Forge | Pre-Workout Fat Burner

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The Fat Loss Stack boosts fat loss, preserves muscle and strength, and enhances workout performance.

Pre-Workout Fat Burner Fat Burner Pre-Workout
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Our "It's On Us" 100% Money-Back Guarantee

If you don’t absolutely love our stuff for whatever reason, we don’t request you deliver it to a PO box in the Gobi Desert by carrier pigeon.

Nor do we ask you to fill a cursed inkwell with orc’s blood and demon saliva and with it complete reams of return forms written in ancient Cyrillic script.

We just . . . wait for it . . . give you your money back. No returns. No forms. No nonsense. Holy moo cows.

That means you can say “yes” now and decide later. You really have nothing to lose.

Why International Bestselling Author Mike Matthews Created Forge

Forge is a 100% natural fat burner that helps you lose fat faster (and “stubborn” fat in particular), preserve muscle, and maintain training intensity and mental sharpness.

“Stubborn” fat is a very real phenomenon, and while it ultimately yields to regular exercise and proper diet, it can take its sweet, sweet time.

There aren’t many things you can do to speed this process up, either, but there’s one strategy you should know about:

Fasted exercise with yohimbine supplementation—and that’s why we created Forge.

The reason it’s so effective is simple:

Every ingredient is backed by peer-reviewed scientific research and is included at clinically effective levels.

So, if you want to lose fat faster—and especially belly, hip, and thigh fat—while also maintaining lean mass and workout performance . . . you want to try Forge today.

You won’t be disappointed.

In fact, if you don’t absolutely love Forge, just let us know and we’ll give you a full refund on the spot. No form or return necessary.

You really can’t lose, so order now, and try Forge risk-free and see if it’s for you.

Science-Backed Ingredients
Science-Backed Ingredients

Every ingredient in Forge is backed by peer‑reviewed scientific research demonstrating clear benefits.

Clinically Effective Doses
Clinically Effective Doses

Every ingredient is also included at clinically effective levels, which are the doses used in published scientific studies.

Naturally Sweetened & Flavored
All-Natural Ingredients

Forge contains no artificial ingredients like sweeteners, food dyes, or other unwanted chemicals.

Lab Tested
Lab Tested

Every ingredient in every bottle of Forge is tested for heavy metals, microbes, allergens, and other contaminants to ensure they meet FDA purity standards.

Made in USA
Made in the USA

Forge is proudly made in America in NSF‑certified and FDA-inspected manufacturing facilities.

100% Money-Back-Guarantee
100% Money-Back-Guarantee

If you don't absolutely love Forge, just let us know, and you’ll get a prompt and courteous refund. No forms or returns necessary.

Ingredients (2,760 mg per serving)

Yohimbine (10 mg per serving)

Yohimbine is a naturally occurring substance that’s found in several types of plants native to central and western Africa, including the bark of the yohimbe tree.

Studies show that yohimbine accelerates fat loss by increasing calorie burning and making “stubborn fat” deposits easier to lose.[1][2][3]

The details of how yohimbine speeds up fat loss in the stomach, hips, and thighs regions (the hardest spots to lean out for most people) are rather technical, but the gist is it “deactivates” a mechanism in fat cells that prevents them from being burned.[4]

In a sense, yohimbine helps “take the brakes off” of fat loss so your body’s natural fat-burning chemicals can work more effectively.[5]

Additionally, research shows that yohimbine may also improve exercise performance by staving off physical fatigue—a welcome bonus when calories are restricted for fat loss.[6]

There’s a slight catch with yohimbine, though:

Elevated insulin levels completely negate its weight-loss effects, and that means that if you want to reap its fat loss benefits, you want to use yohimbine only when you’re in a fasted state.[7][8]

The clinically effective dose of yohimbine is between 0.1 and 0.2 milligrams per kilogram of body weight.

Forge contains 10 milligrams of yohimbine per serving and just 2.5 milligrams per pill to allow for maximum flexibility in dosing, as optimal intake depends on body weight.

This also allows for maximum safety.

While yohimbine is generally well tolerated in lower (but still effective) doses, overdosing can cause various negative side effects, including agitation, anxiety, hypertension, and tachycardia.[9]

This is why people with anxiety or panic or trauma disorders (like PTSD) are not advised to take yohimbine.

So, for example, a clinically effective dose of yohimbine for a 150-pound woman would be 7 to 13 milligrams, and one serving of Forge (4 pills) fits nicely in the middle.

Furthermore, if she feels good at this dose, she could add an additional capsule to each dosage and reach the top of the clinically effective range.

A clinically effective dosage for a 200-pound man, however, is higher: 9 to 18 milligrams. In this case, he could start with 4 pills per dosage to assess tolerance and move up to 6 to 7 for the maximum dose for his body weight.

Yohimbine Plant

β-Hydroxy β-Methylbutyrate (2.5 g per serving)

β-Hydroxy β-Methylbutyrate, also known as HMB, is a substance formed when your body metabolizes the amino acid leucine, which is an amino acid that directly stimulates protein synthesis.[10]

HMB is often sold as a muscle-building aid, but the research purported to demonstrate these benefits is shaky at best.[11]

Well-designed studies do show that HMB is an effective anti-catabolic agent, however.[12]

That is, it’s good at reducing muscle breakdown rates, which can help you recover faster from your workouts and experience less muscle soreness.

This also makes HMB perfect for use with fasted training because its anti-catabolic effects can counter the increased muscle breakdown rates that occur when exercising in a fasted state.[13]

In this way, HMB helps you reap all the fat loss benefits of fasted training with fewer problems related to muscle loss.

It’s also worth noting that HMB is superior to leucine in suppressing muscle breakdown.[14] This means it’s also more effective than BCAA supplements because they rely on leucine for their anti-catabolic effects (isoleucine and valine are very weak in this regard).[15][16]

The clinically effective dose of HMB is between 2 and 3 grams.

Raw piece of steak

CDP-Choline (250 mg per serving)

CDP-choline (also known as citicoline) is a chemical that occurs naturally in the brain and increases levels of another chemical called phosphatidylcholine, which is vital for brain health and function.

CDP-choline can also increase levels of a neurotransmitter known as acetylcholine, which is a neurotransmitter involved in learning and muscular contraction.

Research shows that supplementation with CDP-choline improves focus and memory (and verbal memory in particular) and mitigates cognitive decline as we age.[17][18][19][20][21]

For attentional purposes, the clinically effective dose of CDP-choline is between 250 and 500 milligrams.

Whole egg and broken in half egg with yolk inside

No Artificial Food Dyes or Other Chemical Junk

Studies show that artificial food dyes may cause negative effects in some people, including gastrointestinal toxicity and behavioral disorders.[22][23][24][25][26]

No Artificial Food Dyes or Other Chemical Junk

Crossed out beakers with liquid in them

Lab Tested for Potency & Purity


Lab Tested for Potency & Purity

Every bottle of Forge is analyzed in a state-of-the-art ISO 17025 accredited lab to verify what is and isn’t in it. That way, you know exactly what you’re getting and putting into your body.

Forge Lab Test Certificate

How to Use Forge

Take 1 capsule per 50 pounds of body weight 15 minutes prior to fasted training. If well tolerated, add 1 capsule per use until reaching 1 capsule per 25 pounds of body weight.

Supplement Facts

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Verified Customer Reviews

Ingredients & Use

Forge Supplement Facts Forge Supplement Facts


Take 1 capsule per 50 pounds of body weight 15 minutes prior to fasted training. If well tolerated, add 1 capsule per use until reaching 1 capsule per 25 pounds of body weight.


Not intended for use by persons under the age of 18. Do not exceed recommended dose. Consult your physician prior to use if you are pregnant or nursing, or if you are at risk, have been diagnosed, or are being treated for high blood pressure, heart, kidney, or thyroid, anxiety, depression, seizure disorder, or stroke.


Frequently Asked Questions

What the heck is a “pre-workout fat burner”?
How quickly will I see results with Forge?
Even if Forge helps me lose weight, will I just gain it back when I stop taking it?
Will I lose muscle if I do fasted exercise and take Forge?
How long can I safely use Forge for?
Should I take Forge every day?
Is Forge suitable for both fasted weightlifting and cardio?
Should I take Forge if I’m bulking?
What does the Prop65 warning on the label mean?
Is Forge vegan or vegetarian-friendly?

+Scientific References

01. Yohimbine: the effects on body composition and exercise performance in soccer players.

Ostojic SM. Res Sports Med. 2006 Oct-Dec;14(4):289-99. doi: 10.1080/15438620600987106.

02. Yohimbine and rauwolscine reduce food intake of genetically obese (obob) and lean mice.

Callahan MF, Beales M, Oltmans GA. Pharmacol Biochem Behav. 1984 Apr;20(4):591-9. doi: 10.1016/0091-3057(84)90309-5.

03. Alpha-2 adrenoceptors in lipolysis: alpha 2 antagonists and lipid-mobilizing strategies.

Lafontan M, Berlan M, Galitzky J, Montastruc JL. Am J Clin Nutr. 1992 Jan;55(1 Suppl):219S-227S. doi: 10.1093/ajcn/55.1.219s.

04. Yohimbine: the effects on body composition and exercise performance in soccer players.

Ostojic SM. Res Sports Med. 2006 Oct-Dec;14(4):289-99. doi: 10.1080/15438620600987106.

5. Agonist and antagonist actions of yohimbine as compared to fluparoxan at alpha(2)-adrenergic receptors (AR)s, serotonin (5-HT)(1A), 5-HT(1B), 5-HT(1D) and dopamine D(2) and D(3) receptors. Significance for the modulation of frontocortical monoaminergic transmission and depressive states.

Millan MJ, Newman-Tancredi A, Audinot V, Cussac D, Lejeune F, Nicolas JP, Cogé F, Galizzi JP, Boutin JA, Rivet JM, Dekeyne A, Gobert A. Psychopharmacology Department, Institut de Recherches Servier, Centre de Recherches de Croissy, 125, Chemin de Ronde, 78290-Croissy-sur-Seine, Paris, France. Synapse. 2000 Feb;35(2):79-95.

6. Ergogenic Effects of Yohimbine: Standardized Cycling Clinical Study.

Hayder M. Al-Kuraishy, Haidar A. N. Abood, Ali Ismail A. Al-Gareeb. 1. Department of Pharmacology/College of Medicine/ Al-Mustansiriya University/Baghdad/Iraq 2. Department of Pharmacology/College of Medicine/Kerbala University/Kerbala/ Iraq. Karbala J. Med 01/2015; 7(2).

7. Alpha 2-antagonist compounds and lipid mobilization: evidence for a lipid mobilizing effect of oral yohimbine in healthy male volunteers.

Galitzky J, Taouis M, Berlan M, Rivière D, Garrigues M, Lafontan M. Laboratoire de Pharmacologie Clinique et Médicale, Université Paul Sabatier, Toulouse, France. Eur J Clin Invest. 1988 Dec;18(6):587-94.

8. Pre-exercise administration of yohimbine may enhance the efficacy of exercise training as a fat loss strategy by boosting lipolysis.

McCarty MF. Pantox Laboratories, California 92109, USA Med Hypotheses. 2002 Jun;58(6):491-5.

9. Yohimbine use for physical enhancement and its potential toxicity.

Cimolai N, Cimolai T. Department of Pathology and Laboratory Medicine, Faculty of Medicine, The University of British Columbia, Vancouver, British Columbia, Canada. J Diet Suppl. 2011 Dec;8(4):346-54. doi: 10.3109/19390211.2011.615806. Epub 2011 Oct 21.

10. Signaling pathways and molecular mechanisms through which branched-chain amino acids mediate translational control of protein synthesis.

Kimball SR, Jefferson LS. Department of Cellular and Molecular Physiology, Pennsylvania State University College of Medicine, Hershey, PA, USA. J Nutr. 2006 Jan;136(1 Suppl):227S-31S.

11. Effects of beta-hydroxy-beta-methylbutyrate supplementation during resistance training on strength, body composition, and muscle damage in trained and untrained young men: a meta-analysis.

Rowlands DS, Thomson JS. Exercise and Sport Sciences, Institute of Food, Nutrition and Human Health, Massey University, Wellington, New Zealand. J Strength Cond Res. 2009 May;23(3):836-46. doi: 10.1519/JSC.0b013e3181a00c80.

12. β-Hydroxy-β-methylbutyrate free acid reduces markers of exercise-induced muscle damage and improves recovery in resistance-trained men.

Wilson JM, Lowery RP, Joy JM, et al. Br J Nutr. 2013 Aug 28;110(3):538-44. doi: 10.1017/S0007114512005387. Epub 2013 Jan 3.

13. β-Hydroxy-β-methylbutyrate free acid reduces markers of exercise-induced muscle damage and improves recovery in resistance-trained men.

Wilson JM, Lowery RP, Joy JM, et al. Br J Nutr. 2013 Aug 28;110(3):538-44. doi: 10.1017/S0007114512005387. Epub 2013 Jan 3.

14. Effects of leucine and its metabolite β-hydroxy-β-methylbutyrate on human skeletal muscle protein metabolism.

Wilkinson DJ, Hossain T, Hill DS, Phillips BE, Crossland H, Williams J, Loughna P, Churchward-Venne TA, Breen L, Phillips SM, Etheridge T, Rathmacher JA, Smith K, Szewczyk NJ, Atherton PJ. Metabolic and Molecular Physiology Research Group, MRC-ARUK Centre of Excellence for Musculoskeletal Ageing Research, School of Graduate Entry Medicine and Health, Derby DE22 3DT, UK. J Physiol. 2013 Jun 1;591(Pt 11):2911-23. doi: 10.1113/jphysiol.2013.253203. Epub 2013 Apr 3.

15. Hypoglycemic effect of isoleucine involves increased muscle glucose uptake and whole body glucose oxidation and decreased hepatic gluconeogenesis.

Doi M, Yamaoka I, Nakayama M, Sugahara K, Yoshizawa F. Division of Pharmacology, Drug Safety and Metabolism, Otsuka Pharmaceutical Factory, Inc., Naruto, Tokushima 772-8601, Japan. Am J Physiol Endocrinol Metab. 2007 Jun;292(6):E1683-93. Epub 2007 Feb 13.

16. Regulation of valine metabolism in man: a stable isotope study.

Staten MA, Bier DM, Matthews DE. Am J Clin Nutr. 1984 Dec;40(6):1224-34.

17. Improved Attentional Performance Following Citicoline Administration in Healthy Adult Women.

McGlade E., Locatelli A., Hardy J., Kamiya T., Morita M., Morishita K., Sugimura Y., Yurgelun-Todd D. Brain Institute, University of Utah, Salt Lake City, USA; Department of Psychiatry, University of Utah, Salt Lake City, USA; Kyowa Hakko USA, Inc., New York, USA; Kyowa Hakko Bio Co., Ltd., Tokyo, Japan. Vol. 3 No. 6 (2012), Article ID: 19921, 6 pages DOI:10.4236/fns.2012.36103.

18. Citicoline improves memory performance in elderly subjects.

Alvarez XA, Laredo M, Corzo D, et al. Methods Find Exp Clin Pharmacol. 1997;19(3):201-210.

19. Citicoline improves verbal memory in aging.

Spiers PA, Myers D, Hochanadel GS, Lieberman HR, Wurtman RJ. Arch Neurol. 1996;53(5):441-448. doi:10.1001/archneur.1996.00550050071026.

20. A randomized, placebo-controlled trial of citicoline add-on therapy in outpatients with bipolar disorder and cocaine dependence.

Brown ES, Gorman AR, Hynan LS. J Clin Psychopharmacol. 2007;27(5):498-502. doi:10.1097/JCP.0b013e31814db4c4.

21. Citicoline improves memory performance in elderly subjects.

Alvarez XA, Laredo M, Corzo D, et al. Methods Find Exp Clin Pharmacol. 1997;19(3):201-210.

22. Toxicological significance of azo dye metabolism by human intestinal microbiota.

Feng J, Cerniglia CE, Chen H. Division of Microbiology, National Center for Toxicological Research, US Food and Drug Administration, AR , USA. Front Biosci (Elite Ed). 2012 Jan 1;4:568-86.

23. Artificial food dyes and attention deficit hyperactivity disorder.

Kanarek RB. Department of Psychology, Tufts University, Medford, Massachusetts, USA. Nutr Rev. 2011 Jul;69(7):385-91.

24. Meta-analysis of attention-deficit/hyperactivity disorder or attention-deficit/hyperactivity disorder symptoms, restriction diet, and synthetic food color additives.

Nigg JT, Lewis K, Edinger T, Falk M. Oregon Health and Science University, Portland, OR, USA. J Am Acad Child Adolesc Psychiatry. 2012 Jan;51(1):86-97.e8.

25. Food additives and hyperactive behaviour in 3-year-old and 8/9-year-old children in the community: a randomised, double-blinded, placebo-controlled trial.

McCann D, Barrett A, Cooper A, Crumpler D, Dalen L, Grimshaw K, Kitchin E, Lok K, Porteous L, Prince E, Sonuga-Barke E, Warner JO, Stevenson J. School of Psychology, Department of Child Health, University of Southampton, Southampton, UK. Lancet. 2007 Nov 3;370(9598):1560-7.

26. Effect of food azo dye tartrazine on learning and memory functions in mice and rats, and the possible mechanisms involved.

Gao Y, Li C, Shen J, Yin H, An X, Jin H. Scientific and Technological College of Chemistry and Biology, Yantai Univ., Yantai, PR China. J Food Sci. 2011 Aug;76(6):T125-9.

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