{"title":"Thermogenic Supplements","description":"\u003cp\u003eCompare thermogenic supplements on the caffeine per serving, the other ingredients and their amounts, and the cost per serving. \"Thermogenic\" is a marketing term for stimulant-based formulas, and we don't claim any product here causes weight loss.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/collections\/weight-management\"\u003eAll weight management\u003c\/a\u003e · \u003ca href=\"\/collections\/fat-burners\"\u003eFat burners\u003c\/a\u003e · \u003ca href=\"\/collections\/l-carnitine\"\u003eL-carnitine\u003c\/a\u003e · \u003ca href=\"\/collections\/stim-free-pre-workout\"\u003eStimulant-free pre-workout\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2\u003eWhat is a thermogenic supplement?\u003c\/h2\u003e\n\u003cp\u003eA thermogenic supplement is a product, usually built around caffeine, that's marketed for dieting. \"Thermogenesis\" means heat production in the body, but caffeine has no authorised health claims in Great Britain, and the word on a label doesn't mean a product has been shown to change body weight.\u003c\/p\u003e\n\u003cp\u003eThe US National Institutes of Health says caffeine \u003ca href=\"https:\/\/ods.od.nih.gov\/factsheets\/WeightLoss-Consumer\/\"\u003emight help you lose a little weight or gain less weight over time\u003c\/a\u003e, and that tolerance can reduce this. The NHS approach is to \u003ca href=\"https:\/\/www.nhs.uk\/live-well\/healthy-weight\/managing-your-weight\/tips-to-help-you-lose-weight\/\"\u003eaim to lose 0.5 to 1kg a week\u003c\/a\u003e through diet and activity. See \u003ca href=\"\/collections\/weight-management\"\u003eweight management\u003c\/a\u003e for more.\u003c\/p\u003e\n\u003ch2\u003eHow much caffeine is in a thermogenic?\u003c\/h2\u003e\n\u003cp\u003eIt varies, so check the caffeine per full serving and add it to your coffee, tea and energy drinks. EFSA says \u003ca href=\"https:\/\/www.efsa.europa.eu\/en\/topics\/topic\/caffeine\"\u003esingle doses of up to 200mg and up to 400mg a day\u003c\/a\u003e from all sources do not raise safety concerns for healthy adults, and up to 200mg a day in pregnancy. It also says 100mg close to bedtime may affect sleep in some adults.\u003c\/p\u003e\n\u003cp\u003e\"Customers need to understand what they're taking, how much they're taking and whether the ingredients suit their individual needs,\" says Andy Arshad, who runs SupplementHQ. If you're sensitive to caffeine, look at \u003ca href=\"\/collections\/stim-free-pre-workout\"\u003estimulant-free products\u003c\/a\u003e instead.\u003c\/p\u003e\n\u003ch2\u003eAre thermogenics safe?\u003c\/h2\u003e\n\u003cp\u003eThey can cause side effects, mostly from caffeine. The International Society of Sports Nutrition lists \u003ca href=\"https:\/\/link.springer.com\/article\/10.1186\/s12970-020-00383-4\"\u003efaster heart rate, palpitations, anxiety, headaches and poorer sleep\u003c\/a\u003e among commonly reported caffeine side effects, increasing with dose.\u003c\/p\u003e\n\u003cp\u003eSpeak to your GP or pharmacist first if you're pregnant or breastfeeding, have a heart condition or high blood pressure, or take medication. Supplements for under-18s should be discussed with a GP or pharmacist.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cem\u003eWe sell the products on this page. That's our commercial interest, and it's why we show the evidence alongside them. This page is \u003ca href=\"\/pages\/health-information-disclaimer\"\u003egeneral information for adults, not personalised medical advice\u003c\/a\u003e. Food supplements should not replace a varied, balanced diet.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eWritten by \u003ca href=\"\/pages\/about-us\"\u003eAndy Arshad\u003c\/a\u003e, SupplementHQ. Last reviewed 11 October 2026.\u003c\/em\u003e\u003c\/p\u003e","products":[{"product_id":"olimp-nutrition-blackweiler-shred","title":"Olimp Nutrition Blackweiler Shred","description":"\u003cp\u003eBlackweiler Shred is Olimp's pre-workout aimed at training in a calorie deficit. We don't claim that any product causes weight loss; check the caffeine per serving.\u003c\/p\u003e\n\n\u003ch3\u003eWhy choose it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePre-workout formulated for cutting phases\u003c\/li\u003e\n\n\u003cli\u003e480g tub, Exotic Orange\u003c\/li\u003e\n\u003cli\u003eFrom a long-established European brand\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to use\u003c\/h3\u003e\n\u003cp\u003eMix one serving with 300–400ml of cold water 20–30 minutes before training. Start with half a serving to assess tolerance, and avoid within six hours of bedtime.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eContains caffeine. Not suitable for children, or people sensitive to caffeine, pregnant or breastfeeding. This is a supplement, not a substitute for a calorie-controlled diet.\u003c\/em\u003e\u003c\/p\u003e","brand":"Olimp Nutrition","offers":[{"title":"480g \/ Exotic Orange","offer_id":58284591710539,"sku":"5901330077524","price":39.89,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1077\/4937\/6331\/files\/image_2023-08-04_64ccde49c0b57.jpg?v=1787914030"},{"product_id":"cellucor-c4-ripped","title":"Cellucor C4 Ripped","description":"\u003cp\u003eC4 Ripped takes the C4 pre-workout formula and adds further ingredients — check the label for the full formula.\u003c\/p\u003e\n\u003cp\u003eIt carries the same moderate caffeine dose as C4 Original, so it stays approachable rather than punishing, and it also contains beta-alanine.\u003c\/p\u003e\n\u003ch3\u003eWhy choose it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eC4 pre-workout formula with extra ingredients\u003c\/li\u003e\n\u003cli\u003eNot a weight-loss product: no supplement replaces a calorie-controlled diet\u003c\/li\u003e\n\u003cli\u003eModerate caffeine dose — check the amount per scoop\u003c\/li\u003e\n\u003cli\u003e192g tub, three flavours\u003c\/li\u003e\n\u003cli\u003eContains beta-alanine\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to use\u003c\/h3\u003e\n\u003cp\u003eMix one scoop with 175–250ml of cold water 20–30 minutes before training. Avoid within six hours of bedtime.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eContains caffeine. Not suitable for children, or people sensitive to caffeine, pregnant or breastfeeding.\u003c\/em\u003e\u003c\/p\u003e","brand":"Cellucor","offers":[{"title":"192g \/ Icy Blue Raspberry","offer_id":58284649382219,"sku":"5056569900201","price":19.16,"currency_code":"GBP","in_stock":true},{"title":"192g \/ Raspberry Lemonade","offer_id":58284649414987,"sku":"5056569900218","price":19.16,"currency_code":"GBP","in_stock":true},{"title":"192g \/ Tropical Punch","offer_id":58284649447755,"sku":"5056569900188","price":19.16,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1077\/4937\/6331\/files\/image_2026-01-26_69774cc56ef63.jpg?v=1787914136"},{"product_id":"jnx-sports-the-ripper-fat-burner-sachets","title":"JNX Sports The Ripper Fat Burner Sachets","description":"\u003cp\u003eThe Ripper is JNX Sports' full-strength fat burner — fast-acting, strongly flavoured, and built around all-day energy and appetite control rather than a single mechanism.\u003c\/p\u003e\u003cp\u003eThe thinking behind it is practical: a fat burner is only useful if you can stick to the diet it's supporting. Energy keeps training quality up when calories are low, and appetite control makes the gap between meals easier to manage. Both matter more than any thermogenic effect on its own.\u003c\/p\u003e\u003cp\u003eThese are single-serving sachets — a low-commitment way to try the flavours before buying a tub, or a convenient option to keep in a bag or a desk drawer.\u003c\/p\u003e\u003cp\u003e5g single-serving sachets in Pineapple Shred, Raspberry Lemonade and Razor Lime.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eContains caffeine. Not recommended for children, pregnant or breastfeeding women, or anyone sensitive to caffeine. Do not exceed the stated dose, and avoid taking it close to bedtime.\u003c\/em\u003e\u003c\/p\u003e","brand":"JNX Sports","offers":[{"title":"5g (1 serving) \/ Pineapple Shred","offer_id":58287715123531,"sku":"799439644878","price":4.92,"currency_code":"GBP","in_stock":true},{"title":"5g (1 serving) \/ Raspberry Lemonade","offer_id":58287715156299,"sku":"799439599239","price":4.92,"currency_code":"GBP","in_stock":true},{"title":"5g (1 serving) \/ Razor Lime","offer_id":58287715189067,"sku":"680569883254","price":4.92,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1077\/4937\/6331\/files\/image_2024-04-25_662a55b3281f8.jpg?v=1787929610"},{"product_id":"nutrend-fat-direct-2in1-shot","title":"Nutrend Fat Direct 2in1 Shot","description":"\u003cp\u003eTwo products in one 60ml bottle: a fat burner and a pre-workout, taken at the same moment they're both most useful.\u003c\/p\u003e\u003cp\u003eThe logic is sound. Training in a calorie deficit is when energy is lowest and when fat-loss support matters most, so combining the stimulant and the thermogenic side into a single pre-training shot saves you taking two things half an hour apart — and stops you doubling up on caffeine by accident.\u003c\/p\u003e\u003cp\u003eTake one shot 20–30 minutes before training, on cutting days when the session needs rescuing. It is not a replacement for the diet doing the work.\u003c\/p\u003e\u003cp\u003eBox of 20 × 60ml shots.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eContains caffeine. Not recommended for children, pregnant or breastfeeding women, or anyone sensitive to caffeine. Do not exceed the stated dose, and avoid taking it close to bedtime.\u003c\/em\u003e\u003c\/p\u003e","brand":"Nutrend","offers":[{"title":"20 x 60ml","offer_id":58290553815371,"sku":"8594014862119","price":27.81,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1077\/4937\/6331\/files\/image_2019-04-02_5ca36182e0840.jpg?v=1787945582"},{"product_id":"trained-by-jp-cv-burn","title":"Trained by JP CV-Burn","description":"\u003cp\u003eCV-Burn is built for one specific slot: the half-hour before a cardio session, when intensity is the thing most likely to slip.\u003c\/p\u003e\u003cp\u003eCardio in a calorie deficit is where training quality falls apart first — the session gets shorter, slower, and easier to skip. CV-Burn is an intensity stimulator designed to keep the effort where it needs to be, so the session you planned is the session you do.\u003c\/p\u003e\u003cp\u003eTake it before cardio and conditioning work rather than before lifting, where a full pre-workout serves you better.\u003c\/p\u003e\u003cp\u003e180g tub.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eContains caffeine. Not recommended for children, pregnant or breastfeeding women, or anyone sensitive to caffeine. Do not exceed the stated dose, and avoid taking it close to bedtime.\u003c\/em\u003e\u003c\/p\u003e","brand":"Trained by JP","offers":[{"title":"180g","offer_id":58290605850955,"sku":"659048915847","price":22.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1077\/4937\/6331\/files\/image_2025-05-14_682462eaa925e.jpg?v=1787946345"},{"product_id":"dy-nutrition-blackbombs-thermogenic-fat-burner","title":"DY Nutrition Blackbombs Thermogenic Fat Burner","description":"\u003cp\u003eBlackbombs is DY Nutrition's thermogenic tablet — a dieting-phase supplement built around berberine, capsicum and a moderate caffeine dose rather than a stimulant blast.\u003c\/p\u003e\u003cp\u003eThe formula pairs 600mg berberine extract with 100mg capsicum (chilli) extract and 100mg caffeine, alongside green tea extract standardised to 50% EGCG, L-phenylalanine, choline, ProGBB and chromium. Black pepper extract at 95% piperine is included to aid absorption of the blend.\u003c\/p\u003e\u003cp\u003eIt suits both cardio and weight-training days, and the tablet format makes it straightforward to dose consistently — two tablets a day covers a month from one tub.\u003c\/p\u003e\u003cp\u003e60 tablets. Manufactured for DY Nutrition, the sports nutrition brand founded by six-time Mr. Olympia Dorian Yates.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eContains caffeine (100mg per tablet). Not recommended for children, or for pregnant or breastfeeding women. Do not exceed the stated dose. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle.\u003c\/em\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIngredients:\u003c\/strong\u003e Bulking agents (microcrystalline cellulose, dicalcium phosphate dihydrate), Berberine HCl (Berberis vulgaris), Coating (HPMC, Nutrafinish black), L-choline bitartrate, Capsicum pepper extract 8:1 (chilli) (Capsicum annuum), Green tea extract 20:1 95% polyphenols 75% catechins 50% EGCG (Camellia sinensis), L-Phenylalanine, Caffeine, Anti-caking agents (silicon dioxide, magnesium stearate), ProGBB (Gamma-Butyrobetaine Ethyl Ester HCl), Black pepper extract (95% piperine) (Piper nigrum), Chromium.\u003c\/p\u003e","brand":"DY Nutrition","offers":[{"title":"Default Title","offer_id":58512349692235,"sku":"DYNutrition-Blackbombs-60tabs","price":19.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1077\/4937\/6331\/files\/41WNdUUIJ2L._AC_SL1500.jpg?v=1789672291"}],"url":"https:\/\/supplementhq.co.uk\/collections\/thermogenics.oembed","provider":"SupplementHQ","version":"1.0","type":"link"}