Hydroxystim Review

By: Rob Miller
5 User Reviews
Fact Checked On: 4-24-2020

hydroxystim reviewWe have reviewed several different pre workout and fat burning supplements over the past 6 months, and some are just a waste of money, while others work great.  After browsing through my local GNC for a fat burner, I came across a brand new supplement called Hydroxystim, which is manufactured by Muscletech.  For those of you who don’t know, Muscletech is a leading company in the area of nutrition supplements, and has been selling quality products for years.  Muscletech Hydroxystim is very new to the supplement world, and was actually marked down, I assume in an effort to get it out to the public.  What follows if my personal review of this product, with detailed information about the ingredients, my side effects, and more.

What is Hydroxystim?

Manufactured by Muscletech, Hydroxystim is a “super concentrated thermo-stimulant”, which is kind of a mesh between a pre workout supplement, and a thermogenic fat burner.  It’s very similar to a product called phenterex, but does not use phenphephrine.  It currently retails in GNC for about $40 (at the time of this review), and one bottle contains 110 thermo release capsules.

The primary ingredients in Hydroxystim include yohimbe and caffeine, two powerful stimulants that are used in dozens of fat burning supplements as well as appetite suppressants.  The caffeine content in this product is 100 mg, which is about the equivalent of 2 cups of 8 oz coffee.  Im assuming you don’t know what Yohimbe bark is so I will touch on that ingredient quickly.  Yohimbe is an extract that comes from various regions of the world, and is a primary ingredient in many male enhancement supplements.  It works as a fast acting stimulant, causing blood to flow freely and quicker than normal.

The other ingredients in Hydroxystim include: geranium extract, deanol bitartrate, huperzia serrata, and a number of fillers and coloring blends.

Our Results From Hydroxystim

At first, I was pretty excited to try Hydroxystim out.  I have been looking to lose about 10 pounds recently as a result of too many cheeseburgers and pizza, but never really got around to it.  Once i bought the bottle, the rep in GNC said to start off slow (1 to 2 capsules) for the first few days, and see how my body responded to it.

Well, I always like to start with just one capsule to see what happens, and after about 30 minutes I started to feel it kicking in.  At first it felt no different from drinking a couple of cups of coffee, but then i got an EXTREME BURST in energy, and felt like I could run a marathon.  After about an hour though, the side effects of Hydroxystim started kicking in.  I got a little nausea, followed by a splitting headache, which not even a double dose of excedrin could take care of.

I will say this though, it did give me a huge burst of energy and that lasted for about 3 – 4 hours.  Coupled with the side effects though, I don’t really know if I could actually drag myself to the gym to get a workout done.  I took Hydroxystim a few more times after that first day, and the side effects started to get less and less.  I can feasbily see how using this for a period of time will help you get used to the products potency, but that first day was aweful.

What I Found Out about Hydroxystim

I wanted to know why I got the side effects I did from Hydroxystim, so I decided to do some research online to figure out what the problem was.  After some digging, I noticed that the ingredient Yohimbe has reported several adverse reactions with men who have taken it, and the side effects appeared to the be the same ones I was experiencing.  This is not to say that Hydroxystim does not work, its just that each guy is going to respond differently to it.


Purely from my point of view, I would recommend that you speak with a doctor before trying Hydroxystim.  There are several problems that could be associated with taking a product that contains Yohimbe, and even though it might be in a small amount, it is not worth taking the risk.  I would also recommend that you take a look at some other fat burners / pre workout supplements that do not contain any stimulants if your concerned about it.

If Hydroxsystim sounds like something u[ your alley, don’t forget to take it along with a healthy diet and good workout routine to get the best results possible.

Have You Tried Hydroxystim?  Please Leave Your Review Below!

Top 3 Fat BurnersAffiliate Disclosure

#1 Rated – Instant Knockout

#1 Rated - Instant Knockout

Instant Knockout is actually a new fat burning supplement I just came across, and got great results.

Click Here To Learn More »

#2 Rated – HourGlass Fit

#2 Rated - HourGlass Fit

HourGlass Fit is the BEST fat burner for women we’ve ever tested. Read our review here.

Click Here To Learn More »

#3 Rated – Keto OS

#3 Rated - Keto OS

Biohacks your body into instant ketosis to burn fat instead of carbs. Weight loss, energy, focus, anti-inflammatory, anti-aging.

Click Here To Learn More »

Ask A Question

User Questions and Answers

I bought a few bottles in 2013 I'm on my last bottle now. I only use one when I go jogging it makes it a lot easier where can I purchase now ? -richard maxwell

It's been recalled, and as far as I can tell, it's no longer available anywhere.- Rob

Was this question helpful to you?

Author: Rob Miller

Supplement Critique

Rob Miller founded SupplementCritique.com over 7 years ago, and has been the chief editor ever since. He has a diploma in Advanced Dietary Supplements Advisor, and worked at GNC for 3 years. He KNOWS supplements, both inside and out. Rob currently resides in Jupiter, FL, with his wife of 4 years.  Learn more about him in his Bio here. Follow him on Twitter , Facebook, LinkedIn, or find him on Google +.

9 comments on “Hydroxystim Review”

Leave A New Comment

  1. Hello sir I just want if know what if we use that product with one day gap. So slowly slowly we been use to it and get less side effect.

    I use it on my first day and it gives me a great push to do more exercise se what if I use it with one day gap.?
    1. Hey Muze,

      You’ll have to test it out and see if it works. I always start a new supplement with the lowest dose or even half a dose to see how I’ll be affected.

      Halving your dose each day might actually work better for you.

  2. hydroxystim, contains an ingredient which is used to enhance “men” workout, such as yohimbe extract, so my query is that is this product hydroxystim from muscletech, safe to be used only for males, or can females also use this product?
    1. Hey Nancy,
      Yohimbe (and Hydroxystim) is as safe for women as it is for men. That is to say that some people do experience side effects. I was one of them, in fact.

      It could work great for you. Just take it slow at first, like MuscleTech recommends.

  3. Yesterday was my first workout in quite a while. As a 25 yr old female I really haven’t done too much since high school, besides for the workout class here and there.

    My fiance got hydroxystim for me to try. I took one capsule before my workout yesterday.

    I was actually very impressed with the amount of endurance I had with the help of the hydroxystim. I was able to spend 30 minutes high intensity on the elliptical, followed by about and hour and a half of weight training.

    I did get a headache about half way thru, but as I was sweating ALOT I just chugged about half a gallon of water and within minutes the headache was gone. Post workout I was pretty hungry, but craved sugar so I had a large blueberry muffin and just that filled me up.

    My only complaint was that in the middle of the night I woke up and my pj’s were drenched in sweat and I felt extremely HOT! However, I just hopped in the shower, rinsed off and changed into something else and slept thru the rest of the night fine.

    I’m hoping that this will wear off and I won’t get the night sweats as badly once I my body gets a little more used to the product. So far so good with this product, so I will give another review after a few weeks or a month or so.

  4. taking it for one week now and feel nothing. but then again I am a serious coffee drinker and perhaps this product is not as strong as my morning cup! i play soccer semi-competatively (a little over 35 years now) and my games are late so a boost would be nice.
  5. Hello. I’m 23 yr old female and I try the hydroxystim and I loves this product.

    I was taking about 2 pills 30 min before my workout and I didn’t have any crash like effects but I did combine this with the gaspari spirodex and I dropped weight quickly while working out of course. But the combination left me some serious headaches if I didn’t take those pills in the morning and do my workout.

    I think I went through a caffeine withdrawal lol.
    Anyways great product for those who like cardiovascular and want a supplement they can “feel”. Cheapest I’ve found is online for like $20I a bottle.

Leave A Comment

Your email address will not be published. Required fields are marked *