Best Sugar-Free Pre-Workout Powders of 2026

"I've found that C4 Original consistently provides a strong, steady energy boost without any jitters or crash. The flavors, especially strawberry and watermelon, are delicious and sugar-free, making it enjoyable to drink before my workouts. I really appreciate the inclusion of beta-alanine and creatine for enhanced performance, and the 30 servings last as promised. I definitely recommend it to anyone looking to improve their workouts."

"After years of trying different pre-workouts, I keep coming back to C4 Original. The grape flavor is sweet but not overly artificial, and it dissolves perfectly in water. What stands out to me is the dependable, clean energy that kicks in within 20–30 minutes—no jitters, no crash. I also notice an improvement in muscular endurance and stamina during longer sets, plus a mild pump which is motivating. It's a solid, beginner-friendly option that's easy on the budget and does exactly what I need."

"When I use C4, I feel more awake and ready to hit the gym, even on days when motivation is low. The tingling from the beta-alanine is noticeable but not bothersome, and there's no weird aftertaste. The energy boost is consistent and helps me push harder, and I never experience a harsh crash after. It's become my go-to for an extra push during workouts."

"I've tried quite a few pre-workouts, including oxyshred and the standard caffeine blends, but this is the only one that actually works for me—no fatigue or weird jitters at all. I especially appreciate the strawberry mango and raspberry lemonade flavors, which taste great without any harsh aftertaste. The energy boost is strong and steady thanks to the green tea extract, and it's seriously affordable. I just wish the ingredients list was clearer, but overall, it's an amazing product that I keep repurchasing."

"This is hands down the best pre-workout I've ever had. My fiancé and I are gym regulars and have tried just about everything out there, but nothing compares to this. The energy feels clean, the ingredients are solid, and my workouts are always on point with a great pump. We'll definitely be sticking with this one for the long haul!"

"The taste is fantastic and I get great results every session. The only tiny downside is that it doesn’t dissolve completely in cold water, but blending with a little warm water first solves that easily. Otherwise, it’s a winner!"

"I've been using this pre-workout for over two years, and it's absolutely my favorite for daily energy. I mix two scoops with water in the morning, and it gives me just the right boost to start my day—no jitters or crash at all. The fruit punch flavor tastes fantastic and dissolves easily. I think it's well worth the price for the quality and consistency."

"As someone who gets anxious from most energy drinks, I was shocked by how well this works for me. No tingles, no racing heart, and no crash—just a smooth, effective lift that lets me push harder during workouts. The flavor is decent, but for me, it's the lack of anxiety and steady energy that's a real game changer."

"I've tried a lot of sports drinks and usually can't stand the flavors, but the watermelon flavor here is actually great! It mixes perfectly, gives just enough of a boost without any jitters or crash, and leaves no weird aftertaste. I'm excited to try more flavors and make this my new go-to pre-workout."

"I'm amazed by how spot-on the Green Apple flavor is—it tastes just like the classic candy, crisp and refreshing without being too sweet or leaving any weird aftertaste. The zero sugar and 200mg caffeine give me a strong, clean boost that keeps me motivated through my workouts. Plus, the beta alanine tingle lets me know it's working. I love the carbonated feel, and the 12-pack is super convenient. Definitely a top pick for anyone wanting a tasty, effective energy drink."

"Having tried the four-flavor mix, I'm honestly impressed—each flavor is solid, but blueberry is my favorite. It's refreshing, not overly sweet, and delivers a clean energy kick without a crash. I reach for these on early mornings, during workouts, or whenever I need an extra push. Great taste and dependable energy—totally worth buying again!"

"For me, C4 is the best energy drink out there. The energy boost is fast and long-lasting, with no jitters or crash. I love how crisp and not overly sweet the flavors are, and it really keeps me focused during workouts. If you want an energy drink that actually delivers, C4 is the real deal!"

"As someone who’s been using pre-workouts with at least 300mg of caffeine, I really appreciate the balanced energy and lasting focus I get from this product. The clean formula and transparency are a huge plus—no fillers or additives. While the Black Cherry flavor has a medicinal aftertaste, I got used to it, and the benefits far outweigh the taste for me. No crash, no stomach issues, and 30 genuinely high-quality servings. If you like a smooth, steady buzz and real results, give this a try."

"I’ve tested a lot of pre-workouts, and this one delivers sustained energy for intense workouts without leaving me exhausted or jittery. The muscle pumps and recovery are noticeable, and I don’t get that tingly sensation some pre-workouts cause. The bitterness of the flavor isn’t for everyone, but it’s not overly sweet, which I like since there are no artificial sweeteners. Overall, it exceeded my expectations and I’ll definitely order again."

"I’ve been using Transparent Labs Bulk Black Pre-Workout for several weeks, and it’s now my go-to for high-intensity training. The combination of 325mg caffeine, 8g citrulline malate, and 4g beta-alanine gives me a powerful energy boost and great muscle pumps without the crash or jitters. I love that it’s naturally sweetened and free from artificial additives. The only downside is the bitter taste—the Black Cherry flavor is tough to get down, and I experienced some stomach discomfort. Still, the performance gains make it worth it."

"I find that this pre-workout gives me steady energy and sharp focus throughout my physically demanding mornings at work. The flavor reminds me of Hawaiian Punch, which makes it easy to drink."

"This pre-workout mixes really well with water—no clumps or powdery residue. The taste is delicious, and I’ve noticed a clear boost in both my energy and focus at the gym. No jitters or shakes, just a good sweat. Great value for the price!"

"The taste is similar to an apple Jolly Rancher—tart at first, but enjoyable. I experienced a noticeable increase in energy. For what you pay, it’s a great deal."

"I've been using C4 pre-workout for years and it's the best fit for me. I appreciate that it gives me a solid boost without jitters. Buying online saves me money, and with Prime, I get it in just two days!"

"As someone who's been lifting for over 20 years, this pre-workout is top-notch. It reminds me of the old school formulas that really enhance my energy and focus. I often purchase it for my friends too!"

"I find this pre-workout to be very effective and a great value. The full serving was too much for me, causing some nausea, but after switching to half a scoop, I still get energy without the jitters. I've learned it's 300 mg of caffeine per serving, which is quite a bit!"

"As a full-time teacher and mom of four, my only workout time is before sunrise. This pre-workout has completely transformed my routine—I’m able to power through much longer, more intense sessions thanks to the significant energy boost and increased stamina. The powder dissolves perfectly with no chalkiness, and while there’s a quick tingly feeling, I got used to it fast. Plus, the Cosmic Stardust flavor seriously tastes like liquid candy!"

"I’ve tried several pre-workouts, but Alani Nu really stands out. The taste is amazing and not overly artificial, and it gives me that focused, motivated energy I need without overwhelming jitters or crashes. I love the slight tingle—feels like it’s working! Mixes easily, and I genuinely look forward to using it before every workout."

"I was nervous to try my first pre-workout, but I’m glad I did. No jitters, and the flavor is totally bearable—reminds me of a classic energy drink. I did notice some bloating, which I later realized might be from certain sweeteners, but overall the consistent boost and easy mixing make it a quality product for my workouts."

"After trying countless pre-workouts over the years, this one stands out for its clean ingredient list and reliable energy boost. I don’t get any jitters, just steady focus, and I appreciate that there’s no sugar or artificial sweeteners. The taste isn’t great on its own, but mixing it with juice or another drink makes it manageable. Overall, it’s become my go-to for morning workouts."

"As someone who’s careful about what goes into my body, I love that this pre-workout is free of additives, fillers, and artificial flavors. The small scoop size surprised me, but it still packs plenty of energy to get me through long runs and strength training. I do notice a bit of tingling from the beta-alanine, which I actually appreciate, but the flavor is not pleasant—definitely best taken with something flavored."

"I needed something to help me get moving for at-home workouts, and Naked Energy has been perfect for giving me a smooth, sustained boost. I mix it with water and chug it down even though the taste isn’t great, because I value the clean formula and lack of added sugar. The tingling sensation was unexpected at first, but now I know it means it’s working. I feel energized and ready to go, with zero jitters."