Grenade AT4 makes a bold and enticing claim – “developed to transform your body’s anabolic environment”. It is marketed as a supplement that can optimise your hormonal balance and ensure your body recovers quicker after training.
Hitting the weights and eating enough calories and protein is a great start towards developing muscle mass and muscle strength, but you also need the right hormonal balance – with the right nutrients directed to muscle repair and recovery – to really maximise your gains. That’s what Grenade AT4 claims to do for you.
It’s also a natural testosterone booster, but does it go much further than that? Let’s look at the ingredients and find out.
Note: Dosages mentioned are for a daily dose of Grenade AT4. A daily dose = six capsules (or two servings of 3 capsules each).
Vitamin D3, 25ug
The latest advice from the NHS suggests that everyone should supplement their diet with 10ug of Vitamin D daily, so the fact that Grenade AT4 packs two-and-a-half times this amount per daily dose is great news. But what are the benefits of Vitamin D in regard to testosterone levels and other anabolic effects?
Well the evidence suggests that supplementing your Vitamin D intake is a good way of increasing both bioavailable and free testosterone levels, although this particular study was conducted on men who were trying to lose fat rather than gain lean muscle mass.
There’s nothing to suggest that Vitamin D is anything other than beneficial when it comes to testosterone levels though, so its inclusion in the Grenade AT4 mix is certainly welcome.
D-Aspartic Calcium Chelate, 3,000mg
D-Aspartic Calcium Chelate (D-AA-CC) is by far the heaviest dosed component of Grenade AT4, with 3,000mg per daily dose of the supplement, bang on what you would expect a testosterone boosting compound to contain.
D-Aspartic Acid, or D-AA, is a common ingredient in testosterone boosters and has been researched thoroughly, proving to be an effective booster of LH and free, serum and total testosterone in certain men.
One study from 2009, for instance, showed an increase in testosterone levels in D-AA supplemented men of up to 42% over 12 days. A conflicting study, however, found little testosterone improvement after D-AA supplementation. Researchers explained the difference by theorising that it was due to the base levels of testosterone the study participants had to begin with, and their exercise levels.
In short, D-AA may be very effective at raising testosterone levels temporarily (less than two weeks) in healthy men but could be much more effective in men with a testosterone deficiency, or who are infertile (D-AA helps with seminal motility).
As D-AA and therefore testosterone levels drop in older men, this could be a good choice for many, proving popular with both an older age group and bodybuilders or athletes who want that short-term boost.
D-Aspartic Calcium Chelate is the more water-soluble version of D-AA, making it easier to digest.
Fenurex™ Fenugreek, 720mg
Fenurex™ is a compound that is found exclusively in Grenade AT4 and so there is not much information about this particular extract, although the effects of Fenugreek have been widely documented.
The recommended daily dose if your goal is to increase testosterone production is 500-600mg so the AT4 nails this with a little to spare.
Various extracts of Fenugreek have been tested in both animal and human trials and overall the results point to a positive effect on your body’s ability to maintain healthy testosterone levels. Note, however, that most of the studies to date have been carried out by Fenugreek manufacturers, or on behalf of specific Fenugreek supplement brands by companies with a vested interest in its success.
That doesn’t mean the results don’t count, just that you may want to keep an open mind.
And here’s another warning – Fenugreek may or may not be able to preserve or boost T-levels, but if it does, it seems to be at the cost of DHT, an even stronger male hormone. Which isn’t what you want.
This could also be what Grenade are getting at when they say the AT4 transforms your body’s anabolic environment, but again, DHT levels would suffer.
That said, Fenugreek does seem to help improve lean muscle mass, enhance libido, reduce fat and help increase upper and lower body strength. Consider its inclusion on that basis and it could be a useful addition to Grenade AT4.
Passiflora Caerulea, 147.5mg
Passiflora Caerulea, or the “Bluecrown Passionflower” is mostly used to treat anxiety but it has also been claimed to belong to a group of natural botanicals with testosterone-boosting properties. The recommended dose is 400mg per day so Grenade AT4 goes a bit light on it, too light in fact.
Offering just less than 150mg per day means that users of Grenade AT4 are unlikely to reap any additional benefits from the passionflower extract here. What’s more, the biggest study to date on its ability to produce testosterone shows that the only group to experience an increase in testosterone are men aged 50 or above, suggesting it may only work for those with low baseline testosterone levels.
Other evidence suggests that in order to be really effective, the extract should be injected directly in to the testicles which, let’s face it, is not an option for anyone other than the fanatically devoted.
The jury is still, to some extent, out on boron in terms of its ability to boost testosterone levels. Human studies on boron’s T-boosting potential have shown mixed results, with one study reporting an increase in free testosterone in subjects due to its ability to reduce the amount of Sex Hormone Binding Globulin (SHBG) in the body. This in turn boosts the percentage of free testosterone in your system. Other studies have not been so conclusive.
It does seem, however, as though boron increases vitamin D serum and magnesium levels, both known to help testosterone by either supporting the elements involved in its production or by providing the raw materials for it. As such, boron’s addition to Grenade AT4 could be useful and certainly shouldn’t hurt.
It is not advised to take more than 20mg of boron per day so we encourage you to follow the advice and not exceed the recommended dose of Grenade AT4.
- Grenade AT4 contains many leading testosterone-boosting compounds.
- High quality ingredients in premium forms in some cases, such as D-AA-CC.
- Low risk/chance of side effects as long as you follow instructions.
- Great overall synergy between ingredients.
- Includes potent servings of D-AA-CC and vitamin D3, well done Grenade AT4.
- Should help to energise and improve muscle pumps, boost muscle mass and to aid recovery after training. Ideal for bodybuilders.
- We like the fact that it is non-proprietary and reveals all ingredients and dosages.
- Pricey (£50 if you buy from the main website).
- Dosages of some ingredients are too small.
- A daily dose includes SIX capsules. That’s a lot to remember to take, though you can take them altogether or in two sittings.
- Pretty pointless to include the passionflower (Passiflora Caerulea).
- Contains additives in its capsules making it unsuitable for vegans.
All reviews are taken from Amazon UK. Click to enlarge.
Provided you follow the instructions for taking Grenade AT4 and are healthy and active, you shouldn’t experience any adverse side effects.
Overdosing or not following the guidelines for cycling this supplement (see below) could result in reduced libido, anxiety, nausea and may end up reducing overall testosterone levels.
How to Take It
Grenade advises that you take six AT4 capsules per day, either in one go first thing in the morning, or in two doses at least half an hour prior to breakfast and lunch.
You should use a weekly cycle of five days on, two days off and after eight weeks of using, take four weeks off completely before using it again.
Who Could Benefit?
Anyone looking to maximise the amount of testosterone available to them could benefit from taking Grenade AT4. Evidence suggests that it can slow the natural decline in testosterone production whilst prolonging libido and energy levels. It is a popular choice for bodybuilders. Note that Grenade AT4 has been designed for men only, and has not been tested on women.
Does it Work?
As a testosterone booster, Grenade AT4 has limited effectiveness. There are certainly more powerful options available if boosting testosterone is your main goal.
That said, D-AA and fenugreek is a popular anabolic stack among bodybuilders for its ability to boost hormones, potentially increase T-levels and quicken muscle repair and recovery. The boost in energy, libido and sexual function is a bonus too. This combo in Grenade AT4 might also work well for older men with lower base testosterone levels to begin with.
Grenade AT4 does go further than we expected towards transforming your body’s anabolic environment so if you’re looking to maintain the healthiest possible testosterone levels and give father time the old one-finger salute, it’s a pretty decent option.