--- product_id: 1549744 title: "NATURAL STACKS Smart Caffeine Pills - 100mg Caffeine + 200mg L-Theanine Supplement - Supports Energy and Focus - No Jitters and No Crash - 60 Capsules" brand: "natural stacks" price: "€ 45.44" currency: EUR in_stock: true reviews_count: 8 category: "Natural Stacks" url: https://www.desertcart.hr/products/1549744-natural-stacks-smart-caffeine-pills-100mg-caffeine-200mg-l-theanine store_origin: HR region: Croatia --- # 100mg pure caffeine for clean energy 200mg L-Theanine for calm focus Non-GMO, vegan & gluten-free formula NATURAL STACKS Smart Caffeine Pills - 100mg Caffeine + 200mg L-Theanine Supplement - Supports Energy and Focus - No Jitters and No Crash - 60 Capsules **Brand:** natural stacks **Price:** € 45.44 **Availability:** ✅ In Stock ## Summary > ⚡ Elevate your hustle with calm, clean energy—no jitters, just results! ## Quick Answers - **What is this?** NATURAL STACKS Smart Caffeine Pills - 100mg Caffeine + 200mg L-Theanine Supplement - Supports Energy and Focus - No Jitters and No Crash - 60 Capsules by natural stacks - **How much does it cost?** € 45.44 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/1549744-natural-stacks-smart-caffeine-pills-100mg-caffeine-200mg-l-theanine) ## Best For - natural stacks enthusiasts ## Why This Product - Trusted natural stacks brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Balanced Energy Boost:** 100mg caffeine + 200mg L-Theanine delivers smooth, jitter-free alertness without the crash. - • **Trusted Open-Source Brand:** Natural Stacks’ commitment to transparency means you know exactly what you’re putting in your body. - • **Perfect Coffee Alternative:** Skip the jitters and late-night wired feeling—smart caffeine that fits seamlessly into your daily routine. - • **Sustained Focus & Productivity:** Enhance mental clarity and motivation for work, study, or workouts with long-lasting effects. - • **Clean & Transparent Ingredients:** Non-GMO, vegan, gluten-free, and fully traceable with 3rd party lab testing for peace of mind. ## Overview NATURAL STACKS Smart Caffeine Pills combine 100mg of pure caffeine with 200mg of L-Theanine from green tea to provide a smooth, focused energy boost without jitters or crashes. This vegan, non-GMO, and gluten-free supplement supports sustained mental clarity and productivity, making it an ideal coffee alternative. Backed by transparent sourcing and third-party testing, it’s designed for professionals seeking reliable, clean energy anytime. ## Description Buy NATURAL STACKS Smart Caffeine Pills - 100mg Caffeine + 200mg L-Theanine Supplement - Supports Energy and Focus - No Jitters and No Crash - 60 Capsules on desertcart.com ✓ FREE SHIPPING on qualified orders Review: An Energy Boost Just When You Need It! - Are you exhausted and mentally plus physically worn out? Life can do that to you and sometimes you need a little boost of caffeine energy to get through another day. I was feeling emotionally worn out from dealing with a situation that was not resolving itself and I was having low motivation to get things done. Then I remembered I had these capsules and figured one couldn't hurt. I will say these do give you an energy that is more long lasting and it didn't make me feel anxious or wired and I felt no crash besides that I ended up going to bed a little earlier that night. I'd say from the time I took one capsule to the moment I got active was about 20 minutes. I cleaned my whole kitchen, did several loads of laundry and did other things around the house that needed to be done. I literally felt like all the negative emotions I'd been feeling dissolved into a sense of happiness and peace. I will however say that you don't want to take these if you are not near a restroom because I found out these have a diuretic effect like coffee. Make sure to drink plenty of water even if you only take one capsule. I am not a doctor, nor is this medical advice. Some people also can't handle much caffeine due to heart or anxiety issues. So use with caution. But overall I felt these were safe enough for me and did give me more energy than a cup of coffee. I personally would not take more than one capsule at a time during a day and would not take these every single day. I consider these more a last resort when I'm really low on energy or feeling emotionally drained. For that they work like a miracle! ~The Rebecca Review Review: Convenient powder pill, add to yogurt and your stomach will thank you for quitting coffee. - How did I live without this product? ## Features - 💡ALERT FOCUS AND PRODUCTIVITY: Take this Smart Caffeine Supplement with L-theanine for when you need alert focus and long lasting energy. We blended 100 mg of the purest form of Caffeine with 200mg mg of L-Theanine from Green Tea to get the best of both worlds. - 🚫 NO JITTERS OR CAFFEINE CRASH: Unlike the 200mg caffeine pills that make you jittery and anxious, Smart Caffeine is a calm and smooth energy pill. No more staying up late, wired up from your last cup of coffee too many. - ☀️ START YOUR DAY OFF STRONG: Add Smart Caffeine to your morning routine or anytime of day as a study aid, pre-workout or whenever your energy needs a lift. Perfect as a coffee or energy drink replacement. - 🌿HEALTHY AND SAFE: Our all ingredients are Non-GMO, gluten free, and vegan. Every ingredient can be traced directly to trusted suppliers. - Brain Health Supplement from a Trusted Open-Source Company: Natural Stacks goes beyond the standard brain supplement requirements to assure customers of the commitment we have to transparency. By being open-source, we promise ingredient traceability, 3rd party lab testing & full label disclosure. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00GXPNEUO | | Age Range Description | Adult | | Allergen Information | Gluten Free | | Best Sellers Rank | #42,576 in Health & Household ( See Top 100 in Health & Household ) #171 in Sports Nutrition Endurance & Energy Supplements #12,127 in Vitamins, Minerals & Supplements | | Brand | NATURAL STACKS | | Brand Name | NATURAL STACKS | | Color | Blue | | Container Type | Bottle | | Customer Reviews | 4.3 out of 5 stars 617 Reviews | | Diet Type | Gluten Free | | Dosage Form | 1 Capsule | | Flavor | Unflavored | | Item Dimensions | 3.94 x 3.94 x 3.94 inches | | Item Form | Capsule | | Item dimensions L x W x H | 3.94 x 3.94 x 3.94 inches | | Manufacturer | Natural Stacks | | Manufacturer Part Number | PB-Q91J-HSEU | | Material Features | Vegan | | Number of Items | 1 | | Primary Supplement Type | Caffeine | | Product Benefits | Focused Energy | | Special Ingredients | Caffeine, L-Theanine | | Specific Uses For Product | Energy, Focus | | UPC | 798295452535 | | Unit Count | 60 Count | ## Product Details - **Age Range (Description):** Adult - **Brand:** NATURAL STACKS - **Diet Type:** Gluten Free - **Flavor:** Unflavored - **Item Form:** Capsule - **Item dimensions L x W x H:** 3.94 x 3.94 x 3.94 inches - **Primary Supplement Type:** Caffeine - **Product Benefits:** Focused Energy - **Special Ingredients:** Caffeine, L-Theanine - **Unit Count:** 60 Count ## Images ![NATURAL STACKS Smart Caffeine Pills - 100mg Caffeine + 200mg L-Theanine Supplement - Supports Energy and Focus - No Jitters and No Crash - 60 Capsules - Image 1](https://m.media-amazon.com/images/I/61BMDdmKYNL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Curious as to the amount of Caffeine and L-Theanine in each capsule, could you provide a rough estimate of each please?** A: 100 mg Caffeine and 200 mg L-Theanine per capsule. **Q: Is it dairy free?** A: Hi Amazon Customer, Thank you for your question. Smart Caffeine is dairy free. We hope this helps! If you have any other questions or concerns, please let us know by reaching out to us directly -- contact@thegroupdeal.com. -Zoey, Customer Service Customer satisfaction is our top priority. We are always happy to help! **Q: I am considering these, but at a lower dose. Are these pills solid that can be broken in half or are they capsules filled with powder?** A: Check out my response to Luis's comment, but obviously it's you're body so you can do whatever you want. There are other brands on Amazon that sell this same stack but at different doses. Here ya go: http://smile.amazon.com/Puritans-Pride-Caffeine-L-Theanine-Capsules/dp/B00NAWBUHC/ref=pd_sbs_hpc_4?ie=UTF8&refRID=0YMTY1N1XRT72QW09TVVThose have exactly half of what Smart Caffeine has. **Q: How long do the feeling of concentration last from 1 dose?** A: Let's use today, this morning I took a pill at 9:30. I didn't redose on caffeine (coffee) till 3:55. I would say I felt the slowdown at around 3pm. So it is pretty textbook 5-ish hours that caffeine is rated for. The difference with this pill is besides the non jittery high, the comedown is very easy and didn't feel like a crash, and that's even after a couple of meals. ## Customer Reviews ### ⭐⭐⭐⭐⭐ An Energy Boost Just When You Need It! *by T***W on December 27, 2024* Are you exhausted and mentally plus physically worn out? Life can do that to you and sometimes you need a little boost of caffeine energy to get through another day. I was feeling emotionally worn out from dealing with a situation that was not resolving itself and I was having low motivation to get things done. Then I remembered I had these capsules and figured one couldn't hurt. I will say these do give you an energy that is more long lasting and it didn't make me feel anxious or wired and I felt no crash besides that I ended up going to bed a little earlier that night. I'd say from the time I took one capsule to the moment I got active was about 20 minutes. I cleaned my whole kitchen, did several loads of laundry and did other things around the house that needed to be done. I literally felt like all the negative emotions I'd been feeling dissolved into a sense of happiness and peace. I will however say that you don't want to take these if you are not near a restroom because I found out these have a diuretic effect like coffee. Make sure to drink plenty of water even if you only take one capsule. I am not a doctor, nor is this medical advice. Some people also can't handle much caffeine due to heart or anxiety issues. So use with caution. But overall I felt these were safe enough for me and did give me more energy than a cup of coffee. I personally would not take more than one capsule at a time during a day and would not take these every single day. I consider these more a last resort when I'm really low on energy or feeling emotionally drained. For that they work like a miracle! ~The Rebecca Review ### ⭐⭐⭐⭐⭐ Convenient powder pill, add to yogurt and your stomach will thank you for quitting coffee. *by S***. on February 16, 2026* How did I live without this product? ### ⭐⭐⭐⭐⭐ Great Product *by B***. on December 10, 2015* Currently trudging my way through grad school while working, and often find myself with low energy and unable to focus. Must be the lack of sleep huh? Wrong. Despite being extremely busy, I usually average about 6-8 hours of sleep per night, the exact same amount I had before I went back to grad school. Because of this, I figured I would get something relatively natural and low impact to help increase my energy and focus. I opted for this particular brand because the reviews were pretty good, the packaging and marketing looked rather legit ( I know this may seem like a crazy thing to go off of, but with vitamins if they look like they belong in an infomercial, I feel nervous.) and the price was right. I got them in the mail, and within a week I noticed that I had increased energy, and after two weeks I saw that it was even more intensified. With that said, I still hadn’t seen any improvement in focus, so I decided to “stack” (new supplement lingo I learned from a guy at a health foods store) another supplement, called NootropX - 90 caps - Mental Focus and Concentration Supplement With Memory Enhancement For Extreme Clarity and Alertness - Instant Brain and Memory Power Boost From Patented AES® Absorption System - The Ultimate Brain Vitamins which is a little bit more geared towards the focus aspect I was looking for. After two weeks of taking both of those, I noticed that I was performing better at school and work, and I had the energy to do even more than I had hoped for. My work was coming out better, as I had been able to focus more. I definitely recommend this supplement to anyone who is looking for an energy boost, and even though it didn’t give me a boost in focus, it’s still a great product and since everyone’s body is different it may work for you! ## Frequently Bought Together - NATURAL STACKS Smart Caffeine Pills - 100mg Caffeine + 200mg L-Theanine Supplement - Supports Energy and Focus - No Jitters and No Crash - 60 Capsules - NATURAL STACKS Dopamine Brain Food - 650mg L-Tyrosine Supplement - Dopamine Supplement for Focus & Mental Drive - Supports Mental Energy - Neurotransmitter Support with B Vitamins - 60 Capsules - NATURAL STACKS Focus Bites for Productivity & Cognition - Clinically Tested Paraxanthine Supplement - Fast Acting & Clean Stimulation - Caffeine-Free Supplement for Learning - 30 Melon Mint Chewables --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/1549744-natural-stacks-smart-caffeine-pills-100mg-caffeine-200mg-l-theanine](https://www.desertcart.hr/products/1549744-natural-stacks-smart-caffeine-pills-100mg-caffeine-200mg-l-theanine) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-07-15*