banned substance DMAA, in combination with numerous stimulant ingredients.

What Are The Side Effects Of Fastin?

The list of potential side effects that could be caused by consuming Fastin is extensive, due to the inclusion of numerous stimulant ingredients, including a banned substance, DMAA.

1, 3-Dimethylamylamine (DMAA) significantly increases blood pressure and heart rate, as well as being linked with causing stroke, heart attack and death, even in previously healthy people. Other side effects may include shortness of breath and tightening in the chest, seizures, neurological problems and psychiatric problems.

A more detailed list of the side effects that could be caused by the ingredients found in Fastin can be found below in the Side Effects section.

How Much Does Fastin Cost?

The prices of Fastin vary hugely, especially as there are two different sizes of bottle, a 30 capsule bottle and a 60 capsule bottle. The average price of a bottle of capsules appears to be between $45 and $50, plus delivery charges, but the product is more expensive from the official website.

Consumers are instructed to take up to three tablets per day, and so a bottle of 30 capsules could last as little as 10 days of use, and a bottle of 60 capsules could last for as little as 20 days of use. This makes Fastin more expensive to use in the long term.

Our Verdict On Fastin

The use of DMAA, which is a banned and dangerous substance, in Fastin is a huge red flag- because of this single ingredient, we automatically dislike Fastin as a potential weight loss supplement. If the inclusion of the banned ingredient DMAA wasn’t bad enough, the other ingredients are also far from ideal. The majority of the ingredients are stimulants, including synephrine and yohimbe, which can both cause a range of unpleasant side effects. The manufacturers have also used an ingredient called N-Methyl-B-Phenylethylamine HCI; there is no clinical research available on this supplement, no established safety record, and no indication that it is suitable for use as a weight loss aid.

The official manufacturers completely disregard the safety and health of their customers, and disregard the ban on DMAA. This, combined with their long history of clashes with the FDA over their ingredient choices, and the arrest of the President of the company, all show that Hi-Tech Pharmaceuticals are not to be trusted, and should probably be avoided in general.

There is no money back guarantee for the product, and the manufacturers have failed to make their returns policy clear on their official website. The product is expensive, especially over long term use, as a large bottle will last for as little as 20 days of use.

Overall, we do not recommend Fastin to our readers.

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Fastin Review

Fastin is a stimulant based weight loss aid that supposedly works to aid weight loss by boosting the metabolism, increasing energy levels and suppress the consumer’s appetite.

It is manufactured and sold by a company called Hi-Tech Pharmaceuticals. The company are based in Georgia, USA, and can be contacted using the information on their official website.

Fastin Facts

  • Manufactured by Hi-Tech Pharmaceuticals Inc.
  • Choice of 30 or 60 capsules per bottle
  • Contains DMAA- a banned substance

Hi-Tech Pharmaceutical have a long history of using controversial and illegal ingredients in their supplements, as well as fighting with the FDA over the use of these ingredients.

In 2013, with the aid of US Marshalls, the FDA seized $2 million in supplements from Hi-Tech that contained the controversial and now banned stimulant ingredient DMAA. Confiscated products included their stock of Fastin, but also included numerous other supplements.

Hi-Tech Pharmaceuticals are currently suing the FDA, claiming that DMAA was never actually banned as a supplement ingredient, and that the confiscation of these goods was unlawful.

The company were contacted again in 2015 by the FDA, being warned about the illegal use of an ingredient called R-Beta-Methylphenethylamine which was used in several of their products, including Fastin XR and Fastin Rapid Release (but not the Fastin Formula reviewed here).

If this was not enough evidence to remove all faith in this company, the president of the company, Jared Wheat, has previously served federal prison time in 2009 for ‘conspiracy to commit wire and mail fraud, and introduction of unapproved new and adulterated drugs into interstate commerce’.

How to Take Fastin

Take 1-2 tablets in the morning and 1 tablet after lunch. Do not exceed 4 tablets per day.
Do not take Fastin in the evening, as it could interfere with your sleeping schedule and cause insomnia.

One customer review complained that 1, 3-Dimethyamylamine (DMAA) is no longer in the product after a reformulation. At first glance this does appear to be true, as it is not listed on the official sales website as an ingredient, with another product with a very similar name, 1, 3-Dimethylamine being listed instead. This is not the same ingredient, but is still a very controversial ingredient, which has no known health benefits, and is used in industrial processes, primarily in the process of vulcanizing rubber. However, our research indicates that this is a spelling mistake, either through carelessness or to mislead the FDA, and that the product does still contain DMAA. A1 Supplements, one of the third party retailers that sells Fastin, lists DMAA on the ingredients list instead of 1, 3-Dimethylamine. The quantity used is unknown, as the supplement consists of a proprietary formula.

Fastin Concerns:

  • Contains numerous stimulants
  • Contains a banned substance- DMAA
  • Very long list of potential side effects

DMAA is a dangerous supplement that has been linked with serious side effects including significantly increased blood pressure, heart attacks, stroke, and even death. It is classed as an unlicensed medicinal product (meaning that it is illegal to use it in supplements) in numerous countries, including the USA, UK, Australia, Canada, New Zealand, Brazil and Sweden.

The World Anti-Doping Association (WADA) have listed DMAA as a banned substance, as have many other sporting bodies, and any competitive athlete who is found to have it in their system could be suspended, banned, fined or even stripped of their medals.

What Does Fastin Claim To Do?

The manufacturers provide the following description of Fastin and its benefits:

Fastin is a stimulant. More specifically, it is an appetite suppressant that affects the central nervous system by reducing feelings of hunger and increasing a person’s overall mood.

Fastin is intended for use with diet and exercise by individuals interested in losing weight and/or fat, or by individuals who have risk factors associated with too much weight such as high blood pressure, high cholesterol, or diabetes who want to lose some of their fat/weight.

Fastin is a stimulant that causes the following effects when taken:

  • Increases metabolic rate, which promotes the burning of stored body fat (thermogenesis)
  • Increases the release of Norepinephrine and Dopamine for significant Weight and fat Loss
  • Increases energy without the jittery feeling of traditional diet pills

Does Fastin Work?

With a huge list of various stimulant ingredients being used in Fastin (some of which are derived from Amphetamines), the product does appear to be a high strength weight loss aid. The stimulant ingredients boost the consumer’s metabolic rate, burning more calories and boosting energy levels, and some of the ingredients could also suppress the consumer’s appetite, again helping them to lose weight. There is an incredibly unusual ingredient, N-Methyl-B-Phenylethylamine HCI, which we have not seen in any other weight loss aid before- there is no available information on what this ingredient is supposed to do, how it affects the body, or even if it is safe to use.

However, the ingredients carry a huge risk of serious side effects, and so it is definitely not worth using this supplement just to lose some weight, when the long term health implications could be far worse. The weight loss results are not worth the high risk of dangerous side effects.

What Are The Ingredients of Fastin?

The ingredients used in Fastin are detailed below. The ingredient quantities listed are per single capsule serving. The product uses a proprietary formula and so individual ingredient quantities are not provided, other than the dose of caffeine.

Proprietary Blend with Thermo Rx 245 mg

  • Phenylethylamine HCI: More commonly known as PEA, this ingredient is derived from the amino acid phenylalanine. It is thought to increase alertness, aid in concentration and focus, and may also enhance mood, which are all arguably traits that dieters need help with in succeeding with their weight loss attempts.
  • Methylsynephrine HCI
  • Theobromine Anhydrous: Theobromine is a mild stimulant. Thought to be a much milder stimulant than caffeine, and is unlikely to have any significant impact upon weight loss.
  • 1, 3-Dimethylamylamine HCI: More commonly referred to as DMAA, this lab-created ingredient appears to be derived from amphetamines. It acts as a stimulant, increasing energy levels, and aiding weight loss, but there is a lack of human studies into how it works and how effective it is at aiding weight loss- the majority of its support comes from anecdotal reports from consumers. Once hugely popular, especially amongst bodybuilders and consumers of extremely strong diet pills, it has become much more difficult to source as the FDA has made continued efforts to remove it from the market and banning its distribution, with millions of dollars’ worth of supplements destroyed by numerous companies. As we discuss in more detail in the side effects section, it causes a wide variety of unpleasant and dangerous side effects.
  • Synephrine HCI: A review of numerous studies concluded that use of synephrine resulted in an increase to the participants resting metabolic rate and energy expenditure, and moderate weight loss was seen in studies lasting over 6 weeks. However, there are some concerns about its safety being under-researched and the numerous side effects that have been associated with it.
  • N-Methyl-B-Phenylethylamine HCI: We struggled to find any detailed information about N-Methyl-B-Phenylethylamine, other than the fact that it does exist- it has been briefly referred to in some Chemistry Journals. The name suggests that it is derived from, or very similar to, Amphetamines. Hi-Tech Pharma can be lax with the accuracy of spellings on their “Supplement Facts” boxes, and so the ingredient could be the very similarly named N-Methyl-Beta-Methylphenylethylamine, also known as N-Methylphenethylamine (NMPEA); this is a pressor, which will increase blood pressure, and may act as a stimulant.
  • Yohimbine HCI: Some studies have noticed increased blood concentrations of free fatty acids in participants who use yohimbe extract, suggesting increased rates of lipolysis. However, the Natural Medicines Comprehensive Database has stated that there is insufficient evidence to claim it aids in weight loss.

Does Fastin Have Any Side Effects?

There are numerous ingredients found in Fastin that can cause a range of unpleasant and even dangerous side effects. What is most worrying is that no individual ingredient quantities are listed, other than caffeine, which is one of the safer ingredients in this supplement. Without knowing the individual ingredient quantities, it is impossible to establish how effective the supplement is at aiding weight loss, or the likelihood of any side effects occurring.

1, 3-Dimethylamylamine significantly increases blood pressure and heart rate, as well as being linked with causing stroke, heart attack and death, even in previously healthy people. Other side effects may include shortness of breath and tightening in the chest, seizures, neurological problems and psychiatric problems. More information about the product, and the FDA’s ban upon it, can be found here:

Synephrine is a stimulant found in bitter orange peel. Side effects associated with the use of Bitter Orange extracts including synephrine include increased heart rate and increased blood pressure, heart palpitations, fainting, and even heart attack and stroke in healthy patients. The Mayo Clinic has recommended avoiding use of synephrine and other Bitter Orange extracts because in their opinion, the risk of using the product is not worth the pay-off of any potential weight loss. The effects of synephrine and other bitter orange extracts are enhanced when combined with caffeine.

Side effects of caffeine can include headaches, increased heart rate, increased blood pressure, heart palpitations, increased urination, dehydration, jitteriness, dizziness and insomnia. Theobromine is a stimulant that is incredibly similar to caffeine, but much milder- it could potentially cause the same side effects as caffeine.

Yohimbe can cause a wide range of side effects, including stomach upset, excitation, tremor, sleep problems, anxiety or agitation, high blood pressure, a racing heartbeat, dizziness, stomach problems, drooling, sinus pain, irritability, headache, frequent urination, bloating, rash, nausea, and vomiting. High doses can cause more severe effects.

Worryingly, there is very little information available about N-Methyl-B-Phenylethylamine HCI and we were unable to locate any information about its safety as a supplement. Its name suggests that it is similar to amphetamines, and it could be a stimulant that increases blood pressure. However, in practice, it could potentially cause any number of serious side effects, and we have no evidence to show that these side effects could be, and no evidence to prove that it is safe.

Not for use by individuals under the age of 18 years. Do not use if you are pregnant or nursing. Individuals who consume caffeine with this product may experience serious adverse health effects. Individuals who are sensitive to the effects of caffeine should consult a licensed health care professional before consuming this product. In case of accidental overdose, seek professional assistance or contact a poison control center immediately. Avoid alcohol while taking this product. Do not exceed recommended serving. Exceeding recommended serving may cause serious adverse health effects, including heart attack and stroke. Discontinue use and call a physician or licensed qualified health care professional immediately if you experience rapid heart beat, dizziness, severe headache, shortness of breath, or other similar symptoms, improper use of this product may be hazardous to a person’s health. Exceeding recommended serving will not improve results.
Do not take Fastin with any other diet supplements or medications before getting approval from your physician. Do not combine Fastin with other phenethylamines including phentermine, fenfluramine, amphetamine, cathinone and the synthetic drug dextroamphetamine and methylphenidate or other substituted phenethylamines. Do not take Fastin if you have used an MAO inhibitor such as isocarboxazid (Marplan), selegiline (Eldepryl, Emsam), phenelzine (Nardil), rasagiline (Azilect) or tranylcypromine (Parnate) within the past 14 days. Do not take more than the recommended dosage of Fastin.

Are There Any Customer Reviews For Fastin?

We have found numerous customer reviews for Fastin, some of which we have featured below. One issue we found when looking for customer reviews is that there used to be a branded prescription appetite suppressant also called Fastin, which contained phentermine HCl- it appears that many people have confused the two products, both when leaving reviews and when discussing the products on forums trying to source some. The two products are completely unrelated.

I love Fastin. It works as well as phentermine did but without that gross taste in your mouth for the rest of the day. So bummed I can’t get it right now. Please get it back in stock!

I just started taking this again, the first time I took it I went from a size 12 to a size 5/6. I was ecstatic. Then the formula changed and did nothing but make my heart race and feel sick. When I found the website with the original formula I am excited to see if it works again. After a month I’ll review again. Just started taking it and so far no racing heart or feeling sick, yay!!!!

I have 30 pounds to lose and I lost 13 pounds in 2 weeks so far. I started with a three day lemon juice fast and one Fastin. Now I have a light breakfast, peppermint tea all day with one Fastin and dinner of boiled chicken and salad or veg. soup. It does not make you jittery but I find that I talk ALOT and have energy. It also doesn’t keep me up at night. It also curbs my appetite that I rarely look for a snack.

I bought mine last night otc at a local store. I read many reviews on the product. I took a half of one this am and my heart is racing no noticeable energy but I’m feeling like I’ll be thrown into a panic attack. Not suse what to think.

I just bought a bottle this afternoon. I took one after lunch, and was shaking so bad and jittery. I haven’t been hungry or thirsty. I need to lose about 50lbs. I will try 1/2 tab in the am, and 1/2 at lunch tomorrow. I need to motivation and energy to work out.

I have been taking this product for 5 days and I have had increased energy as well as decrease appetite I have to force myself to eat even one meal a day. I only take one in the morning and one at lunch. this morning I had major issues i think it was dangerously low blood sugar as I have only been eating 1 healthy choice meal a day. I was down for most of the day I did not take the second pill and I will for now on eat a protien bar, egg, fruit or oatmeal before I take the pill in the morning. I have on the plus side lost 10 lbs so far but at what cost? I was freaked out this morning and so worried I was going to go into cardiac arrest. Force yourself to eat protien and veggies through out the day.

This stuff does jack you up. I’m used to drinking about six diet sodas per day, but this is unbelievable (and not necessarily a good thing.) I’m shaking like a leaf and nauseated unbelievably.

The review below was written in 2015. Fastin does currently contain 1, 3-dimethylamylamine HCL, more commonly known as DMAA, although it is possible that the ingredient was removed for a few months following the company’s first dealings with the FDA.

One star: Product no longer contains 1.3 dimethylamylamine HCL. Key ingredient was removed about a year ago.

Does Fastin Offer a Money-Back Guarantee?

We could not find a money back guarantee on Hi Tech Pharmaceuticals’ official website. We also struggled to locate their actual returns policy. Customers wanting a return should contact the company before sending any items back for a refund.

The returns policies of third party retailers may vary.

Where Can I Buy Fastin?

Fastin is available both from the manufacturer’s official website and from several third party online retailers.

From the Hi Tech Pharma website, a bottle containing 30 capsules costs $39.99 plus delivery charges, whilst a bottle containing 60 capsules costs $69.99 plus delivery charges.

A1 Supplements only sell the 60 capsule size, charging $44.95 plus delivery charges per bottle.

There is a website called that offers bulk discounts on purchases. A single bottle containing 60 capsules costs $49.95, with free shipping. Two bottles cost $47.95 each ($95.90 total), whilst an order of three bottles cost $44.95 each ($134.85 total).

i-Supplements charges $44.99 per bottle of 60 capsules, plus delivery charges.

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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.

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