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⚡ Unlock your day with Black Jax — energy that commands attention!
Stacker 2 Black Jax is a potent herbal dietary supplement featuring 170mg of caffeine per capsule combined with a proprietary blend of natural stimulants like Yohimbine, Yerba Mate, Guarana, and Kola Nut, plus metabolism-boosting capsaicin. Packaged in a convenient 20-capsule supply, it’s designed for controlled, effective energy support favored by professionals seeking sharp focus and vitality.
| ASIN | B000RZAJOA |
| Best Sellers Rank | #74,336 in Health & Household ( See Top 100 in Health & Household ) #3,240 in Blended Vitamin & Mineral Supplements |
| Customer Reviews | 4.4 4.4 out of 5 stars (449) |
| Date First Available | December 5, 2006 |
| Is Discontinued By Manufacturer | No |
| Manufacturer | NVE PHARMACEUTICALS |
| Product Dimensions | 4.96 x 1.61 x 1.5 inches; 0.32 ounces |
E**C
They work!
These things are great for some excited energy! I don’t like taking the entire amount of one capsule so I don’t get the sweaty jitters. So I always dump about 1/4 of it out
F**T
Never take 2
Great for energy boost and appetite suppression but NEVER take 2 you will shake, be nauseous and flushed and not be able to function! Best to take AFTER eating or may make you sick
P**A
Strong
I personally love black jack. Gives me tons of energy and I get things done and talk a lot. However if you are sensitive to caffeine I DO NOT RECOMMEND IT! IT IS VERY STRONG AND CAN BRING ON SHAKES AND POSSIBLE PANIC ATTACKS If you tolerate it well it's fabulous.
K**.
good product
convenient to have it delivered
B**E
Good product
Good for energizing a tough workout.
A**E
Not a coffee fan?
I have one pill at my bedside with water ready to take after I hit snooze on my alarm. It puts the kick in my step that I need to keep sluggish delay from my morning routines. I skip days when unnecessary to avoid tolerance and dependence.
C**S
Great energy but not for intense exercise!!
I received my Stacker 2 Black Jacks in the mail today, I was very excited about trying them because i have been buying the Stacker 2 energy shots over and over again for a while, (not to expensive but after a while adds up ) I ate and took one before I played basketball and i felt great. it gave me energy that lasted the whole time i played, So me and a friend decided after we were done playing basketball to go running. So I said ok but first I went home to eat, and then I took another Black Jack energy pill. At the beginning of the run everything was great but after a few minutes into the run I started to feel a little sick to my stomach. I paid this no mind and continued to run. Coming up to the end of the run it started to get worse but i figured it was just mostly fatigue kicking in and continued to run. I had made it to the end which was a quarter mile sprint and then I knew something was wrong my friend continued. I turned a corner off the side walk and vomited in an alley to avoid throwing up on the side walk, but after I spilled my lunch all over the place i got back to the sprint and finished. It could have been where I had took two of them in one day but the one before was great for playing basketball. So in this review for my experience if you want something to get you going for the day to wake you up or for mild excercize such as basketball, lifting weights, or anything like that you should be fine, but as for running or jogging or any type of hard intense cardio I wouldn't use this product. I would also recommend only taking one of these bad boys a day. From my experience more than one could make you sick. however everyone's body's works differently. So for me i'm only going to take one a day and do less intense excercize while taking this Supplement Great energy, but don't push yourself while using it you could get sick. But overall i do recommend to for energy. I give it 3 out of 5 stars.
B**6
My Favorite Stimulant
These are by far my favorite "pick me up". Easy to swallow. No aftertaste. No jittery feeling (though my nose does run once they kick in). I like the herbal ingredients, nothing harsh. Kicks in about 10 minutes after taking them (can be quicker if you have an empty stomach). I go from needing a nap at my desk to ready to get through the day in a matter of minutes.