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Dietitian-Formulated Cellular Nutrition
Youthful Cells. Effortless Energy. Better Life.
Your daily ritual to keep your cells acting young, your mind sharp, and your body deeply hydrated from the inside out. No added sugar. Zero bloat.
Formulated by a Registered DietitianClinical Doses, Full TransparencyNo Added Sugar, Zero BloatNon-GMO, Vegan, Gluten-Free
Two Formulas, One Daily Ritual.
Bundle and save
Core every morning. Fuel when you sweat. Save up to 28%.
Core30 sticks
Fuel15 sticks
Core · Daily Longevity Drink Mix
Target cellular aging at the source.
Years before you see the signs of aging, your cells start losing the energy they need to repair and thrive. Core replenishes those exact pathways in one crisp morning drink.
- 5g Micronized CreatineLean muscle tone, recovery, and cognitive support.
- NMN, CoQ10 & PQQBoosts NAD+ to power youthful cellular energy.
- L-Theanine & MagnesiumCalm, steady focus with zero caffeine or crash.
- Quercetin & ElectrolytesDaily cellular defense and deep absorption.
Shop CoreFrom $2.55 a day
Core · The Math
You don't need 5 pill bottles, 4 powders, and an IV drip.
Buying these ingredients separately costs nearly $200 a month and a crowded cabinet of supplements. Core puts all of it in one stick.
Fuel · Electrolyte Drink Mix
Rapid hydration for workouts, heat, saunas, and travel.
Water alone passes right through you when you're depleted. Fuel pairs pink Himalayan sea salt with organic coconut water to pull hydration straight into your cells, beating the post-sweat slump.
- Pink Himalayan Sea Salt750mg of sodium to replace what sweat takes out.
- Organic Coconut WaterPotassium and 3g carbs for fast absorption.
- No Added SugarSweetened with monk fruit. No aftertaste.
- Organic Fruit FlavorsCrisp, clean taste with nothing artificial.
Core is your daily foundation. Fuel is for the days you sweat.
Build your bundle
Core every morning. Fuel when you sweat.
Bundle both and save up to 28%. Choose your flavors below.
1
Pick your Core flavor
2
Pick your Fuel flavor
Two Simple Habits. Decades of Payoff.
Find your routine
Not sure where to start?
Answer four quick questions to find your routine.
Find your routine
Answer four quick questions to find your routine.
Your routine
Start with Core.
One stick every morning covers your creatine, NAD+ support, antioxidants, and baseline electrolytes. Add Fuel anytime for sweat days.
Start with Fuel.
One stick in 16 oz of water whenever you sweat. Add Core anytime for your daily longevity foundation.
Core every morning. Fuel when you sweat.
Core powers your cells every day. Fuel replenishes you when you sweat. Bundle both and save up to 28%.
Reviews
Core
Genuinely shocked
Genuinely shocked by how good it tastes. Flavors instead of just salty. And you feel amazing after drinking it. For me, taste and performance are all that matters. Huge fan.
AnonymousSeptember 2026
Fuel
Best electrolytes on the market.
Couldn't decide which flavor to get so I had to try all three. No skips. Cherry limeade, lemon lime, and my personal favorite salted watermelon were by far the best tasting electrolyte mixes I've tried to date. Not overly sweet or salty like other brands.
Verified reviewerAugust 2026
Core
Fantastic-tasting health benefit
Both the Summer Citrus and Blood Orange are so delicious, and the formula blends in my water bottle perfectly. No clumping. It's great getting all my electrolytes and creatine in such a yummy way, and I feel great taking it.
Kathy K.August 2026
Customer Reviews
Based on 6 reviews
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A
Tried it for week now and can see the difference in performance already I recommend this product
A
Genuinely shocked by how good it tastes. Flavors instead of just salty. And you feel amazing after drinking it. For me, taste and performance are all that matters. Huge fan.
A
Absolutely LOVE this all in one product. I used to take so many supplements to start my day. Core gives me the sustained energy I crave for busy days. It makes me feel balanced and eliminates a lot of guesswork around what my body needs. I struggle with hormone imbalance and this product helps jumpstart my system, additionally the flavors are AMAZING. Blood Orange is my fav.
m
Beyond the fact that CORE is like 10+ products I use to take separately all bundled into one stick, I really love the idea behind CORE. “Your best years are still ahead” is a belief I have always carried and it motivates me forward, and the fact is, the ingredients in CORE act as facilitator of that concept, proven by the research behind them. You can tell the SRC team really did their due diligence on this one. I’m excited to add CORE to my routine.
K
Fantastic flavors! Both the Summer Citrus and Blood Orange are so delicious - and the formula blends in my water bottle perfectly. No clumping. It’s great getting all my electrolytes and creatine in such a yummy way, and I feel great taking it!
Customer Reviews
Based on 6 reviews
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N
I used to feel terrible after just a few drinks no matter what - until I found SRC electrolytes. Now I take one before going out and wake up feeling completely fine. No headache, no nausea, nothing. On top of actually working, it tastes great and mixes perfectly with zero clumping. Wish I'd found these sooner, they're a non-negotiable part of my routine now.
S
Since using an SRC, I have experienced a reduced level and cramping while running marathons and I’ve even started to carry a second once my handheld bottle gets empty. I refill it with a second pack overall I’m completely satisfied with the product.
A
The lemon lime flavor is solid. I also like the packaging and description of ingredients, coming from someone who is very picky as to what goes into my body.
J
Big fan of the original blend (especially lemon lime), but the SRC team has outdone themselves with FUEL. Couldn't decide which flavor to get so I had to try all three. No skips… cherry limeade, lemon lime, and my personal favorite salted watermelon were by far the best tasting electrolyte mixes I’ve tried to date. Not overly sweet or salty like other brands; great blend of ingredients for both before and after a workout.
O
So good! It’s excellent for strenuous days when you’ve gone all in.
I also tried it in my recent trip to Europe and it really helped with jet lag.
Customer Reviews
Based on 6 reviews
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K
This is exactly what I was looking for and it’s amazing! The flavor is great and it saves me so much time in the morning to just throw the packet in with water. I love that it has creatine in the packets, no more scooping creatine and making my own concoctions. Kam the founder is the best and really cares about the product and it shows, best on the market!
K
I’m not a fitness junkie. In fact, I’ve struggled to find my fitness footing for most of my adult life. I originally tried SRC CORE & FUEL because entrepreneurship is hard, and I wanted to support launching SRC into the world.
But after actually using the products, I think there is something worth understanding about SRC, particularly CORE.
CORE isn’t really a hydration drink. I think of it more as a supplement routine in a drink packet. If you look at the price and compare it only with electrolyte products like LMNT or Liquid I.V., you may experience some sticker shock. That was certainly my first reaction.
But purchasing CORE makes more sense when you consider what you might otherwise be buying separately for your supplement cabinet. A serving includes creatine, NMN, CoQ10, PQQ, quercetin, L-theanine, magnesium, vitamin C, zinc, potassium, and sodium. At that point, the relevant question becomes less, “Why does this hydration packet cost so much?” and more, “What am I already spending—or willing to spend—each month on supplements?”
That’s an important distinction.
I’m not a health nut. I’m simply trying to become healthier and make better choices consistently. I’ve tried some of the other brands and have—literally—thrown them out because I didn’t like how they made me feel when consumed on an empty stomach (particularly Liquid I.V.).
I haven’t had any issues with SRC. In fact, I really enjoy drinking it. The Blood Orange CORE is particularly tasty. And while the zero added sugar is a bit of an adjustment, it is actually helping me with my effort to reduce my added sugar intake -- speaking as someone with a *serious* sweet tooth.
I’m too early in my use of SRC to make sweeping claims about long-term health benefits. I may come back and upgrade my review after I have a few months of use under my belt.
What I can say now is much simpler: SRC makes one part of trying to live healthier remarkably easy.
I mix a packet with 32 oz. of water instead of the recommended 16 oz., which gives me a lighter flavor. It tastes good, there’s no added sugar, and I’ve knocked out several supplements at once.
It’s not inexpensive. But if you have the means and you’re already spending money on supplements (or trying to simplify your health routine), I think CORE is worth considering.
For me, the convenience, taste, and simplicity have made the price worth it.
(Full disclosure: I haven't sweated enough to fully review FUEL!)
M
src has quickly become my favorite electrolytes for after a run or hot yoga class!
A
Amazing. Core has improved my daily concentration and word-day efficiency. Fuel is a perfect electrolyte drink for any and all efforts (I've done workouts and races ranging from 60mins to 24+hrs).
As an ultrarunner, I used to have problems with electrolytes during long efforts, especially in the heat and humidity. I switched to SRC and have had exactly ZERO issues since. No cramps, no light headedness, nothing.
K
Highly recommend! Great flavor - tastes natural and not overly sweet or artificial. Solid ingredients. Fuel has everything I need to keep me well hydrate for super sweaty sessions. Core helps me start the day off right and has simplified my supplement routine. It is clear a lot of thought went into this product.
Start now. Not later.
Age on Your Own Terms.
Stay consistent every day, and ten years from now you'll feel even better than you do right now.
