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 haven’t had much luck with ‘hybrid’ products in the past, so we’re hoping that Fierce with T-Drive will change our mind about them.

It’s 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 we’ll check that out in the next section for you.

But first, we’ll tell you more about the company behind it…

Who are SAN Nutrition? 

It’s refreshing to see a company’s ‘about us’ page that actually is filled with useful information; you’d be surprised by how many times we’ve 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 we’re excited to see how good Fierce with T-Drive is. So let’s 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 we’ll be analyzing for you in this review. This isn’t a bad number of nutrients to have in 1 product, as companies can still dose them effectively without overspending.

From first glance, we’re glad to see that SAN Nutrition haven’t added any proprietary blends in Fierce with T-Drive; meaning you can see the exact dosages of each ingredient inside.

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

Anyway, we’ll explain everything in more detail as we take you through each ingredient inside Fierce with T-Drive. By the end of this review, you’ll know how safe and effective this pre-workout/test booster hybrid really is.


Here’s Everything You Need To Know:

Vitamin D3

As we’ve 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 it’s been seriously under-dosed here.

For this reason, Vitamin D3 isn’t likely to work in Fierce with T-Drive.

Not only that, if you’re 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). They’re 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 doesn’t allow you to do this.

For this reason, as BCAAs aren’t going to break your wallet to buy separately, we prefer doing just that. But in fairness, it’s still a good addition to Fierce with T-Drive here.

Citrulline Malate 

We’re 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 it’s able to enhance your muscle pumps when dosed correctly.

So it’s 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 won’t be fully effective for this reason. However, it’s not the worse dosage we’ve seen, so it’ll 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 it’s proven to work.

We’re 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 won’t be as effective on its own, as it would be when consumed alongside numerous tried-and-tested T-Boosting nutrients.

Ultimately, we’ll 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 it’s shown to reduce muscular fatigue & damage, while improving your focus too.

We’re 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 it’s most useful when added to nootropic supplements.

However, it’s not really needed in pre-workout supplements, as improvements in memory aren’t exactly needed in the gym (unless you frequently forget your wife’s 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, it’s 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 you’ll be a risk from jitters and energy crashes.

For this reason, we wouldn’t recommend consuming this amount of Caffeine if you’re sensitive to it. But if you consume 4-6 cups of black coffee per day, you’ll probably survive.

Coleus Forskohlii Extract

This is an interesting ingredient, as it’s only recently started being added to supplements.

What does it do? Well, it’s 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 hasn’t 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, we’ll update this review).


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

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

So as it doesn’t improve your performance in the gym, we’ll consider this as another ‘bonus’ addition to Fierce with T-Drive here.


Yohimbine is definitely the worst addition to Fierce with T-Drive, and there’s 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 it’s shown to promote fat loss; as this isn’t a fat burner supplement, it’s 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, we’ll 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.

Here’s 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

We’re disappointed that SAN Nutrition added Yohimbine, as there’s 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 that’s 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, it’s 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 we’ve seen; SAN Nutrition really did their homework and added some great nutrients, but we’re still not convinced that it’ll 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 you’re simply aiming to improve your performance in the gym, get a specialist pre-workout supplement.


See The Best Pre-Workouts This Year!

Here’s the best natural pre-workouts on the market for:

  • Energy Boosts 
  • Enhanced Strength & Endurance 
  • Increased Focus
  • Skin-Splitting Muscle Pumps

Show Me The Full List!


See The Best Testosterone Boosters This Year!

Here’s the best natural testosterone boosters on the market for:

  • Faster Muscle Gains
  • Quicker Recovery Time
  • Decreased Belly Fat
  • Enhanced Energy & Sex Drive

Click Here to See the Full List!


Leave a Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.