For many people, taking just one supplement has proven more than enough to see changes — whether in looks or health. But sometimes taking two supplements at the same time yields tremendously better results, as one supplement cranks up the fat-burning machine while the other significantly enhances its effects.
The supplement combos below will rev up your metabolism and seriously speed up the fat-loss process. Each pairing works through synergistic mechanisms — meaning the combination is more powerful than either ingredient alone. If you want to know which individual ingredients work and why, read: Natural Fat Burners: 6 Proven Ingredients That Actually Work
1. Caffeine + Green Tea Extract
The market is absolutely saturated with fat burners, and the majority are too expensive for people on a tight budget. But that doesn’t mean fat burners need to be expensive to produce results. You can find caffeine and green tea extract in almost every fat-burning supplement on the market — because they work. Buying them separately and mixing your own is a smart way to create a powerful fat-burning combo for significantly less money.
One of the main ways caffeine increases fat loss is through its ability to connect to fat cells and increase the removal of fat from them, while simultaneously inhibiting further fat storage. It also increases fat burning during both exercise and rest.
Green tea extract, on the other hand, is full of catechins. A specific compound known as epigallocatechin gallate (EGCG) is the main driver of green tea’s fat loss effects. EGCG inhibits an enzyme that breaks down norepinephrine — the neurotransmitter that controls metabolic rate and the overall fat-burning process. When you stop the breakdown of norepinephrine, you increase your metabolic rate and fat burning for longer periods, especially while caffeine is simultaneously freeing fat from fat cells. Numerous studies have confirmed that green tea extract significantly increases fat loss.
How to take it: 300–400mg of caffeine anhydrous with 600–1,000mg of green tea extract standardised for EGCG — once in the morning and one hour pre-workout. On rest days, take the second dose in the afternoon.
2. Forskolin + Carnitine
To take fat-burning to the max, you need a supplement that goes directly to your fat deposits and frees them up so the fat can travel via the bloodstream to your muscles and other tissues where it’ll be used as energy. Then you need to ensure that fat is transported into the cell organelles that actually burn it — the mitochondria. The forskolin-carnitine combo handles both actions.
Forskolin — the active compound in the plant coleus forskohlii — handles the first action. It increases fat loss by activating the enzyme adenylate cyclase, which triggers a cascade of events leading to the activation of hormone-sensitive lipase (HSL). HSL increases lipolysis — the ability to release fat from fat cells into the bloodstream, making it available to travel to muscle tissue. One 12-week study found that overweight men who consumed forskolin lost significantly more fat than participants who took a placebo.
Carnitine handles the second part. It’s an amino-acid compound that helps fat arriving at the tissues enter the mitochondria of the cells, where it’s used as fuel. Studies have confirmed that supplementing with carnitine increases fat-burning during both exercise and rest and leads to greater overall weight loss.
How to take it: 30–50mg of forskolin and 1–4g of carnitine (available as acetyl-L-carnitine, L-carnitine, or L-carnitine-L-tartrate) with your breakfast, pre-workout meal, and post-workout meal.
3. Red Pepper + Ginger
Did you know that sometimes all it takes to increase fat burning is adding specific spices to your food? Red pepper and ginger make your meals more enjoyable and increase your metabolic rate at the same time. If you happen to like spicy food, all the better — increasing fat loss will be a real no-brainer.
Red chilli peppers contain capsaicin — the compound that gives them their heat. Capsaicin increases body fat loss by raising metabolic rate through its ability to elevate norepinephrine levels. It also significantly reduces hunger, lowering total daily calorie consumption. Related: The Fat Burning Benefits of Cayenne Pepper
Ginger is a plant with anti-inflammatory properties and the ability to soothe motion sickness and nausea — but it’s also genuinely effective for fat loss. Studies have shown that ginger in both fresh and dry form increases metabolic rate and lactic acid release by the muscles. Since lactic acid directly stimulates the release of growth hormone (GH) — and GH in turn increases lipolysis — you get another fat-loss mechanism from ginger.
How to take it: Add both to your meals wherever possible. Red pepper works well in eggs, cheese dishes, traditional Mexican cuisine, hot sauces, and salsas. Ginger works well with sushi and sashimi (pickled ginger), sliced into stir-fries, or added to tea. For supplemental use, look for capsaicin and ginger extract capsules.
4. Sesamin + TTA
Some supplements increase fat loss by activating the genes that control fat burning and fat storage. Sesamin and TTA have exactly this ability.
Sesamin is a potent antioxidant and fat burner. Its active form activates specific receptors inside muscle, liver, and heart cells called peroxisome proliferator-activator receptor alpha (PPAR alpha). Activating PPAR alpha switches on genes that increase fat burning and reduce further fat storage.
Tetradecylthioacetic acid (TTA) is a fatty acid with sulphur atoms attached to it, which prevents it from being used as an energy source by the body — but still allows it to control the burning and storage of fats. TTA stimulates PPAR alpha plus PPAR delta and gamma, which elicits additional effects including decreasing total cholesterol and LDL cholesterol while increasing insulin sensitivity. This means your body needs less insulin to break down sugars, which further supports fat loss.
How to take it: 600–1,000mg of sesamin and 300–1,000mg of TTA with every meal.
5. Selenium + Calcium + Zinc
Most people think of minerals as something useful only in a multivitamin. But specific minerals are essential to getting leaner — and most people aren’t getting enough of them.
Calcium has genuine fat-burning properties. It controls the hormone calcitriol, which tells your body to produce fat and reduces fat breakdown. When you consume enough calcium, calcitriol release is suppressed. Calcium also reduces the amount of fat absorbed by the digestive system.
Selenium is essential for proper thyroid gland functioning and thyroid hormone production. It’s a key component of the enzyme that converts thyroxine to triiodothyronine — which plays a critical role in keeping metabolic rate elevated. Low selenium levels cause thyroid malfunction and can lead to hypothyroidism, slowing your metabolism significantly.
Zinc is equally important. Zinc deficiency inhibits thyroid hormone release, lowers metabolic rate, and makes fat loss harder. Low zinc is particularly common in athletes training hard on a caloric restriction.
One study found that participants on a low-zinc diet experienced a significant decrease in metabolic rate — then after 20 days of zinc supplementation (20mg daily), their metabolism reached higher levels than before the low-zinc diet began. A more recent study found that zinc deficiency also lowers leptin levels — the hormone responsible for keeping metabolism elevated and hunger suppressed.
How to take it: 1,000mg of calcium and 300–400mcg of selenium daily with meals. For zinc, take it via a ZMA supplement on an empty stomach before bed — this provides approximately 35mg of zinc and ensures your metabolic rate stays elevated overnight.
6. Glutamine + Arginine
Some amino acids carry powerful fat-burning effects alongside their anabolic properties. Two prime examples are glutamine and arginine — and their fat-burning impact is significantly increased when combined.
Studies have shown that glutamine consumption can increase metabolic rate and fat burning. One study found that participants who consumed glutamine with breakfast increased the amount of fat and calories burned for energy compared to when they took a simple amino acid combination. A separate study found that pre-workout glutamine consumption resulted in increased calorie expenditure. Glutamine also boosts growth hormone, which increases lipolysis — the release of fat from fat cells.
Arginine’s ability to increase nitric oxide levels is well known, but far fewer people know that this same property makes it a potent fat burner. Research shows nitric oxide can boost fat-burning through its ability to stimulate lipolysis.
With glutamine providing increased metabolic burn, freed fat is more likely to be used as energy. Arginine also independently increases growth hormone release, further amplifying lipolysis. One study found that female athletes who took arginine for 4 weeks lost fat and gained muscle simultaneously without changing their regular macronutrient intakes.
How to take it: 5–10g of glutamine with breakfast, pre-workout, post-workout, and before bed. 4–10g of arginine 30–60 minutes before breakfast, before training, immediately post-workout, and 30–60 minutes before bed.
7. Whey Protein + Soy Protein
Everyone knows how useful whey protein is for building muscle — but far fewer people know it’s also genuinely effective for fat loss. Using both whey and soy protein powders to increase daily protein intake is an excellent method to build muscle and lose fat simultaneously.
Multiple studies have shown that fat loss is significantly enhanced when whey protein is incorporated into the diet. One key reason: whey protein reduces hunger. One study found that participants who took whey protein an hour and a half before eating a large meal consumed less food than when they took a casein shake — due to a 60% greater increase in the hunger-reducing hormones cholecystokinin and glucagon-like peptide-1.
Soy protein isn’t just for women. It provides genuine fat loss benefits for men too. Studies have found that soy protein contains peptides that signal the brain to keep resting metabolic rate elevated and reduce hunger throughout the day.
How to take it: Before training — a shake with 10g each of whey and soy protein. Immediately post-workout: a shake with 20g each of whey and soy protein. Between meals: a shake with 10–20g each of whey and soy protein.
8. Glucomannan + 5-HTP
The main rule for getting lean is decreasing caloric and carbohydrate intake. The main problem with this approach is that it’s invariably followed by hunger — sometimes unbearable. These two supplements address that directly.
Glucomannan is a soluble fibre from the root of the konjac plant. It absorbs large quantities of water in the digestive system, creating a sensation of fullness. One study found that participants who took glucomannan lost significant amounts of weight and fat regardless of whether they exercised or not.
For most people, reducing carb intake is the hardest part of a cut. Serotonin levels drop significantly on a caloric deficit — especially when carbs are reduced — creating strong cravings, particularly at night. The essential amino acid tryptophan converts to 5-Hydroxytryptophan (5-HTP) in the body, which then forms serotonin and melatonin.
Supplementing with 5-HTP curbs carb cravings and helps you relax before bed. A study found that obese participants who consumed 5-HTP ate significantly fewer calories and lost 10 pounds over 12 weeks, while the placebo group found it hard to restrict food intake and lost only a couple of pounds.
How to take it: 1–2g of glucomannan before each meal. 50–300mg of 5-HTP before going to sleep.
9. CLA + Fish Oil
Two decades ago, low-fat diets that eliminated virtually all fats were deemed the best way to lose weight — with healthy fats completely ignored. Nutrition science has moved on considerably since then.
It may seem counterintuitive to eat fats in order to drop fat, but CLA and fish oil will do exactly that when taken as directed.
CLA (conjugated linoleic acid) helps shed excess body fat while simultaneously building muscle and increasing strength. One way it works is by inhibiting lipoprotein lipase — an enzyme found around fat cells whose job is to pick up fat from circulation and store it as body fat.
One study found that participants who took CLA for 6 months without following any specific diet or training program lost more fat (most of it from the midsection) than participants who took an equal amount of olive oil — and the CLA group also experienced increased muscle growth without training. A separate study found that participants who took CLA while following a training program lost more fat and gained more muscle and strength than those taking a placebo.
Fish oil is high in essential omega-3 fatty acids that directly support fat burning. They’re converted to prostaglandins — hormone-like compounds that stimulate thermogenesis. A study also found that omega-3 fatty acids help prevent ingested fat from being stored in fat deposits.
Related: Fish Oil Benefits: Muscle Growth, Fat Loss, and Health Benefits
How to take it: 3–4g of CLA and 1–2g of fish oil with all your meals.
Building a Mega-Combo
You can go even further by combining several of these pairs into a mega-combo for even greater fat-burning results. The best approach is to try all 9 combos if it stays within your budget. Start with one combo for a couple of weeks, assess how it’s going, then add others one at a time — that way you’ll know exactly which ones are producing results for you specifically.
Combined with a sound diet and a consistent training plan, these combinations will produce results that a single supplement approach simply can’t match.
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