FenApex/PhenApex Product Review

FenApex is a weight loss supplement that is also sold under the brand name PhenApex. While it’s marketed as “the number one alternative to Phentermine, it is important to remember that this is not a prescription weight loss product. Does this weight loss supplement live up to its claims? We investigate in this in-depth review.


FenApex and PhenApex are a dietary supplement intended to help you lose weight. According to the official website, this is accomplished through a proprietary formula that helps to boost your metabolism and suppress your appetite.

Who Makes PhenApex?

Researching FenApex proved to be problematic right from the start. The product is marketed under two different names: FenApex and PhenApex. In addition, different websites list the manufacturer under two different names: GS Labs and Sutra Health, with bottles being sold with either name on the label. It seems that the company was originally registered as GS Labs, but changed their name after several complaints were lodged with the Better Business Bureau regarding their product Phentarmine (an intentional misspelling of the prescription weight loss drug Phentermine). The manufacturer is based in Utah, and they do state that their products are made in a FDA certified facility which uses Good Manufacturing Practices.

How to Take PhenApex

Dosage instructions are not provided on the product’s official website. However, the product is sold in bottles of either 60 tablets or capsules. We assume this means that the product should be taken twice per day.


FenApexPhenApex-150x150 FenApex/PhenApex Product Review
FenApex PhenApex

We have a lot of concerns when it comes to the FenApex/PhenApex product. The fact that the same product is being sold under two different names and with two different manufacturer company names suggests there is something to hide here. The company obviously made a bad decision regarding the spelling and marketing of their Phentarmine product, but it doesn’t appear they have learned their lesson. For example, they are still marketing PhenApex as “the number one Phentermine alternative,” but they neglect to specify that this is not a prescription-strength product.

Our second concern is the fact that the company does not list the ingredients of the product anywhere on their website. This makes it impossible for potential customers to check to see whether there is anything they’re allergic to, or whether they’ll have any prescription drug interactions with this product. While we were able to eventually find an ingredient list for this product, this information should be readily available to the consumer.

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Third, it appears that there is a misleading guarantee badge on the product website. It clearly states that there is a 60-day money back guarantee on the badge. However, we were unable to find any information regarding a return policy on the product website. Furthermore, in the “terms of service” section of the product website, we found the following statement:

“You acknowledge that no guarantees have been made to you as to the results as there is no known product that gives 100% satisfaction to everyone, nor are there any guarantees against unfavorable results, risks or complications.”

This is extremely concerning. One area shows a money back guarantee, while another states there are no guarantees. While there is a phone number and email address listed for contacting the company on the website, we could find no return policy statement.

Finally – we could find no customer reviews for this product. The product website states that testimonials were paid for – which means there are no unbiased reviews available on the website. The product is not sold through Amazon, and while we could find FenApex for sale on eBay, we could find no reviews.


It took some digging to find an ingredient list for PhenApex. Eventually we did find a list through another reviewer. We have no way of knowing if this is the current formula for FenApex/PhenApex.

L Phenylalanine – this is an amino acid that is known to be a precursor to the neurotransmitter dopamine. As such, it is believed to help elevate mood, improve focus, and boost energy levels when taken correctly. However, it isn’t without unpleasant side effects. Some people may experience headaches, nausea, and hearburn when supplementing with phenylalanine. In addition, anyone who is taking antidepressants known as monoamine oxidase inhibitors or antipsychotic medications should not take supplements containing this ingredient.

Synephrine HCL – this is a powerful stimulant also knowns as “bitter orange.” It is used as a replacement for ephedrine in many dietary supplements, as it provides similar effects with less potency. However, like ephedrine, there are several negative side effects associated with this ingredient, such as headaches, increased/racing heartbeat, nervousness, anxiety, and insomnia.

L Carnitine – this is an amino acid that helps your body burn fat. It may also help your body regulate blood sugar levels more effectively. While usually safe when taken in small amounts, this ingredient can have a few unpleasant side effects, including nausea, heartburn, upset stomach, vomiting, and diarrhea.

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Taurine – taurine is an amino acid that is found in many energy drinks. It is believed to help improve cardiovascular function, giving your metabolism a boost. It may also help to boost your energy levels. While taurine is generally considered to be safe, some users may experience side effects such as diarrhea and upset stomach with this ingredient.

7 Keto (DHEA) – this ingredient is believed to help improve the body’s metabolism, increase thyroid activity, and improve muscle mass. This ingredient comes with a number of very unpleasant side effects, including sweating, headaches, fatigue, and irregular or fast heartbeat.


It is impossible to name any positives when there is so little information provided about the product from the manufacturer.


This product has several negatives, but the biggest is the lack of information available about the product. Any time a manufacturer refuses to provide an ingredient list for the product before purchase, it makes us nervous.

Customer Reviews

The only reviews that we could find for FenApex or PhenApex were the paid testimonials provided on the product’s official website. We do not consider these to be reliable sources of unbiased information.



Everything about this product sets off warning bells. It’s marketed under multiple name spellings and with multiple manufacturer names, which is misleading. There is no clear return policy outlined on the website, in spite of a badge stating there is a 60-day money back guarantee. There is no ingredient list provided before purchase. The testimonials available on the product website are paid for. All of these factors combine to make us very leery of trying or recommending this product.

  • Web MD - Phentermine Oral : Uses, Side Effects, Interactions, Pictures, Warnings and Dosing - WebMD.
  • Drugs.com - Phentermine: Drug Uses, Dosage and Side Effects - Drugs.com.
  • Mayoclinic.org - Phentermine for weight loss - Mayo Clinic.
  • MedinePlus.gov- Phentermine: MedlinePlus Drug Information
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  • MedicineNet.com - Phentermine Weight Loss Drug Side Effects, Dosage, Safety & Alcohol Effects.
  • RXList.com - Phentermine (phentermine hydrochloride): Side Effects, Dosages, Treatment, Interactions, Warnings
  • EverydayHealth.com - Phentermine Reviews - Everyday Health
  • HealthLine.com - Phentermine - Side Effects, Dosage, Uses, and More.
2000px-5-stars-svg-orig_2_orig FenApex/PhenApex Product Review PhenApex
5 stars - "These pills worked so much better than I was expecting. As instructed, I took one in the morning an hour before breakfast and then one again before lunch. But the pills worked so well, I think I really only needed half. I was surprised at the amount of energy they gave me. And they made me so productive. I have been really tired and sluggish lately, so I was hoping this product would give me an extra boost. And it certainly did. After I took the pills in the morning, I could not even think about breakfast. I was just so content to work for hours, with no breaks in between. (And that is not usual for me.) The first couple of days, I really didn't want breakfast, but I forced myself to eat a small one. And I didn't get around to it until around noon because I wasn't hungry at all. Another good thing about this product was that it put me in such a good mood. I wasn't expecting that. I thoroughly enjoyed my increased production levels and high energy levels. I got so much work done that I needed to do, late into the night, without even noticing the time. I took one pill twice a day and they completely took away my appetite so that I didn't want anything all day. I will probably reduce that amount going forward to just half at a time so that I don't want to skip dinner entirely. This was one of the best energy boosters that I've ever had. And I've tried many over the years. And I didn't even think about food all day. I've been using the product for about 4 months now and really wanted to wait to do a review, but it has just worked so well in such a short amount of time that I wanted to go ahead and recommend it. In 4 months I have already lost so much weight (look at my photos) and at this rate, it shouldn't take anyone long to meet their weight loss goals. I have recommended it to friends and family. If you want energy, a good mood, and to not even think about food all day long, you should definitely try Phenobestin." Based on 300,794 Votes since 2017!

(Last Updated On: 10th April 2021)

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