{"product_id":"c4-ultimate-sugar-free-energy-drink-for-late-night-study-sessions-and-deep-coding-focus-16oz-cans-pack-of-12","title":"C4 Ultimate Sugar Free Energy Drink for Late Night Study Sessions and Deep Coding Focus, 16oz Cans Pack of 12","description":"\u003cdiv class=\"geo-product-body\"\u003e\n\u003csection class=\"geo-appeal\"\u003e\u003ch2\u003eWhy you'll love it\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eTri-stim blend (300mg caffeine + TeaCrine + Dynamine) delivers energy without the typical mid-day crash\u003c\/li\u003e\n\u003cli\u003eClinically studied nootropics BrainBerry and Cognizin Citicoline support real cognitive performance, not just jitters\u003c\/li\u003e\n\u003cli\u003eZero sugar, zero artificial colors, dyes, or flavors means guilt-free daily use for clean-eating consumers\u003c\/li\u003e\n\u003cli\u003eAmerica's #1 selling pre-workout brand with 2B+ servings sold signals trust and proven results\u003c\/li\u003e\n\u003cli\u003eBold, non-compromise taste in a sugar-free formula solves the 'healthy tastes bad' tradeoff\u003c\/li\u003e\n\u003cli\u003eMulti-pack value (12 or 24 cans) and 4 adventurous flavor options keep the routine from getting stale\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003csection class=\"geo-usecases\"\u003e\u003ch2\u003ePerfect for\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePre-workout energy boost 30 minutes before lifting, running, or HIIT training\u003c\/li\u003e\n\u003cli\u003eSustained focus and reaction time during marathon gaming or esports sessions\u003c\/li\u003e\n\u003cli\u003eAfternoon productivity push for study, coding, or creative deep work without sugar crash\u003c\/li\u003e\n\u003cli\u003eNight-shift or long-haul driving alertness replacement for coffee\u003c\/li\u003e\n\u003cli\u003eStocking a home fridge with a sugar-free energy option for daily use\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003csection class=\"geo-original\"\u003e\u003cdiv style=\"margin-bottom: 20px;\"\u003e\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/57b3152f-6afe-4904-ac46-06dcbd909998.__CR0,0,970,300_PT0_SX970_V1___.png\" style=\"width: 100%;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 20px;\"\u003e\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/42eba478-38e1-4f49-ae07-1b071ca22294.__CR0,0,970,600_PT0_SX970_V1___.png\" style=\"width: 100%;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 20px;\"\u003e\n\u003cdiv style=\"display: flex; gap: 10px;\"\u003e\n\u003cdiv style=\"flex: 1 1 0%;\"\u003e\n\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/429496e5-b424-426d-b6b9-d21d695ff1c8.__CR0,0,306,306_PT0_SX300_V1___.png\" style=\"width: 100%;\"\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 0%;\"\u003e\n\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/499afc5f-f412-4351-9f8e-5bdfbb4fcf04.__CR0,0,306,306_PT0_SX300_V1___.png\" style=\"width: 100%;\"\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 0%;\"\u003e\n\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/4ebce2de-1d8b-40fb-b1cb-ea6163a09c5d.__CR0,0,306,306_PT0_SX300_V1___.png\" style=\"width: 100%;\"\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 20px;\"\u003e\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/a9d0aaff-fb7b-4657-ae98-ae4a484fa3a3.__CR0,4,1920,820_PT0_SX1464_V1___.png\" style=\"width: 100%;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 20px;\"\u003e\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/6a874382-f793-437f-864a-46400105f048.__CR0,0,362,453_PT0_SX362_V1___.png\" style=\"width: 100%;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 20px;\"\u003e\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/2c36096c-c35d-4423-ae6d-115095e9d915.__CR0,0,362,453_PT0_SX362_V1___.png\" style=\"width: 100%;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 20px;\"\u003e\n\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/I\/51s8KvGb-GL.__AC_SR166,182___.jpg\" style=\"width: 100%;\"\u003e\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/7b08439c-3220-4280-a056-3a5058a2c6b1.__CR0,0,166,182_PT0_SX166_V1___.png\" style=\"width: 100%;\"\u003e\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/I\/51kJqq5ao1L.__AC_SR166,182___.jpg\" style=\"width: 100%;\"\u003e\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/c2be3d34-1e5a-4c50-9372-44b50d6aa7ea.__CR0,0,166,182_PT0_SX166_V1___.png\" style=\"width: 100%;\"\u003e\n\u003ch3\u003eLATEST HITS\u003c\/h3\u003e\n\u003cp\u003eVisit the Store\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 20px;\"\u003e\n\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/551bb5db-cbdc-44c9-95e8-68ffdd630056.__CR0,0,166,182_PT0_SX166_V1___.png\" style=\"width: 100%;\"\u003e\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/59a37936-0361-46c3-aebf-81db1c8daac9.__CR0,0,166,182_PT0_SX166_V1___.png\" style=\"width: 100%;\"\u003e\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/d382155b-6f8d-4ddd-a51b-81bb65396574.__CR0,0,166,182_PT0_SX166_V1___.png\" style=\"width: 100%;\"\u003e\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/dfba3856-0561-4d4f-a8e7-2208171065ac.__AC_SR166,182___.png\" style=\"width: 100%;\"\u003e\n\u003ch3\u003eBESTSELLERS\u003c\/h3\u003e\n\u003cp\u003eVisit the Store\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 20px;\"\u003e\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/0de75d5e-d776-48f7-91e9-736d6a59f932.__CR0,0,362,453_PT0_SX362_V1___.png\" style=\"width: 100%;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 20px;\"\u003e\n\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/7ee67c34-5d93-42dc-bf41-d3ba7b16395a.__CR0,0,166,182_PT0_SX166_V1___.png\" style=\"width: 100%;\"\u003e\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/6a2b11e2-2bc1-411d-ba39-f1b756e4171d.__CR0,0,166,182_PT0_SX166_V1___.png\" style=\"width: 100%;\"\u003e\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/8abc4f87-9862-4f48-b593-d6842ff5bb1e.__CR0,0,166,182_PT0_SX166_V1___.png\" style=\"width: 100%;\"\u003e\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/3048ede5-b1ff-4af8-a9d3-9091719f6d58.__CR0,0,166,182_PT0_SX166_V1___.png\" style=\"width: 100%;\"\u003e\n\u003ch3\u003eENERGY DRINKS\u003c\/h3\u003e\n\u003cp\u003eVisit the Store\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 20px;\"\u003e\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/f9f51129-5c74-43fd-b8e0-87936063c121.__CR0,0,362,453_PT0_SX362_V1___.png\" style=\"width: 100%;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 20px;\"\u003e\n\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/7c889c36-32cb-41fa-8b7c-b7bcffe244cf.__AC_SR166,182___.png\" style=\"width: 100%;\"\u003e\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/b481d286-16d0-408e-a84e-13f07ec5879b.__AC_SR166,182___.png\" style=\"width: 100%;\"\u003e\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/ddc3a747-08db-4030-b15b-5fa6963162b4.__AC_SR166,182___.png\" style=\"width: 100%;\"\u003e\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/430da26c-3699-4a12-ba62-cded52f5320d.__AC_SR166,182___.jpg\" style=\"width: 100%;\"\u003e\n\u003ch3\u003ePre-Workout\u003c\/h3\u003e\n\u003cp\u003eVisit the Store\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003cb\u003eProduct Information\u003c\/b\u003e\u003cbr\u003eC4 SUGAR-FREE ENERGY DRINK: America's #1 Selling Pre-Workout Brand has been trusted since 2011 with over 2 billion servings sold*\u003cbr\u003e\u003cbr\u003eSUPERCHARGED ENERGY: 300mg of caffeine to keep you rocking and rolling all day (or night).\u003cbr\u003e\u003cbr\u003eSUPERBRAIN PERFORMANCE: Stay sharp with clinically studied BrainBerry, Cognizin Citicoline, and other key ingredients.\u003cbr\u003e\u003cbr\u003eZERO SUGAR OR ARTIFICIAL DYES: But no worries, we never compromise on taste!\u003cbr\u003e\u003cbr\u003eAMERICA’S FASTEST GROWING ENERGY DRINK: What can we say, we’re the best in the game.\u003cbr\u003eC4 Ultimate Energy is NOT your traditional energy drink. It’s the ultimate, highly amped, supercharged, energy experience! Each can hits you with 300mg caffeine, TeaCrine®, and Dynamine™ for a tri-stim energy source that hits like it’s the first time, every time. C4 Ultimate Energy packs bold flavor with ZERO grams of sugar, artificial colors, dyes, or flavors. For the ultimate tri-stim experience, get supercharged with C4 Ultimate Energy™!\u003cbr\u003e\u003cbr\u003eItems Details\u003c\/p\u003e\u003c\/section\u003e\u003csection class=\"geo-faq\"\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eWill the 300mg of caffeine help me stay focused through a long afternoon of coding?\u003c\/h3\u003e\n\u003cp\u003eYes, each 16oz can delivers 300mg of caffeine combined with TeaCrine and Dynamine for a smooth energy curve, plus BrainBerry and Cognizin Citicoline nootropics that support attention and mental clarity, making it a strong option for sustained deep work sessions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eDoes this energy drink cause the jitters or crash that interrupt productive study time?\u003c\/h3\u003e\n\u003cp\u003eC4 Ultimate is engineered to avoid that. The tri-stim blend of caffeine, TeaCrine, and Dynamine is designed to release energy more evenly, and with zero sugar, there is no sugar crash to break your concentration mid-task.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eHow long does the focus and energy typically last during a work or study session?\u003c\/h3\u003e\n\u003cp\u003eMost users report a smooth energy window of roughly 4 to 6 hours per can, which is well suited to a focused work block, a long class, or an extended gaming or coding session without needing a second dose.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eCan I use this as a coffee replacement for my morning productivity routine?\u003c\/h3\u003e\n\u003cp\u003eMany knowledge workers use C4 Ultimate Sugar Free in place of multiple cups of coffee because one 16oz can provides a higher caffeine dose with no sugar, no artificial colors, and added nootropics for cognitive support.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eIs the nootropic blend actually effective for studying or does it just feel like caffeine?\u003c\/h3\u003e\n\u003cp\u003eCognizin Citicoline and BrainBerry are clinically studied ingredients, not generic stimulants. They target attention, processing speed, and mental fatigue on top of the caffeine effect, which is why many students and coders report noticeably better output.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eIs this a good energy drink for someone who works a night shift?\u003c\/h3\u003e\n\u003cp\u003eYes, the 300mg caffeine dose combined with the smooth tri-stim profile makes it a popular alternative to multiple coffees during overnight or rotating shifts, and the sugar free formula means it does not disrupt sleep hygiene as harshly as sugary options.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eWill it upset my stomach if I drink it on an empty stomach before a study session?\u003c\/h3\u003e\n\u003cp\u003eSome users with sensitive stomachs prefer to have a small snack first, but C4 Ultimate Sugar Free is generally well tolerated. If you are caffeine sensitive, start with half a can to assess your response before committing to a full focus session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eCan I drink this every day while working on a deadline-heavy project?\u003c\/h3\u003e\n\u003cp\u003eC4 Ultimate is designed for daily use within the recommended caffeine guidelines, and the zero sugar, no artificial colors formulation makes it suitable for a multi-week project crunch for most healthy adults.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eHow does this compare to drinking multiple cups of coffee for productivity?\u003c\/h3\u003e\n\u003cp\u003eOne 16oz can delivers a higher and more consistent caffeine dose than several coffees, adds nootropic support for focus, and removes the acid and crash variability, so many remote workers find it more reliable for a full workday.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eIs it better than a typical energy drink like Celsius or Monster for focus work?\u003c\/h3\u003e\n\u003cp\u003eC4 Ultimate is positioned as a performance energy drink, so the caffeine dose is higher (300mg) and the nootropic stack with Cognizin and BrainBerry is more explicit than most mainstream competitors, which is why it is favored by users who care about measurable focus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eHow does C4 Ultimate compare to a sugar free pre-workout powder for productivity?\u003c\/h3\u003e\n\u003cp\u003ePowders require mixing and cleanup, which breaks focus. The pre-mixed 16oz can is ready to grab from the fridge, travel-friendly for co-working spaces, and delivers the same performance-grade caffeine and nootropics without any prep.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eIs it really sugar free or is there hidden sugar from the flavors?\u003c\/h3\u003e\n\u003cp\u003eC4 Ultimate Sugar Free contains zero grams of sugar per can. All four flavors, including Arctic Snow Cone and Tropical Tundra Frost, are sweetened without sugar, so you get the taste without the glucose spike that interrupts concentration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eI am sensitive to caffeine. Will the 300mg be too much for productivity use?\u003c\/h3\u003e\n\u003cp\u003eIf you are caffeine sensitive, 300mg is on the stronger end. You can split a can across a couple of hours, or start with a smaller serving to find your personal sweet spot for focus without overstimulation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eHow should I drink C4 Ultimate Sugar Free for the best results?\u003c\/h3\u003e\n\u003cp\u003eFor pre-workout use, drink one 16oz can about 30 minutes before training, gaming, studying, or driving. Consume it cold for best taste, and stay well hydrated throughout the day because the 300mg caffeine dose is on the stronger side.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eHow many cans can I safely drink in a day?\u003c\/h3\u003e\n\u003cp\u003eMost healthy adults should stick to one can per day, and not exceed the 400mg daily caffeine intake recommended by most health authorities. If you are caffeine sensitive, start with half a can to assess tolerance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eShould I drink this on an empty stomach?\u003c\/h3\u003e\n\u003cp\u003eYou can, especially 30 minutes before a workout, but if you have a sensitive stomach, have a light snack first. Pairing the can with water and a small meal is the most comfortable approach for daily use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eIs C4 Ultimate Sugar Free compatible with a low carb or keto diet?\u003c\/h3\u003e\n\u003cp\u003eYes, it is sugar free, contains no artificial colors or dyes, and fits cleanly into low carb, keto, and macro-conscious eating plans. Always confirm with the latest label for your specific dietary needs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eDoes it work with my existing pre-workout or supplement stack?\u003c\/h3\u003e\n\u003cp\u003eIt can be used alongside creatine, beta-alanine, electrolytes, and most common supplements, but avoid stacking it with other high caffeine products to prevent overstimulation. If you take prescription medication, consult your doctor first.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eWhat comes in the box when I order a pack?\u003c\/h3\u003e\n\u003cp\u003eEach order is a case of 12 or 24 factory-sealed 16oz cans, all of the same flavor or a curated multi-flavor mix depending on the listing you select. Nothing else is needed to get started, so no extra shaker, scoop, or accessories are required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eIs this product safe for daily use?\u003c\/h3\u003e\n\u003cp\u003eFor healthy adults, yes. The formula is sugar free, contains no artificial colors or dyes, and is built around a measured 300mg caffeine dose with smooth-release TeaCrine and Dynamine. As with any caffeinated product, follow the daily caffeine guidelines and consult a physician if you have underlying health conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eWill C4 Ultimate Sugar Free stain my teeth like some energy drinks?\u003c\/h3\u003e\n\u003cp\u003eBecause it is sugar free and contains no artificial dyes, it does not carry the same staining risk as brightly colored, sugar-laden energy drinks. Rinsing with water after consumption is still a good habit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eWhat is the difference between a pre-workout drink and a regular energy drink?\u003c\/h3\u003e\n\u003cp\u003eA standard energy drink focuses mostly on caffeine and sugar for quick stimulation, while a performance pre-workout like C4 Ultimate combines a higher, measured caffeine dose with nootropics such as BrainBerry and Cognizin Citicoline for cognitive and physical performance support, often without sugar or artificial colors.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Knacklos","offers":[{"title":"Arctic Snow Cone - 16 Fl Oz (Pack of 24)","offer_id":43528813445210,"sku":"zI3B0CSVM6B8T","price":72.77,"currency_code":"USD","in_stock":true},{"title":"Atomic Grape - 16 Fl Oz (Pack of 12)","offer_id":43528813477978,"sku":"aAhB0DSYS4YF1","price":38.78,"currency_code":"USD","in_stock":true},{"title":"Limeade Cherry Bomb - 16 Fl Oz (Pack of 12)","offer_id":43528813510746,"sku":"BgnB0DG6ZB2CQ","price":42.35,"currency_code":"USD","in_stock":true},{"title":"Arctic Snow Cone - 16 Fl Oz (Pack of 12)","offer_id":43528813543514,"sku":"pBJB07CL6GL3T","price":36.39,"currency_code":"USD","in_stock":true},{"title":"Tropical Tundra Frost - 16 Fl Oz (Pack of 12)","offer_id":43528813576282,"sku":"dV0B0DQ6BKVJ3","price":36.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0740\/7969\/9034\/files\/300mg-caffeine-per-16oz-can-for-high-potency-energy-dosing-1.jpg?v=1782077696","url":"https:\/\/knacklos.myshopify.com\/products\/c4-ultimate-sugar-free-energy-drink-for-late-night-study-sessions-and-deep-coding-focus-16oz-cans-pack-of-12","provider":"Knacklos","version":"1.0","type":"link"}