Primeval Labs Sanctuary PCT Testosterone Booster Review

Primeval Labs Sanctuary PCT Testosterone Booster Review

Primeval Labs Sanctuary PCT Testosterone Booster Review First Look:

I have just recently come off a course of prohormones, and while I didn’t finish the full course because I felt ill, I definitely noticed that for approximately a couple of weeks I didn’t feel fully testosteroned up if that makes any sense?

I felt a little lackluster and didn’t even want to jack off, I could identify the problem but it still doesn’t make you feel any better.

It is like when you have the boozy blues after a night on the town pissed out of your face with the lads.

You know the next day’s depression is the booze talking but it doesn’t actually make you feel any better, and neither does that grilled cheese sandwich.

Normally, once identified, I tend to hit the TestoFuel which has a number of proven testosterone boosting ingredients that will naturally help your body stimulate more production to bring your testosterone levels back to normal and beyond.

This means you are able to maintain the muscle mass you recently gained.

PCT or Post Cycle Therapy supplements act just like testosterone boosters, they aim is to increase natural testosterone production once your cycle of steroids is over.

I have in the past come straight off the steroids and then didn’t use any thing post cycle and I felt dead inside. It was very bizarre.

This looks a bit naughty from Primeval labs. A bit underground, a bit serious and a bit hardcore.

Will it work as well as TestoFuel though?


5 alpha Hydroxy Laxogenin – 5-Hydroxy Laxogenin was discovered by an American scientist in 1996.

It was shown to possess an anabolic/androgenic ratio similar to one of the most efficient anabolic substances, in particular Anavar but without the side effects of liver toxicity or testing positive for steroidal therapy.

Until now there’s only one animal study about the function of 5a-Hydroxy Laxogenin. This is an old Russian research paper.

It is shown that 6-ketoderivatives of natural sapogenins display the anabolic activity and do not manifest any androgenic properties.

The compound 5a-Hydroxy Laxogenin produces an accelerated gain of weight in rats, and also an increase in the weight of the liver, heart, kidneys.

NAC (N-Acetyl-L-Cysteine) – Great for people with liver, heart and kidney problems but no evidence for boosting testosterone.

Bulbine Natalensis – A herb from Africa, this increases testosterone, however, it is also as toxic as a steroid cycle. 50mg per 1kg or 2.2lbs of body weight needs to be taken to be effective.

That means at approximately 92kg/202lbs I would need 4600mg per day.

Tribulus – Once again, the old tribulus raises its ugly head. And its head is fucking ugly. Like a medieval gargoyle.

The problem is that because this has been touted about for so long as a bit of a miracle plant extract used by the mysterious Eastern Bloc Olympic Athletes during the Cold War people have started to believe the hype and it is an easily recognizable ingredient the ill informed will have heard about down the gym.

The issue is that it has not been scientifically proven to raise testosterone levels in any shape or form.

In fact, in studies using elite professional Australian rugby players as participants Tribulus did not produce the large gains in strength or lean muscle mass that many manufacturers claim can be experienced.

Avoid like a medieval plague if you are looking for muscular gainz.

Atractylodes Macrocephala – A Chinese medicine which has no real evidence supporting any of its purported uses.

Magnesium – Research into magnesium supplementation also increased testosterone production in men.

Zinc – An aphrodisiac and Testosterone Booster.

Zinc is also very important for the functioning of the enzyme, hormone, and immune systems.In very high doses, zinc can act as an aromatase inhibitor and reduce estrogen levels.

It is also a potent antioxidant and can provide benefits for prostate issues.

L-Dopa (Macuna Pruriens) – This is actually good for treating people with Parkinsons. There’s a mixed bag of results for testosterone but look mainly positive.

Results have shown an increase in testosterone levels in infertile men, however, results are very limited for fertile men.

It is effective to reduce cortisol levels – high stress levels can harm testosterone production.

Maca Root – This Peruvian strain of ginseng is great for lifting libido and mood, however, when it comes to raising testosterone levels it has no effect at all.

No significant influences on testosterone in any tested demographic I’m afraid.

DIM (Diindolylmethane) – Diindolylmethane appears to promote a healthy balance of testosterone in the body and is found in vegetables such as broccoli.

Cruciferous vegetables which contain high levels of DIM such as broccoli are eaten by many professional athletes such as rugby league players for their benefits.

Vitamin D – A great Testosterone boosting vitamin that must be taken advantage of to trigger further production of Testosterone in your body.

However, there are two types of Vitamin D. There’s calciferol (vita

min D2) and cholecalciferol (vitamin D3) – we are only interested in cholecalciferol which is D3; this is the type our skin synthesizes from the sun and becomes a hormone which results in the increases in our testosterone.

Research by the US Library of Medicine has shown that testosterone productions are increased with Vitamin D3 supplementation.

BioPerine – The extract of piperine, called BioPerine®  in the patented form, has been clinically tested in the United States.

BioPerine®  significantly enhances the bioavailability of various supplement nutrients through increased absorption.


Take 7 capsules daily. That’s a massive number of capsules and to be taken all at once as well!

The best testosterone boosters out there recommend that the capsules are taken over the curse of the day to ensure your body gets a constant trickle of the ingredients.

Overall we are provided with a daily dose of 3435.02mg which is a good, solid amount.

Effects & Benefits:

There are 3 proven and useful ingredients here that will increase testosterone levels. These are often found in the best testosterone boosters and are the following:

  • Zinc
  • Magnesium
  • D3

Then there’s DIM which rather than stimulating testosterone levels to increase, protects levels by regulating estrogen with is the female hormone.

L-Dopa can reduce inflammation which also in turn inhibits testosterone production. It may also increase testosterone levels but this seems only to be effective for men who are infertile and infertile men only make up 12% of the global population according to a very generous estimate by the World Health Authority.

Bulbine also can increase testosterone levels but only in much higher doses than provided here, plus it can be toxic just like if you were taking steroids…and this is supposed to be helping your body recover from taking steroids.

NAC is good for helping people with liver, heart and kidney issues. This is helpful because long term steroid users can suffer from organ problems.


There’s only 3 proven and effective ingredients present that will increase testosterone levels.

This is low compared to other, effective and proven testosterone boosters which use a combination of 8 or more beneficial ingredients all working in harmony to stimulate more natural testosterone production.

Bulbine isn’t dosed high enough to be effective, but it also can be toxic so no benefit whatsoever here then.

A further 3 ingredients are not proven to offer any benefit and 5-Hydroxy Laxogenin could potentially be great but with only 1 study and that is not using human participants it is hard to judge effectiveness or safety.

$79.99 is a bit steep too!

Primeval Labs Sanctuary PCT Testosterone Booster Review Conclusion:

This only contains 3 ingredients when we are more commonly used to seeing 8 or more effective and proven testosterone stimulating ingredients.

As a result this would be a much better supplement if it contained the following ingredients which are sadly omitted:

  • K2
  • B12
  • DAA
  • Oyster
  • Fenugreek
  • Boron

It does include a few other ingredients that can regulate inflammation and estrogen and another that could raise testosterone levels in men who are infertile, so you will benefit if you are one of the estimated 12%.

However, then , there’s up to 4 untested or at least limited testing and proof means we are not entirely sure of their benefit.

It is good to see NAC that can help with organ health. This will especially be required when it has the toxic Bulbine included.

I personally would give this a wide birth, save your money ($79.99), and buy something effective.



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Ben BA(Hons), PGCert

Ben established this site to be a free resource in 2015. Since then it has gained over half a million visits. He has always been interested in sport and he started playing rugby at the age of 6 represented his town, county and school. Ben also enjoys cycling, has started skiing and is in the Army Reserve representing his Regiment as part of the 150 Regimental Shooting Team. He holds a bachelor's and postgraduate degree in sport exercise & nutrition.

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