R1sing Labs OverKill STIM Pre-Workout Overview/ Ingredient List

R1sing Labs was founded by KC “That 1 Leg Monster” Mitchell. KC lost his leg in 2010 while serving in the US Military. After he recovered from his injury, he began powerlifting. From his success as a powerlifter, he began a clothing line, that eventually spread into the development of a sports supplement brand. One of those products is a pre-workout supplement called OverKill STIM.


Judging by the formula, OverKill STIM was designed to give you an increase in energy, and to improve performance while you are working out. Each serving has 300mg of Caffeine and 75mg of DiCaffeine Malate. DiCaffeine Malate is made of 75% pure caffeine. So, one serving of OverKill Stim has 350mg of total caffeine. To top of the stim matrix, R1sing Labs added 100mg of Theobromine and 2mg of Alpha-Yohimbe. These two ingredients in combination with the 350mg of total caffeine should really give you a burst in energy.


What is interesting about the OverKill STIM formula is the lack of any added nitric oxide (NO) boosting ingredients. This is different than what you will find from most sports supplement brands. However, R1sing Labs does make a pure nitric oxide (NO) boosting pump product named Primitive PUMP. It appears that R1sing Labs is counting on you using these two supplements together.


What OverKill STIM lacks in nitric oxide (NO) boosting pump ingredients, it makes up for with some proven performance enhancing ingredients. They included 3,000mg of Beta Alanine, 2,000mg of Betaine (TMG), and 1,500mg of Creatine HCL. These three ingredients should give you a boost in performance and strength during your workouts.


OverKill STIM Pre-Workout appears to be exactly what the name implies. It is a pre-workout supplement designed to help give you more energy, and increase your performance while you are working out. Look out for our personal staff review of OverKill STIM. We will let you know how it really works.


Serving Size:

1 Scoop (12 grams)


Servings per Container






Recommended Use:

As a dietary supplement, Mix 1 scoop with 8-10 oz. of cold water. Consume 15 to 20 min before exercising. Do not take any other products that contain caffeine or any other stimulants while taking OVERKILL.



  • Delicious Pineapple
  • Refreshing Lemonade
  • Tasty Green Apple


Top Rated Flavor

Tasty Green Apple


Supplement Ingredients:


  • Niacin (as Niacin) – 15mg
  • Vitamin B6 (from Pyridoxine HCL) – 5mg
  • Vitamin B12 (as Methylcobalamin) – 50mcg
  • Calcium (from Calcium Silicate) – 25mg
  • Beta Alanine _ 3,000mg
  • Betaine (Trimethylglycine) – 2,000mg
  • Creatine HCL – 1,500mg
  • L-Taurine – 1,000mg
  • L-Tyrosine – 750mg
  • Caffeine – 300mg
  • Ashwagandha (Whithania somnifera) Root Extract (KSM-66)(Organic) – 300mg
  • L-Theanine – 200mg
  • DiCaffeine Malate – 75mg
  • Theobromine – 100mg
  • Pyridoxine HCL – 6mg
  • Rauwolscine (Alpha Yohimbe) – 2mg
  • L-Citrulline – 8000mg
  • Creatine Monohydrate – 5000mg
  • GlycerPump (Glycerol Powder) – 3,000mg
  • L-Tyrosine – 3000mg
  • Nitrosigine (Arginine inositol silicate) – 1500mg
  • AlphaSize (Alpha-Glyceryl Phosphoryl Choline) – 600mg
  • Vaso6 (Green Tea Extract)(From leaf) – 300mg
  • L-Norvaline – 250mg
  • Sodium (Himalayan Pink Sea Salt) – 125mg
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