Stallion’s Review of SizeGenix with Ingredients and Side Effects


sizegenix bottles

sizegenx single bottle

Product name: SizeGenix
Producing company: Incredible Health Decisions, LLC
Price per bottle: $39.95
Official website:
3rd party offers: Amazon (see here), GNC (not available)
Alternative products: Male Extra, VigRX & ProSolution

Not the best option on the market, nor the worst one. SizeGenix has its pros as well as cons. This is what you have to know.

From what I was able to learn during last few years (researching various ways of penis enlargement) when you want a bigger size, you have usually four options available:

  1. Extenders
  2. Hydro-based pumps
  3. Manual exercises
  4. Pills

The best approach is to combine all four of these. However, the right supplement can make a real difference in your efforts.

However, the question is:

Is SizeGenix the best option you can use that will help you to get bigger?

The porn stars such as Ron Jeremy and Jenna Jameson will tell you: yes. However, we all know that celebrity endorsement is not always the best way to measure the effectiveness of individual products.

Therefore, I am going to provide you with my personal opinion on this product, provide you with different user feedback I was able to discover on the internet and a comparison to other male enhancement brands I know are good.

You can read all about the best products for men in 2017 via this comprehensive guide: Top 5 Male Enhancement Pills on the Market




man with erection issues

Specially formulated, the real magic behind SizeGenix is in ingredients this supplement includes (more on that soon). But on a scientific level, this product works by:

  • Entering the chamber of your penis
  • Releasing testosterone into your two penile chambers
  • Saturating the penis tissue

What this does is cause the capillaries in the penis to expand along with the chambers. As this process occurs, you’ll notice that your erection has now improved.

The creators of this product state that most of the changes will be experienced between 47 and 77 days of usage. So do not expect immediate results.


patent for sizegenix small transparent

As stated on the official product website, SizeGenix® is unique in the fact that it is protected by a U.S. Patent number 6,673,377.

Sadly, no pills will increase your size on their own. Usually, you need to follow a complex routine that includes several penis enlargement exercises as well. Only that way you can expect permanent gains.



ingredients in various vials

I bet you are interested in the ingredients that are used in this product. Well, SizeGenix boasts that its main power lies in six premium substances (Butea Superba, Tonkat Ali, Tribulus Terrestris, L-Carnitine, Long Pepper & L-Arginine).

All you have to do is to take 2 pills a day (ideally in the morning or late evening) on an empty stomach. You can learn more about each ingredient in the sections below.

What I always recommend is to do your own research on these ingredients as well as I am no scientific expert so do not rely solely on my interpretation of research done on individual ingredients.

WARNING: The official company states just the amount of their proprietary blend and not the precise volumes of individual substances used in it (last checked April, 2017).


Niacin, also known as vitamin B3, helps men to increase blood flow into the penis by relaxing your blood vessels leading to a much better erection. The best part? Niacin will help you to reduce fatigue as well (vitamin B does that pretty effectively). (Read more here)


“Niacin alone can improve the erectile function in patients suffering from moderate to severe ED [erectile dysfunction] and dyslipidemia.“

Ng, C.F., et al. (2011). “Effect of niacin on erectile function in men suffering erectile dysfunction and dyslipidemina“, in The Journal of Sexual Medicine. Vol. 8(10). Pp. 2883-93.


This substance helps increase performance and has been shown to help with erectile dysfunction. The phytoandrogens found in such high supply within the herb mimic male hormones, which gives men faster recovery times, increased muscle tone, strength, and energy. (Read more here)

“The ethanol extract of B. superba is effective in enhancing penile erection. The ethanol extract increased intracavernous pressure (ICP) in vivo. It also significantly enhanced the effects of cGMP and isobutylmethylxanthine. This suggests that B. superba may act through cAMP/cGMP pathways.“

Chauhan, N.S., et al. (2014). “A Review on Plants Used for Improvement of Sexual Performance and Virility“, in BioMed Research International.

“There was a significant upgrading in 4 of the 5 descriptive evaluations of the IIEF-5 questionnaire. Estimation of the sexual record indicated that 82.4% of the patients exhibited noticeable improvement. Haematology and blood chemistry analysis revealed no apparent change. The plant preparation appears to improve the erectile function in ED patients without apparent toxicity.”

Cherdshewasart, W., & Nimsakul, N. (2003). “Clinical trial of Butea superba, an alternative herbal treatment for erectile dysfunction“, in Asian Journal of Andrology. Vol. 5(3). Pp. 243-6.


A substance that increases free testosterone levels in the body. On the sexual side of things, tribulus does appear to be a relatively reliable and potent libido enhancer in rats and the lone human study assessing this has confirmed an increase in sexual well being and erectile function. (Read more here)

“A dose-dependent improvement in sexual behavior was observed with the LAET treatment as characterized by an increase in mount frequency, intromission frequency, and penile erection index, as well as a decrease in mount latency, intromission latency, and ejaculatory latency. The enhancement of sexual behavior was more prominent on chronic administration of LAET. Chronic administration of LAET produced a significant increase in serum testosterone levels with no significant effect on the sperm count. No overt body system dysfunctions were observed in 28-day oral toxicity study.“

Surender, S., et al. (2012). “Evaluation of the aphrodisiac activity of Tribulus terrestris Linn. in sexually sluggish male albino rats“, in Journal of Pharmacology & Pharmacotherapeutics. Vol. 3(1). Pp. 43–47.

“The weight gain and improvement in sexual behavior parameters observed in rats could be secondary to the androgen increasing property of TT (PTN) that was observed in our earlier study on primates. The increase in ICP which confirms the proerectile aphrodisiac property of TT could possibly be the result of an increase in androgen and subsequent release of nitric oxide from the nerve endings innervating the corpus cavernosum.”

Gauthaman, K., et al. (2003). “Sexual effects of puncturevine (Tribulus terrestris) extract (protodioscin): an evaluation using a rat model“, in Journal of Alternative and Complementary Medicine. Vol. 9(2). Pp. 257-65.


Utilized to create nitric oxide, which enhances blood vessels and allows for improved blood flow. This ingredient also helps the body release insulin and growth hormone. L-Arginine has been shown to improve blood flow to the genital area by dilating blood vessels and helping the penis to enlarge to its full capacity, thus increasing the size, hardness, and frequency of erections. (Read more here)

“30 patients (94%) completed the whole treatment schedule. Five (17%) patients reported a significant improvement in erectile function at the end of the L-arginine phase and 6 (20%) patients after the placebo period. 17 (56%) patients showed little improvement with L-arginine and 13 (43%) with placebo. In 8 patients (27%) of the verum group there was either no change in the ED score or even a slight worsening.“

Klotz, T., et al. (1999). “Effectiveness of oral L-arginine in first-line treatment of erectile dysfunction in a controlled crossover study“, in Urologia Internationalis. Vol. 63(4). Pp. 220-3.

“Nine of 29 (31%) patients taking L-arginine and two of 17 controls reported a significant subjective improvement in sexual function. All objective variables assessed remained unchanged. All nine patients treated with L-arginine and who had subjectively improved sexual performance had had an initially low urinary NOx, and this level had doubled at the end of the study.


According to some Ayurvedic websites such as “Ayur Help”, the Vitis Vinifera, also known as grapes, helps to increase the fertility of men and women. It increases quality and quantity of semen, sperm count, and sperm motility. However, I was not able to find supporting evidence in research studies.

“We found that GJ reduces body weight difference, was associated with decreased sperm motility and count in all treatment groups (p≤0.05 and p≤0.001, respectively). Moreover, DSP was significantly decreased in all treatment groups compared to the control group (p≤0.05), except in the group receiving 100 mg/kg of GJ. Inhibin B levels were significantly decreased in all treatment groups (p≤0.05).“

Afzalzadeh, M. R., et al. (2015). “The Effect of Vitis vinifera L. Juice on Serum Levels of Inhibin B, Sperm Count in Adult Male Rats“, in The World Journal of Men´s Health. Vol. 33(2). Pp. 109–116.


Sadly, I was not able to discover any information on this substance. I have no idea how it relates to male sexual improvement. If you know how it works, please leave a comment in the section at the end of this article.



According to the website “Health Line”, L-citrulline is an amino acid normally made by the body. The body converts L-citrulline to L-arginine, another type of amino acid. L-arginine improves blood flow by creating nitric oxide (NO), a gas that helps widen blood vessels. However, the research to support the use of L-citrulline as an ED treatment is limited but promising. (Read more here)

“Although less effective than phosphodiesterase type-5 enzyme inhibitors, at least in the short term, L-citrulline supplementation has been proved to be safe and psychologically well accepted by patients. Its role as an alternative treatment for mild to moderate ED, particularly in patients with a psychologically fear of phosphodiesterase type-5 enzyme inhibitors, deserves further research.“

Cormio, L., et al. (2011). “Oral L-citrulline supplementation improves erection hardness in men with mild erectile dysfunction“, in Urology. Vol. 77(1). Pp. 119-22.


Muira Puama, also known as Ptychopetalum olacoides or “potency wood,” grows primarily in Brazil and is believed to have the ability to improve sexual function especially in old men. (Read more here)

“Few clinical studies have so far examined the prosexual effects of Muira puama. Waynberg reported in 1994 that 60% of men with low libido have reported increased sexual desire and 50% of men with poor erection have reported improved erectile function following Muira puama administration. Another study has shown that Muira puama improved sexual desire, sexual fantasies, and the ability to achieve orgasm in 65% of women with prior sexual dysfunction.“


Maca has been heavily marketed as being effective at improving sexual desire, and this claim is backed by research. A review from 2010 that included four randomized clinical studies with a total of 131 participants found evidence that maca improves sexual desire after at least six weeks of ingestion. (Read more here)

“The results of our systematic review provide limited evidence for the effectiveness of maca in the improvement of sexual function. However, the total number of trials, the total sample size, and the average methodological quality of the primary studies were too limited to draw firm conclusions. Moreover, our current knowledge of the risks of maca intake is insufficient. More rigorous studies are warranted.“

Shin, B. C., et al. (2010). “Maca (L. meyenii) for improving sexual function: a systematic review“, in BMC Complementary & Alternative Medicine. Vol. 10. Pp. 44.


Eurycoma longifolia, also known as Long Jack, is reputed as an aphrodisiac and remedy for decreased male libido. What is more, there are claims that it can even boost testosterone levels in men. However, this has been showed to work only among men with very low concentrations of testosterone, not if you have normal levels of this hormone. (Read more here)

“This study investigated the effect of treatment with the proprietary standardized, water-soluble extract of the root of the Malaysian plant, Eurycoma longifolia Jack, which is thought to enhance male fertility with regard to higher semen volumes, sperm concentrations, the percentage of normal sperm morphology and sperm motility in male partners of sub-fertile couples with idiopathic infertility. … Follow-up semen analyses in these patients showed significant improvement in all semen parameters. The proprietary extract of Eurycoma longifolia Jack significantly improved the sperm quality in these patients, allowing for 11 (14.7%) spontaneous pregnancies.“

Tambi, M.I., & Imran, K.M. (2010). “Eurycoma longifolia Jack in managing idiopathic male infertility“, in Asian Journal of Andrology. Vol. 12(3). Pp. 376–380.

“The results showed that E. longifolia produced a dose-dependent, recurrent and significant increase in the episodes of penile reflexes as evidenced by increases in quick flips, long flips and erections of the treated male rats during the 30 min observation period. These results provide further evidence that E. longifolia increases the aphrodisiac potency activity in treated animals.“

Kotta, S., et al. (2013). “Exploring scientifically proven herbal aphrodisiacs“, in Pharmacognosy Review. Vol. 7(13). Pp. 1–10.


Indian long pepper, also known as Pippali, is sometimes used in combination with other herbs in Ayurvedic medicine. Some women use it (not only) to treat the loss of interest in sexual activity. The long pepper contains a chemical called piperine – a well known thermogenic that can promote sex drive as well.

“The results revealed that compared with control group, male mice fed on aqueous as well as ethanol extract of black pepper significantly showed a shorter courtship latency (p<0.05). On the other hand, there was no difference in the mounting frequency between treated groups. Interestingly, the mounting frequency showed a strong negative correlation with the courtship latency (r = -0.968). In conclusion, the fruit extract of black pepper potentially affect sexual drive in male mice.“

Kanedi, M., et al. (2015). “Effects of Black Pepper (Piper nigrum Linn.) Extract on Sexual Drive in Male Mice“, in Research Journal of Medicinal Plant, Vol. 9(1). Pp. 42-47.


These include Gelatin, Magnesium Stearate, and Titanium Dioxide.


US Food & Drug Administration (FDA) regularly tests various pills that are sold as dietary supplements. Even those related to improving sexual performance.

There are a lot of products on the market that FDA even warns about. Just see for yourself:

Luckily, I was not able to find any warning about SizeGenix.

This may be due to the fact that this product has not been tested at all (as this is not a mandatory procedure) or that it has already been tested and nothing harmful or hidden was discovered.


attractive man with size issue

Usually, manufacturers state that their products are great and without any side effects. As you can see in paragraphs above, many ingredients in SizeGenix pills are natural and improve penis health as well as firmness and size of erections.

However, what does a reputable website, such as says about these (last checked July 25, 2017)?

  • NIACIN (vitamin B3) might cause burning, tingling, itching, and redness of the face, arms, and chest, as well as headaches, stomach upset, intestinal gas, dizziness, pain in the mouth, and other problems (LIKELY SAFE – see more here)
  • BUTEA SUPERBA is rather new and there isn’t enough information to know what the possible side effects might be (UNKNOWN – see more here)
  • TRIBULUS TERRESTRIS extract might make prostate conditions such as benign prostate hypertrophy (BPH) or prostate cancer worse, and decrease blood sugar levels (POSSIBLY SAFE – see more here)
  • L-ARGININE NITRATE can cause some side effects such as abdominal pain, bloating, diarrhea, gout, blood abnormalities, allergies, airway inflammation, worsening of asthma, and low blood pressure (POSSIBLY SAFE – see more here)
  • VITIS VINIFERA might cause diarrhea, stomach upset, indigestion, nausea, vomiting, cough, dry mouth, sore throat, infections, headache, and muscular problems (LIKELY SAFE – see more here)
  • PROTODEXX MATRIX complex is not even listed by the
  • L-CITRULLINE is rather new and there isn’t enough information to know what the possible side effects might be (POSSIBLY SAFE – see more here)
  • MUIRA PUAMA is rather new and there isn’t enough information to know what the possible side effects might be (UNKNOWN – see more here)
  • MACA ROOT might act like estrogen and maca seems to be well tolerated by most people (LIKELY SAFE – see more here)
  • There are no side-effects for LONG JACK (EURYCOMA LONGIFOLIA) listed by (POSSIBLY SAFE – see more here)
  • LONG PEPPER extract is rather new and there isn’t enough information to know what the possible side effects might be (UNKNOWN – see more here)

Because makers of SizeGenix declare that they use all-natural ingredients, the company itself lists no negative effects of using this formula. The only side effect, when properly dosing, will be the potential to have an allergic reaction to one of the ingredients.


Always try to combine improved blood flow (thanks to male enhancement pills) with the traction and tension applied to the shaft of your penis (thanks to exercises, pumps, and extenders) for a very slow, yet permanent size growth.


young man with huge penis in pants

All these user testimonials and feedback are collected from other online websites. Therefore, I can not ensure their validity. Please take these with a grain of salt.

I have gone through a lot of user testimonials available on the internet (Amazon mostly). From what I was able to learn, users usually claim that this product either works great or not at all.

If you do not trust me, then I have a selection of user testimonials to make the point. Just see for yourself in the user feedback below.

“I don’t know that it actually made a size difference but it’s only been a month so far. Definitely increased stamina and sex drive though. Good product overall.”

– User feedback from Amanda T. left on (last seen July 25, 2017)

“Well I thought for sure this product would work after reading so many positive stories. This product didn’t measure up and I would not purchase it again. Doesn’t work !!”

– User feedback from alejandro lugo left on (last seen July 25, 2017)

“I bought Sizegenix fairly conviced it was a scam. I figured $40 in exchange for possibly getting bigger was worth the gamble. And boy oh boy did it pay off. I finished my first bottle and have gotten 2 inches bigger. I am placing another order today. This stuff is the BOMB!!”

– User feedback from GatorDan left on (last seen July 25, 2017)

“Do not expect rapid growth you will not get larger just feel at full potential the chubb is impressive none the less.”

– User feedback from marshall miller left on (last seen July 25, 2017)

“It’s OK didn’t grow or notice anything different. It’s not worth 40 bucks.”

– User feedback from Jay money left on (last seen July 25, 2017)

As you can see, not all feedback is just positive. Therefore, be prepared that this product may give various results to different people. That is why I recommend purchasing a smaller supply of pills at first.


It is not unusual that many unethical companies producing male enhancement pills pay for fake user testimonials to promote their products. That is why you need to be critical when assessing user testimonials.

Luckily, fake ones have usually at least few things in common:

  • These are extremely positive promising huge (often unrealistic) gains
  • These often state that their results were achieved very quickly
  • If going through user reviews on Amazon, ignore those that are not marked as “Verified Purchase”

Just keep in mind that you always need to take extremely positive claims with a grain of salt (even if these are genuine). It is better to be safe than sorry.


90 day guarantee

What is the best place to buy SizeGenix pills?

Right now, you can get real SizeGenix pills mostly online through the official website or through select authorized dealers worldwide. However, just a quick google search will provide you with a lot of websites that offer these pills as well.

But can you trust these sites that they will send you a real product (and not a fake one)?

That is why I always recommend buying any pills from the official product website ( if you want to be 100% sure you will not get scammed.

Below I made a screenshot how it should look like:

sizegenix official website

(Image was taken on July 25, 2017)

The best part of making your purchase on the official product website is that you are offered an excellent, 90-day money back guarantee. This is a quote from official FAQ page (quote taken on July 25, 2017):

“We don’t just offer a money-back guarantee – we offer the strongest, most honored money back guarantee in the entire industry. Simply put – if you are not 100% thrilled with the amazing results you get with SizeGenix® you can get a complete 100% refund within 90 days of purchase – no tricks, not games, no complicated forms, no tomfoolery like other companies.

With regards to privacy of your purchase, you will get your supply of pills in a plain brown package. Just see for yourself what they say about it (quote was taken again from official FAQ page on July 25, 2017):

“SizeGenix® is shipped in a plain padded envelope and no one but you will know what’s inside your package.

“We ship Monday through Friday and always ship within 24 hours upon receipt of your order. Shipping takes between 2 and 7 business days (within the USA).”

I have to say that these conditions for a money back guarantee in a market for male enhancement pills are more than fair and customer-friendly.


As far as price and packages go, the official website offers multiple options for you to choose from. You will be offered discounts if you decide to purchase multiple packages.

You can choose following four options (last updated July 25, 2017):

Both shipping and billing are discreet. Sadly, I have not discovered any information on the costs of domestic as well as international shipping.


sizegenix vs male extra

Comparison of Ingredients:

The SizeGenix website only provides you with the most active substances they use in their formula. However, the precise numbers for each individual substance in their patented proprietary blend are missing.

The official website of Male Extra is very open with regards to ingredients used. There are precise numbers of each substance used.

With regards to ingredients, I have to point out that company behind Male Extra is much more transparent and reliable as they provide precise numbers of each substance used.

Comparison of Dosage:

With SizeGenix pills, all you have to take are just two pills on an empty stomach (preferably in the morning) once a day.

The Male Extra brand states that you need to take three pills daily, preferably after your meal.

Although it may seem that SizeGenix has better dosage (you take one pill less), I do not like the fact that you should take this supplement on an empty stomach. Doing this may often upset stomach of people with digestion issues (this is my case with any pills taken on an empty stomach). That is why I prefer dosage rules of Male Extra a little bit more.

Comparison of Guarantee & Price:

The one month supply of SizeGenix will cost you $39.95 and comes with 90-day money back guarantee.

On the other hand, for a monthly supply of Male Extra, you will pay $64.95 and comes with just a 60-day money back guarantee.

As you can see, with regards to money-back guarantee and how much you will pay, the SizeGenix brand is a clear winner.

male extra bottles

Warning: Male Extra Pills Reviews and Side Effects Exposed!

Product name: Male Extra Producing company: Wolfson Berg Limited Official website: Amazon offer: Available GNC offer: Not available Alternative products: VigRX, ProSolution & ExtenZe One of the best pills to increase blood flow to your penis....


sizegenx single bottle









Click here to make your purchase on the official website

So is this the best supplement for penis enlargement? Well, my answer is rather complicated. Neither can I say it is the worst option on the market, nor I can recommend it as the best.

It has its pros as well as cons.

Although all of the ingredients used are natural – a major bonus – the official company does not declare precise numbers of individual substances used in their proprietary blend (at the time of writing this review).

This is always a huge warning flag for me.

Additionally, there are a lot of negative user reviews on Amazon for this product. Therefore, I can not fully recommend this product, especially when there are other better options on the market.


Male ExtraVigRX & ProSolution

Hey folks! My pen name is James Buzinko (a.k.a. Stallion) and I want to make this THE GREATEST place for every guy to master the arts of love, dating and attraction! I am young, free and my motto is "Carpe Diem".