Updated May 11th 23
This is one of the worst testosterone boosters we've come across, ultimately we're actually left quite confused by whoever put the Six Star Testosterone Booster ingredients list together. It's pretty much a slap dash collection of relatively random ingredients thrown into a capsule with testosterone booster stuck on the side. And the one thing they do get right, boron, isn't actually in a high enough dosage to be effective. We're reticent to even call six star testosterone booster a test supplement, but, they seem to think it should be branded as one so we'll review it as such.
It misses out on pretty much every ingredient that we'd want to see in six star testosterone booster, ashwagandha, fenugreek, DAA, ginseng or any of the vitamins and minerals that are actually related to testosterone production, such as D, zinc and magnesium. In short, don't waste your money on six star testosterone booster, you'd be far better off getting anything from our best testosterone boosters list. To make matters worse they come in a very misleading 15 day supply, whereas most supplements come in 30 days. This leads to a rather deceptive pricing system, with the product really costing double what a lot of customers assume. (We found a lot of complaints about this).
Although if you want a recommendation for a quick catch all supplement that covers all the bases then try Prime Male , it contains the aforementioned actual testosterone boosters, and has a dosage of Boron (10mg) that is actually effective.
We were pretty surprised to see that a lot of the six star testosterone booster reviews were incredibly positive. We personally noticed a noticeable decrease in performance when swapping from our normal test boosters to six star, so assumed that people wouldn't like it all too much. So, we started reading through the several 1000 reviews that were on amazon.
That's where it got weird, most 4 and 5 star reviews actually read a bit negatively. Saying it produced little results (a minor boost in energy) or complaining about the bottle size. We're not saying that 1000s of reviews repeating the same negative points should all be ranked at 5*, but it wouldn't be the first time we've seen fake reviews being generated by copying real ones. As a result, it's quite likely that there were a lot more negative 6 star testosterone booster reviews than it would appear, which makes their name and the customer reviews of six star test somewhat ironic.
The most commonly asked questions we saw when researching pro nutrition six star testosterone boosters
The ingredients in six star testosterone boosters are in such low dosages, there shouldn't be any side effects, this does also mean, that they won't work.
If you must take Six Star, for some reason, then we recommend that you take the two pills with food to avoid any mild stomach upset which could occur.
Calcium 50mg - 50mg isn't really going to do much, there are some studies that show calcium supplementation can boost testosterone production,  but the minimum recommended daily intake is 2500mg, so we don't think that supplementing for such as small amount is all too likely to do much. We're not off to a good start with Six Star.
Sodium 5mg - There have been some studies on rats that show sodium can boost testosterone production, but nothing that actually shows this would work for humans. Rhodiola Extract 386mg - There's potentially some benefit to this, although current studies are inconclusive and only show very minimal testosterone gains as compared to a placebo. 
Rhodiola rosea seems to have a more pronounced effect on cortisol, which does lower testosterone, but unless you're currently under high stress it won't likely do anything. The one positive thing we can say about pro nutrition six star testosterone booster is that at least this is within the effective dosage range. So this would explain at least some positive reviews as people who have taken six star could then go on to see an uplift in mood, which could of course lead to them to think the supplement is working as described.
Ginkgo Extract 2.7mg - Once again, in relation to testosterone levels has only been shown in rat studies and even then it was 50mg/kilo of body weight to see results. We're not sure what 2.7mg is supposed to do.  Again a pointless ingredient.
Boron Citrate 100mg - This is actually only 5mg of actual boron, the problem with the six star testosterone booster dosage is that we'd like to see is at least 8mg (usually about 9-10mg for the average sized man) for it to actually have any notable impact on test levels.  That's not to say it won't do anything at all, but considering this is as close to getting anything right as they come, it's not great. Six star testosterone booster came close to getting something right here. But, still managed to trip at the last hurdle. And Boron is a really good ingredient, not only has it been shown to raise test levels, but seperate studies have shown that it can improve lean body mass gains over 7 weeks even in trained individuals with healthy testosterone levels  which makes it even more of a shame that it's incorrectly dosed.
All in all six star testosterone booster could score lower, but only just. And that's simply due to the fact that it should improve mood which is of course one of the symptoms that many people will be trying to treat. It's just not going to do anything else.
Six Star Testosterone Boosters are awful for what they claim to do. Most of the ingredient lack any human clinical study and even in animals are barely effective. These are not good testosterone boosters, they won't improve athletic performance and honestly we're shocked that they market themselves as this type of supplement.
If you're looking for something that will actually help improve athletic performance, boost muscle growth, and help you maintain peak testosterone, six star isn't for you. We have a list of effective testosterone booster supplements and what goals they're best designed for or alternatively if you're looking for a good all rounder then we recommend you check out Prime Male.
1 - https://pubmed.ncbi.nlm.nih.gov/19099204/
2 - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6230218/
3 - https://pubmed.ncbi.nlm.nih.gov/18001735/
5 - https://pubmed.ncbi.nlm.nih.gov/8508192/