SAN Nutrition Fierce with T-Drive Review


  • BCAAs can help preserve muscle mass while training
  • Optimal dosage of D-Aspartic Acid
  • L-Tyrosine can boost focus


  • Citrulline Malate slightly under-dosed
  • Big dosage of Caffeine Anhydrous (can cause jitters)
  • Yohimbine known for causing numerous side effects
  • Missing key pre-workout nutrients (eg. Creatine Monohydrate)

See Your Best Options In Our
- Top 3 Pre-Workouts Page -


About The Product

Fierce with T-Drive is a pre-workout supplement made by SAN Nutrition, which is also designed to boost your testosterone levels too.

We havent had much luck with hybrid products in the past, so were hoping that Fierce with T-Drive will change our mind about them.

Its priced $52.99 (on sale at $37.09 at time of writing) for 25 serving containers and is available in 2 flavors - Atomic Green Apple, and Tropical Mango.

Sounds tasty, but what really matters is whether SAN Nutrition added safe and effective ingredients or not. So well check that out in the next section for you.

But first, well tell you more about the company behind it…

Who are SAN Nutrition? 

Its refreshing to see a companys about us page that actually is filled with useful information; youd be surprised by how many times weve seen useless pages before.

We learned that SAN Nutrition were founded in 1996 and are based in the USA. All of their products are cGMP certified too, so this also ticks our boxes.

Basically, we like what we see so far, so were excited to see how good Fierce with T-Drive is. So lets analyze the ingredients inside this pre-workout/testosterone booster hybrid below…

Fierce with T-Drive Ingredients Explained

Fierce with T-Drive contains 10 main ingredients that well be analyzing for you in this review. This isnt a bad number of nutrients to have in 1 product, as companies can still dose them effectively without overspending.

From first glance, were glad to see that SAN Nutrition havent added any proprietary blends in Fierce with T-Drive; meaning you can see the exact dosages of each ingredient inside.

However, were slightly concerned about the big dosage of Caffeine Anhydrous inside, along with the slightly under-dosed Citrulline Malate.

Anyway, well explain everything in more detail as we take you through each ingredient inside Fierce with T-Drive. By the end of this review, youll know how safe and effective this pre-workout/test booster hybrid really is.


Heres Everything You Need To Know:

Vitamin D3

As weve mentioned, Fierce with T-Drive is designed to be a test boosting pre-workout supplement, so SAN Nutrition have done their homework here.

Simply put, Vitamin D3 is the best nutrient when it comes to raising your T levels; countless studies have shown that it works, and offers countless other benefits to improve your general health too.

However, studies have also shown that you need to consume 5,000IU for Vitamin D3 to boost your testosterone levels; Fierce with T-Drive only contains 840IU, meaning its been seriously under-dosed here.

For this reason, Vitamin D3 isnt likely to work in Fierce with T-Drive.

Not only that, if youre main aim is to raise your T levels, then we recommend looking at specialist testosterone boosters instead.


Also known as Branched Chain Amino Acids, there are 3 of them (L-Leucine, L-Isoleucine & L-Valine). Theyre also found in protein powders and are known to promote muscle protein synthesis (gains), which is always a good thing.

However, we prefer being able to choose when to take BCAAs; having them in pre-workouts doesnt allow you to do this.

For this reason, as BCAAs arent going to break your wallet to buy separately, we prefer doing just that. But in fairness, its still a good addition to Fierce with T-Drive here.

Citrulline Malate 

Were happy that SAN Nutrition have clearly researched which ingredients to add into their supplements. Citrulline Malate is a key addition to any pre-workout, as its able to enhance your muscle pumps when dosed correctly.

So its important to know that 6,000mg is the optimal dosage for Citulline Malate; unfortunately though, SAN Nutrition have slightly under-dosed this nutrient in Fierce with T-Drive, by only adding 5,000mg.

Ultimately, the studies would point out that Citrulline Malate wont be fully effective for this reason. However, its not the worse dosage weve seen, so itll probably still deliver some effects in Fierce with T-Drive.

D-Aspartic Acid 

D-Aspartic Acid is one of the best nutrients you can find in testosterone boosters as its proven to work.

Were impressed that SAN Nutrition has added an optimal dosage of DAA in Fierce with T-Drive too (the most effective dosages of D-Aspartic Acid are between 2,000mg-3,000mg).

For this reason, we believe that DAA will have a positive effect on your T levels. But it wont be as effective on its own, as it would be when consumed alongside numerous tried-and-tested T-Boosting nutrients.

Ultimately, well repeat again that you should look at specialist testosterone boosters is this is your main goal. However, credit where credit is due, and SAN Nutrition has dosed D-Aspartic Acid correctly here.


L-Carnitine is a great addition to any pre-workout, as its shown to reduce muscular fatigue & damage, while improving your focus too.

Were actually impressed that SAN Nutrition have really done their homework while formulating Fierce with T-Drive, as L-Carnitine has also been added in an optimal dosage too.

Great work by SAN Nutrition here.



L-Tyrosine is known for its cognitive enhancing effects, which is why its most useful when added to nootropic supplements.

However, its not really needed in pre-workout supplements, as improvements in memory arent exactly needed in the gym (unless you frequently forget your wifes shopping list…)

Anyway, Caffeine Anhydrous offers enough boost in your focus to benefit your workout. So L-Tyrosine is more of a bonus addition to Fierce with T-Drive here.

Caffeine Anhydrous 

We just mentioned that Caffeine Anhydrous was able to boost your focus in the gym.

Well, its also useful for boosting your energy levels, strength and endurance too - making it a key pre-workout ingredient.

However, we always advice you to consume under 200mg per serving in pre-workouts, to stay safe from jittery side effects; unfortunately, Fierce with T-Drive contains 300mg, meaning youll be a risk from jitters and energy crashes.

For this reason, we wouldnt recommend consuming this amount of Caffeine if youre sensitive to it. But if you consume 4-6 cups of black coffee per day, youll probably survive.

Coleus Forskohlii Extract

This is an interesting ingredient, as its only recently started being added to supplements.

What does it do? Well, its believed to help raise your testosterone levels while promoting fat loss too - which would make it the ideal ingredient.

However, the bad news is that there hasnt been much research conducted on this nutrient yet. So we have to consider Coleus Forskohlii Extract as an unreliable ingredient at the moment (but if we see more evidence proving that it works, well update this review).


This is basically a patented form of Panax Notoginseng and Astragalus Membrenaceus.

What does it do? Well, its believed to enhance the absorption rate of supplements its added to.

So as it doesnt improve your performance in the gym, well consider this as another bonus addition to Fierce with T-Drive here.


Yohimbine is definitely the worst addition to Fierce with T-Drive, and theres really no need for it here.

Why? Because Yohimbine has been banned from certain countries (UK & Canada), due to causing numerous side effects.

Not only that, the reason why some risk taking Yohimbine is because its shown to promote fat loss; as this isnt a fat burner supplement, its not necessary in Fierce with T-Drive at all.

For this reason, we advise you to avoid supplements containing Yohimbine - to stay safe.


See Your Best Options In Our
- Top 3 Pre-Workouts Page -

Side Effects

There are 2 things in Fierce with T-Drive that can cause problems; the high dosage of Caffeine Anhydrous and Yohimbine.

In case you skimmed past the previous section, well give you a quick summary; Caffeine Anhydrous can cause jitters and energy crashes when consumed in large dosages, while Yohimbine has been banned in certain countries after causing numerous side effects.

Heres the potential side effects from taking Fierce with T-Drive: 

  • Jitters (over 200mg Caffeine Anhydrous per serving)
  • Energy Crashes (over 200mg Caffeine Anhydrous per serving)
  • High Blood Pressure (Yohimbine)
  • Anxiety (Yohimbine)
  • Rapid Heartbeat (Yohimbine)

Fierce with T-Drive Review Conclusion

Were disappointed that SAN Nutrition added Yohimbine, as theres simply no need for this ingredient to be here. While the big dosage of Caffeine Anhydrous also puts you at risk from side effects, this is definitely a more forgivable mistake thats easily made.

Simply put, if SAN Nutrition removed Yohimbine and reduced the Caffeine Anhydrous dosage, then Fierce with T-Drive would be a great product.

So as you can see, its the small things that can make a big difference with supplements.

In fact, Fierce with T-Drive might actually be the most successful hybrid product weve seen; SAN Nutrition really did their homework and added some great nutrients, but were still not convinced that itll have a big effect on your T levels.

Ultimately, we still believe that specialist supplements are your best options; if you want to raise your T levels, then look at testosterone boosters, or if youre simply aiming to improve your performance in the gym, get a specialist pre-workout supplement.

SAN Nutrition Fierce with T-Drive Review

Bottom Line

Fierce with T-Drive is better than many pre-workouts on the market, so its deserving of its 3.5 star rating here.

But its not going to compete with the best test boosters or pre-workouts on the market.

See The Best Pre-Workouts This Year!

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  • Faster Muscle Gains
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