Quick Take: Powerful testosterone boosters such as synthetic steroids and prohormones (and even some natural test boosters) require you to take a PCT on your off cycle. Because if you didn’t, it’d be so hard to maintain your hard-earned muscle because of a rapid decrease in testosterone. MuscleTest, as a PCT, helps with this bodybuilding problem through ingredients that’re distributed among four prop blends with specific role designations. Check out the review to see how well this PCT/test booster is tuned.
- The brand that manufactured MuscleTest is American Metabolix. It was formerly known as American Muscle. I kind of like this new name, to be honest. It now sounds like a genuine bodybuilding company as compared to being a general classification of American-made muscle cars.
- MuscleTest is touted to be a complete PCT formula and “the ultimate time machine”.
- As per my understanding of how they market their product, their goal seems to naturally produce testosterone by stimulating the pituitary gland to release more luteinizing hormone (LH).
- Speaking of marketing, I personally think American Metabolix did a fine job in advertising MuscleTest by providing a detailed look at each ingredient in their formula. But of course, I don’t rely on this so much as I like to do my own research. Otherwise, I’d be forfeiting the unbiased purpose of this review and this entire website.
- I found a bunch of controversial ingredients found in the formula including Deer Antler Powder which was formerly a WADA banned substance.
- Available to buy online and in retail stores including Amazon and American Metabolix’s own website. Unfortunately, I can’t find it in GNC but I did find other American Metabolix products.
|LH Rejuvenation Blend||545 mg|
|Tribulus terrestris Fruit Extract, Bulbine natalensis Stem Extract, Fadogia agrestis Stem, Tongkat Ali (Eurycoma longifolia) Root Extract, Oat (Avena Sativa) Whole Herb Extract|
|Estrogen Killer||193 mg|
|White Button Mushroom (whole mushroom), Indole-3-Carbinol, Naringin, Diindolymethane|
|TSH and Adrenal Support Blend||256 mg|
|Green Tea Leaf Extract, Amla (Emblica officinalis) Fruit Extract, Rhodiola rosea Root Extract, Citrus aurantium Fruit Extract, Ashwagandha Root Extract, Reishi Mushroom (fruiting body), 3,5-Diiodo-L-Tyrosine|
|Libido Aphrodisiac Blend||593 mg|
|Velvet Bean (Mucuna pruriens) Seed Extract, Chlorophytum borivilianum (Safed Musli) Root Extract, Stinging Nettle Root Extract, Pygeum Bark Extract, L-Dopa (from Mucuna pruriens Extract), Deer Antler Powder|
MuscleTest’s T-Boosters & Other Ingredients
LH Rejuvenation Blend
- Tribulus Terrestris – It’s been used for quite some time now (centuries, actually) as a libido enhancer and it’s currently one of the most popular herbs in testosterone boosters. One reason for its popularity is that it may have potential benefits on LH. However, research on this pretty troubling. Let me show you.
This research was conducted to study the effects of Tribulus Terrestris on the hormonal levels of men with oligozoospermia. The results of the study showed significant benefits in sex parameters but when it came down to the effects of Tribulus Terrestris therapy on hormones (LH, FSH, and testosterone), the researchers said that “there was a statistically insignificant difference found in all of these parameters”.
Another study on the effects of Tribulus Terrestris on testosterone and erectile function in aging males stated that the results of their study “showed a statistically significant difference in the level of testosterone (total and free) and IIEF-5, but no statistically significant difference in the level of LH before and after treatment”.
This last study was conducted on healthy, young males. To cut this short, the researchers stated that “the findings in the current study anticipate that Tribulus terrestris steroid saponins possess neither direct nor indirect androgen-increasing properties”.
While on first glance these studies may seem contradicting, there’s actually an explanation that can be made after further analysis of these results and that is Tribulus Terrestris being ineffective at influencing testosterone on men with already healthy levels of test but may be beneficial to older men who’re typically suffering from lower levels of T. Regardless, it looks to be a pretty potent sex enhancer.
- Bulbine Natalensis – Here we have another troubling ingredient. According to this study, the researchers did find significant increases in testosterone and LH along with improvements in sex parameters. This is good. However, these trials were done in low dosages (25 and 50 mg/kg) on rats. On a higher dose of 100 mg/kg, the results were contrasting. There doesn’t seem be any human trials done on this plant yet but if the rat study was of any significance, my advise is to be wary of taking this at high doses.
- Fadogia Agrestis – This is an herb that’s particularly popular among serious bodybuilders who’ve underwent or are going through an anabolic steroid cycle. It prevents and reverses unwanted side effects such as the shrinking of the testicles. This is supported by a study saying that Fadogia Agrestis significantly improved testes-body weight ratio. It seems to do this in similar ways as Human Chorionic Gonadotropin (HCG), by allowing the body to still produce LH and FHS. The production of these hormones typically shuts down when in an intense testosterone boosting cycle such as steroids.
- Tongkat Ali – Particularly for the purposes of this blend, I feel like Tongkat Ali is their strongest ingredient. It’s a great ingredient for supporting LH while also increasing testosterone and controlling cortisol.
- Avena Sativa – More commonly known as Oat Straw, it is said to have testosterone boosting benefits but I have yet to see solid evidence backing this claim. As a nootropic, however, Avena Sativa is the sh*t with its calming and cognitive benefits.
- White Button Mushroom – AKA White Button Mushroom, I think this is a solid choice as an Estrogen Killer with science to actually back it up as an aromatase inhibitor.
- Indole-3-Carbinol – Or I3C for short, converts to DIM during digestion. DIM, which is also found in this blend, has aromatase and SHBG inhibiting properties. This leads to more “free” testosterone and lower levels of estrogen.
- Naringin – This compound is the major flavonoid glycoside in grapefruit and it is metabolized to naringenin in humans. According to this study, naringenin showed strong to moderate aromatase inhibition.
- Diindolymethane – Compared to its precursor I3C, DIM is the more bioactive of the two. However, it still is a pretty questionable ingredient in my eyes. Although it’s becoming more and more popular in testosterone boosters because it does show anti-aromatase activity, it’s also shown to compete with DHT in terms of binding to receptor sites. If you didn’t know yet, DHT, despite its apparent negative reputation, is an even manlier hormone than testosterone. To put in this product’s perspective though, preventing DHT build up might be beneficial as a PCT.
TSH and Adrenal Support Blend
- Green Tea – This popular drink offers fat loss by increasing metabolism and limiting fat digestion. Additionally, the L-Theanine found in Green Tea is similar to Avena Sativa in that increases Alpha Brain Waves for nootropic benefits while also supporting relaxation and reducing stress and anxiety.
Amla – Otherwise known as Emblica Officinalis, also enhances energy metabolism which may help in thyroid function.
- Rhodiola Rosea – An adaptogen that strongly counters stress and fatigue which is beneficial in maintaining post-exercise levels of testosterone.
- Citrus Aurantium – Similar to green tea and amla, this ingredient enhances metabolism which could theoretically help our thyroid.
- Ashwagandha – Another adaptogen that may help physical performance by resisting stress. Subsequently, these anti-stress benefits could also prove beneficial to testosterone.
- Reishi Mushroom – I couldn’t find any research regarding its effects on testosterone but I found that it was sometimes used for thyroid problems.
- 3,5-Diiodo-L-Tyrosine – Here we have another troubling ingredient. While it does play a role in stimulating TSH, it could stimulate it too much.
Libido Aphrodisiac Blend
- Mucuna Pruriens – One of my favorite natural testosterone boosters simply because it works. The L-DOPA found in this plant increases LH which then leads to more test. Some of the most powerful test boosters have this ingredient.
- Safed Musli – Seen here as Chlorophytum Borivilianum. It doesn’t really do much for testosterone but the sex boosts you get from this herb is legit.
- Stinging Nettle – This herb hits testosterone boosting from different angles. Overall, it increases levels of “free” test by inhibiting aromatase, 5-alpha-reductase, and SHBG. Specifically as a PCT, it could be useful for reducing estrogen and DHT.
- Pygeum Bark – Similar to Stinging Nettle and DIM, it might beneficial for DHT reduction.
- L-Dopa – Already discussed in Mucuna Pruriens. Check this blend’s top bullet.
- Deer Antler Powder – As I’ve said, it was formerly banned by WADA. It’s been taken out of that list though so don’t worry. It’s legal now and it’s been used to stimulate the increase of growth hormones.
As a dietary supplement, take 2-3 capsules (1 serving) 30 minutes before working out
That was quite a long list of ingredients to go through, ain’t it? We’re finally here. Let’s analyze the prop blends one by one, shall we?
First, we have the LH Rejuvenation Blend. The end goal of the blend is an increase in the natural production of testosterone by increasing LH. The primary ingredient, Tribulus Terrestris, looks to be a bad decision because the studies I’ve mentioned don’t really show any significant change in LH levels. The rest of the ingredients here seem on point though. Just be careful about Bulbine Natalensis.
Next is MuscleTest’s Estrogen Killers. White Button Mushroom and Naringin look like safe and effective choices so kudos to MuscleTest on both these ingredients. I3C looks redundant though because DIM, I3C’s more bioavailable counterpart is also found in the blend but overall, the blend looks decent.
The third blend is their TSH and Adrenal Support Blend. This one looks to be a blend of metabolism enhancers and adaptogens. This combo of benefits seem to support healthy functioning thyroid so mostly, I have no complaints here. Except maybe 3,5-Diiodo-L-Tyrosine. Thankfully though, it’s the last prioritized ingredient so its potential side effects of over stimulating the thyroid is put to a minimum. I personally think that 3,5-Diiodo-L-Tyrosine is a bad choice but the move of prioritizing it last was a good move. Nice one, MuscleTest.
Last is MuscleTest’s Libido Aphrodisiac Blend. If we’re talking about libido, Tribulus Terrestris should’ve been here instead of up there with the LH Rejuvenation blend. No matter, this prop blend’s top ingredient is still an excellent choice. Mucuna Pruriens is a great ingredient for boosting testosterone and with boosts in T, libido follows suit. Safed Musli looks to be an excellent libido enhancer too.
The rest of the ingredients in that last blend don’t seem to have powerful benefits on libido but they do have their place in PCT formulas.
As a whole, I think MuscleTest is a decent PCT albeit a few questionable and risky ingredients. Just be sure to follow the label’s instructions and DON’T TAKE MORE than the recommended dose.
Does it Work?
Like I said – It’s a decent PCT. So, yeah. It works.
Typically when you’re coming off an intense testosterone boosting cycle (especially if you were taking anabolic steroids or prohormones), you’ll have extremely high levels of test. This is good but it also comes with other effed up hormonal imbalances and risks. That’s where PCTs come in. PCTs help maintain high levels of testosterone while keeping DHT and estrogen in check to curb potential side effects. PCTs also keep your libido, muscle, and energy up to par.
MuscleTest does all these.
- Maintains Testosterone – Which is what you’d expect a good PCT to do.
- Regulates hormones – Again, a good PCT isn’t a good PCT if it doesn’t have at least this.
- Sex – the natural libido enhancers found in this formula aren’t just confined to their Libido Aphrodisiac Blend.
- Safe – Well, it’s a PCT. It’s supposed to diminish potential side effects so this should be a given. Although, I have to repeat myself. Don’t take more than the recommended dose because there are ingredients here (Bulbine Natalensis, DIM, Deer Antler, and 3,5-Diiodo-L-Tyrosine) that are counterproductive if taken at higher dosages. The customer reviews are also pretty decent with no reports of any major side effects.
- Adequate dosages – They’re not exactly heavy on the mg’s, but they’re also not weak. With some of the ingredients found here, this is a positive. Refer to above bullet.
- Proprietary blends – The way they arranged their ingredients in prop blends sort of make it easier to analyze but not having to see their exact dosages make it so much harder.
- Troublesome ingredients – Once again, let me warn you about Bulbine Natalensis, DIM, Deer Antler, and 3,5-Diiodo-L-Tyrosine.
- Plain forms – There’s quite a number of ingredients here. Sadly, not a lot of high quality ones.
- Expensive – I mean, you’re technically going to have to shell out a few couple bucks for steroids, prohormones, and even testosterone boosters. To add, after your cycle, PCTs such as this are going to break your bank in no time. It’s sold at around $90 on their website. It’s sold way cheaper at Amazon though, but still.
The Bottom Line
I wouldn’t go so far as to say it’s the best PCT out there but it’s a pretty decent choice. It does what PCTs are supposed to do which is essentially what you want to have. That said, if you’re the dude who’s just coming off an intense testosterone boosting cycle and you want to maintain your test and muscle while curbing unwanted side effects, you might want to consider using MuscleTest.