Signature Amino Plus Energy

Signature Amino Plus Energy

Amino Acids and Caffeine for Energy, Focus, and Recovery*
Use Pre- or Post-Workout
7.3 out of 10 (28 Reviews)
1 Size
30 Servings
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2 Flavors
Blue Raspberry
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Price: $17.99 ($0.60 / Serving)
Flavor Rating: 5.6

Product Overview Signature Amino Plus ENergy

Amino acids help stimulate protein synthesis and reduce protein breakdown.* Our formula provides a serious dose of BCAAs (5 grams!), plus caffeine and electrolytes. Sip this refreshing beverage pre-workout to fuel your training, post-workout to speed muscle recovery, or anytime your day could use some energy.* Signature Amino Plus ENergy tub

2:1:1 Branched-Chain Amino Acids (BCAAs)

Made up of three essential amino acids — leucine, isoleucine, and valine — BCAAs promote growth and recovery.* A 2:1:1 ratio delivers more muscle-building leucine.*

Green Tea

Supplementing with caffeine has been shown to increase focus and improve workout performance. This natural caffeine source also contains metabolism-boosting EGCG.*


Electrolytes replenish your hydration stores, which helps support muscle function during your workout and prime your body for the next round.*

Carnosyn® Beta-Alanine

Beta-alanine acts as a buffer between fatigue-promoting lactic acid and your muscles by producing carnosine, which keeps lactic acid in check during intense workouts.*


L-Arginine contributes to your body’s production of nitric oxide, a vasodilator. When your blood vessels are dilated, your body is better able to circulate oxygen and other nutrients to muscles.*


This amino acid can help reduce muscle fatigue during exercise.* Athlete

A signature is a promise. A symbol of your identity. Your mark on the world. In 1999, was founded on a single promise: Trust. It’s who we are and it’s in our blood. Our Signature line is built on the same promise. Every product is no-BS, transparent, filler-free, and formulated with effective doses of research-backed ingredients you can trust. We create the highest quality supplements, so you can focus on leaving a mark of your own.


Signature products are formulated with high quality ingredients at effective doses that we’re proud to share with you. We don’t hide anything in a “proprietary blend”, so you always know exactly what you’re putting into your body.


An effective dose is the amount of an ingredient that has been shown to deliver results. Some supplement brands add a sprinkle of an ingredient just so they can say it’s in the product. Signature supplements always include enough to get the job done.


Trendy, flash-in-the-pan ingredients come and go. But time-tested, gym-proven ingredients are what you need to help you achieve your fitness goals. That’s what you’ll find in Signature products because that’s what works.


Ratings & Reviews

Overall Rating
28 Ratings
Verified Buyer Rating
24 Ratings
Average Flavor Rating
2 Flavors
Top Rated Flavor
Green Apple
By clicking the button above, you agree to entering the Reviews section. Products in the Store are not intended to diagnose, treat, cure, or prevent any disease.
Verified Buyer
  • 3 Blue Raspberry

Great energy boost to power through a workout. I’ll continue to use but hopefully they fix the flavor. Just chug it and don’t focus on the taste.

Verified Buyer
  • 3 Blue Raspberry

This product definitely helped wake me up in the mornings, but the taste was horrible. I have to almost double the amount of water that it calls for, and even after drinking some of it, I continue to add water so it will help with the taste. It's a very bitter, sour taste. Might try the green apple next

Verified Buyer

Tastes like cough medicine. I was hoping it was similar to Optimum Nutrition's Amino Energy.

Verified Buyer
  • 9 Blue Raspberry

This is an awesome product...I use this in the gallon of water I carry around with me...Its like im drinking a juice drink without the sugar but with added protein synthesis hahahahaha

Verified Buyer
  • 10 Green Apple

Love this stuff! Green Apple taste great!

Verified Buyer
  • 4 Green Apple

Not to bad mixes well sometimes I have a bad after taste but overall happy with the product and price.

Verified Buyer

I usually use ON Amino Energy and found this to be a suitable replacement since I got it on sale and it ended up being significantly cheaper. I will continue to use this product but would love to see more flavors added such as Orange since my favorite ON flavor is Orange Cooler. I use this product for morning wake up, afternoon pick up, or cardio pre workout.

Verified Buyer
  • 8 Green Apple

So far so good, it does give you a bit of energy for your workouts. The green apple tastes good at first but you quickly get a bitter after taste.

Verified Buyer
  • 2 Green Apple

The product itself is great! Love the transparent labeling and the fact that it has only really what you need and ingredients that are backed by real science. I use it as a pre-workout because it has less caffeine than most pre-workouts, and I just add creatine, citrulline, and beta alanine. I must call out the flavor on this though. With 10 oz of water, it is basically undrinkable. It is insanely bitter and just all around bad. With ~20 oz of water its just bad, but palatable. They definitely need to go back to the drawing board for the flavor. Otherwise its a good product!

  • 8 Blue Raspberry

I thought the product was great for what I needed it for. I take it to start my day and find it to be perfect. Wouldn't use it as a preworkout but for what it is it's great. Taste was ok.

Verified Buyer

I used this for almost a week now, on an almost daily basis. The PROFILE is pretty decent for an Amino, and the PRICE is right. What I had a major issue with was the TASTE! It took me at least 4 tries to find a mixture that tasted ok. For my taste, I found that mixing 34oz of filtered water with 2 scoops gave me a pretty decent taste. Any less water and this will taste very bitter and also quite chemical. The taste formula needs to be improved A LOT, or at least the label should mention that users should experiment with different amounts of water. Using 10oz of water with each scoop as suggested by the label ... no way!

Verified Buyer
  • 10 Green Apple

This is the perfect product for me! I don't typically take preworkouts because I don't like the itchy, tingly feeling but this product gives me ENERGY and it aids in muscle recovery. I drink it pre, intra, and post workout!

Verified Buyer
  • 9 Green Apple

Solid choice, room for improvement.

Verified Buyer

I love this grape flavor!! It is nice and sour, and just the right amount of sweetness for me!!

Verified Buyer
  • 1 Blue Raspberry

OK, so the early reviews for this product which were mostly 10/10 are clearly fake reviews meant to boost the rating to help with sales. The flavor is atrocious... like really, really, really bad. If you mix it according to the 10oz of water the taste is so strong that it is not even drinkable. In order to force this stuff down (hey... I am cheap, what can I say...) I have to pretty much double the amount of water it calls for. It doesn't matter what the ingredients are if you can't drink it. Will be moving on to another brand as soon as I possibly can.

30 Servings
30 Servings
$0.60 Per Serving

What's in Signature Amino Plus Energy

Serving Size 1 scoop (10g)
Servings Per Container30
Amount Per Serving % Daily Value
Sodium (as sodium chloride) 100 mg 4%
Potassium (as potassium citrate) 100 mg 3%
Calcium (as calcium chloride) 25 mg 3%
Magnesium (as magnesium oxide) 25 mg 6%
Chloride (as sodium and calcium chloride) 198 mg 6%
BCAA Blend 2:1:1 5 g
CarnoSyn® Beta-Alanine 750 mg
Micronized Taurine 500 mg
Micronized L-Arginine 500 mg
Caffeine (from caffeine anhydrous and green tea extract) 100 mg
Green Tea Extract (Std. to 25% EGCG and 12% Caffeine) 100 mg
† Daily Value not established
Other Ingredients:
Citric Acid, Malic Acid, Natural and Artificial Flavor, Acesulfame Potassium, Sucralose, FD&C Blue No. 1

Directions For Signature Amino Plus Energy: Mix 1 level scoop with 10 ounces of water. 

Warnings: Consult your physician before using this product if you're taking any medications or are under a physician's care for a medical condition. Not for use for those under the age of 18 or women that are pregnant, trying to get pregnant or nursing. Do not consume caffeine from other sources while taking this product as too much caffeine may cause nervousness, irritability, sleeplessness, and occasionally rapid heartbeat. Do not combine with alcohol. Consume as part of a healthy diet and exercise program, and drink at least 6-8 glasses of water per day, exercising may increase the need for extra fluids. This product contains 100mg of caffeine a serving. Those with a medical condition and those taking medication should consult a healthcare professional before use. Do not exceed 3 servings within 24 hour period.

* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.