Vintage Burn Review 2026: A Transparent Fat Burner That Preserves Muscle

EDITOR'S PICK

Fat Burner

Old School Labs Vintage Burn

★★★★☆ 4.2

Muscle-preserving thermogenic with transparent label. Green tea extract, green coffee bean, raspberry ketones, caffeine. ~$1.33/serving.

Pros

• Fully transparent label — every dosage listed
• Designed to preserve muscle during cutting
• Moderate caffeine — clean energy without jitters
• Stimulant-free ingredients support fat oxidation

Cons

• Premium priced for the ingredient profile
• Raspberry ketone research is limited in humans
• Caffeine-sensitive users may still react

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Quick Verdict

Old School Labs Vintage Burn is a thermogenic fat burner that takes a different approach to the category. Instead of loading up on stimulants and hiding behind proprietary blends, it uses research-backed doses of natural thermogenic ingredients with complete label transparency. The result is a fat burner that actually tells you what you are getting, prioritizes muscle preservation during calorie restriction, and delivers clean energy without the crash. It is not the cheapest option, and some ingredient choices (raspberry ketones) have limited human data, but for men who train seriously and want a cutting-phase supplement they can trust, Vintage Burn delivers. 4.2/5.

What Is Vintage Burn?

Vintage Burn is a thermogenic fat burner made by Old School Labs, a brand built on the philosophy of clean, transparent supplementation inspired by the golden era of bodybuilding. The formula is designed to support fat loss while preserving lean muscle — a critical distinction that separates it from the numerous aggressive stimulant-based fat burners flooding the market.

The key ingredients include green tea extract (330mg EGCG), green coffee bean extract (300mg chlorogenic acid), raspberry ketones, caffeine anhydrous, olive leaf extract, chrysin, and forskohlii. Each ingredient and its exact dosage is printed on the label, which in the fat burner category is genuinely refreshing. Too many competing products use proprietary blends that could contain virtually anything at any dose.

Old School Labs positions Vintage Burn as a fat burner for people who actually train — not a magic pill for the sedentary, but a targeted tool for men already eating in a deficit and lifting weights who want an edge in fat oxidation without sacrificing the muscle they have worked to build.

I ran Vintage Burn during an eight-week cut from 215 down to 203. I was already eating at a 500-calorie deficit and training four days a week with a push/pull/legs split. The reason I chose Vintage Burn over the dozen other options in our test queue was simple: I could see exactly what was in it. After years of reviewing supplements, I have zero interest in proprietary-blend fat burners. If a brand will not tell me how much caffeine is in their product, I am not putting it in my body.

Key Features & Specs

Ingredient Breakdown

Green Tea Extract (330mg)

Standardized for EGCG (epigallocatechin gallate), the most potent catechin in green tea. EGCG is one of the most well-researched thermogenic compounds in existence. It boosts metabolic rate through catechol-O-methyltransferase (COMT) inhibition, which prolongs the activity of norepinephrine — a key hormone in fat mobilization. Multiple meta-analyses of randomized controlled trials have demonstrated that green tea catechins, particularly when combined with caffeine, significantly increase fat oxidation and energy expenditure. The 330mg dose in Vintage Burn falls within the range used in clinical studies (270–400mg EGCG).

Green Coffee Bean Extract (300mg)

Provides chlorogenic acid, a polyphenol that may support healthy glucose metabolism and fat breakdown. Chlorogenic acid appears to influence how the body absorbs and utilizes carbohydrates, potentially reducing blood glucose spikes and promoting fat as a fuel source. The research is more modest than green tea extract, but several human studies have shown positive effects on body composition when combined with calorie restriction.

Raspberry Ketones (200mg)

This is the most controversial inclusion. Raspberry ketones showed promise in rodent studies for enhancing adiponectin secretion — a hormone involved in fat metabolism. However, human clinical data is limited. The doses used in animal studies were far higher relative to body weight than what is practical in a supplement. We consider this ingredient a reasonable inclusion based on preliminary research, but it should not be considered a primary fat-loss driver. It is a supporting player, not a star.

Caffeine Anhydrous

The most well-studied ergogenic aid in sports nutrition. Caffeine increases metabolic rate, mobilizes fatty acids, improves exercise performance, and suppresses appetite. Vintage Burn uses a moderate dose — enough for a noticeable energy boost without the aggressive stimulant overload that plagues many fat burners. The synergy between caffeine and green tea extract EGCG is well-documented, with the combination producing greater thermogenic effects than either alone.

Olive Leaf Extract

Provides oleuropein and other polyphenols with antioxidant properties. During intense training and calorie restriction, oxidative stress increases. Olive leaf extract helps support the body’s antioxidant defenses during the metabolic stress of a cutting phase — a thoughtful inclusion that shows Old School Labs is thinking beyond just fat burning.

Chrysin & Forskohlii

Included to support favorable hormone balance during calorie restriction. Forskohlii (Coleus forskohlii) activates cyclic AMP (cAMP), which may support fat metabolism and lean body mass. Chrysin is a bioflavonoid that may help modulate estrogen-related pathways. Both are reasonable inclusions for a muscle-preserving fat burner, though individual human data on these ingredients is less robust than the primary thermogenic compounds.

Pros & Cons

What We Like

• Full label transparency: Every single ingredient and its exact dosage is listed. In the fat burner category, where proprietary blends are the norm, this alone puts Vintage Burn in the top tier
• Muscle-preserving design: The formula is specifically built for men in a calorie deficit who want to lose fat, not muscle. Chrysin and forskohlii support hormonal balance during cutting
• Moderate stimulant profile: Unlike aggressive fat burners with 300mg+ caffeine plus other stimulants, Vintage Burn delivers clean energy without overwhelming the nervous system
• Research-backed primary ingredients: Green tea extract and caffeine are among the most evidence-based thermogenic compounds available. The dosages align with clinical research
• No proprietary blends: Worth repeating. You know exactly what you are paying for

What Could Be Better

• Premium pricing: At ~$1.33 per serving, Vintage Burn is more expensive than many competitors. The transparent formula justifies some premium, but budget-conscious buyers may find it steep
• Raspberry ketone evidence is thin: The 200mg raspberry ketone inclusion is based more on preliminary research than strong human evidence. Not a dealbreaker, but not a selling point either
• Four capsules per serving: Some men will find the four-capsule serving size inconvenient compared to one- or two-capsule alternatives
• Caffeine-sensitive users beware: While moderate, caffeine-sensitive individuals should start with half a dose to assess tolerance

How It Compares

Vintage Burn vs Instant Knockout

Instant Knockout is another popular thermogenic with a transparent label. It uses higher caffeine doses and includes cayenne pepper for additional thermogenic effect. Vintage Burn has a gentler stimulant profile and adds chrysin/forskohlii for hormone support. If you want maximum stimulant-driven fat loss and handle caffeine well, Instant Knockout may be more aggressive. If you want cleaner energy and muscle preservation priority, Vintage Burn is the better fit.

Vintage Burn vs Transparent Labs PhysiqueSeries

Transparent Labs is another brand committed to label transparency. Their fat burner includes forslean, green tea extract, and 5-HTP for appetite control. Both are quality products; the main difference is that Vintage Burn emphasizes the muscle-preserving angle more explicitly with its hormone-support ingredients. Head to head, both are legitimate options for men who demand label transparency.

Vintage Burn vs Budget Fat Burners

A bottle of caffeine pills and a standalone green tea extract will cost roughly $15–20 combined and cover the two most evidence-based thermogenic ingredients. You miss the supporting cast (forskohlii, chrysin, olive leaf), but at less than half the price. For men on a budget who just want the thermogenic basics, this DIY approach works. Vintage Burn is for men who want a convenient, complete, transparent formula in one bottle.

For our full category comparison, see the Best Fat Burners for Men 2026 guide.

During my eight-week test, I compared Vintage Burn head to head with a no-name Amazon fat burner that claimed similar benefits at half the price. The no-name used a proprietary blend totaling 750mg — no individual dosages listed. After two weeks on it, I had jitters, a racing heart at random times, and zero way to know why because I had no idea what was actually in the capsules. Switched back to Vintage Burn and the difference was immediate. Clean energy, no heart racing, and I could look at the label and see exactly what I was getting. That experience reinforced why transparency matters. Saving $15 is not worth not knowing what is in your body.

Who Should Buy Vintage Burn

• Men in an active cutting phase who are already training and eating at a deficit
• Lifters who prioritize muscle preservation and do not want an overly aggressive stimulant load
• Anyone who demands label transparency and refuses to take proprietary-blend supplements
• Men who have experienced jitters or crashes from other fat burners and want a cleaner option

Who Should Skip It

• Men not currently in a calorie deficit — fat burners are supplements to a deficit, not replacements for one
• Caffeine-sensitive individuals (or at minimum, start with half a dose)
• Anyone looking for a magic pill without diet and exercise — Vintage Burn supports fat loss, it does not cause it on its own
• Budget buyers who only need the thermogenic basics — caffeine + green tea extract costs less

Where to Buy

Vintage Burn is widely available on Amazon, the Old School Labs website, and select supplement retailers. Amazon typically offers the best pricing and Subscribe & Save discounts.

Frequently Asked Questions

Will Vintage Burn help me lose weight without exercise?

It can slightly increase metabolic rate and fat oxidation, but the effect without a calorie deficit and exercise is minimal. Fat burners are designed to enhance the results of diet and training, not replace them. Without a deficit, no fat burner will produce meaningful fat loss.

How much caffeine is in Vintage Burn?

Old School Labs lists caffeine anhydrous on the label. The exact amount per serving is moderate — less than a strong cup of coffee. Caffeine-sensitive individuals should start with two capsules (half serving) to assess tolerance before moving to the full four-capsule dose.

Can I take it with pre-workout?

Be cautious with stacking. Most pre-workouts contain caffeine, and adding Vintage Burn on top could push your total caffeine intake too high. If you want to use both, take Vintage Burn in the morning and your pre-workout later in the day, or use a stimulant-free pre-workout.

How long should I take Vintage Burn?

Most men use thermogenic fat burners in 8–12 week cycles aligned with their cutting phases. Extended use beyond 12 weeks may lead to caffeine tolerance. Consider cycling off for 2–4 weeks between cutting phases to maintain sensitivity to the active ingredients.

Does it actually preserve muscle?

The chrysin and forskohlii ingredients are included to support favorable hormone balance during calorie restriction, which is one factor in muscle preservation. However, the primary drivers of muscle preservation during a cut are adequate protein intake (0.8–1g per pound of body weight), resistance training, and a moderate calorie deficit. Vintage Burn supports these efforts but does not replace them.

Is it safe for long-term use?

The ingredients in Vintage Burn are generally well-tolerated and safe at the listed dosages. However, continuous use of caffeine-containing products can lead to tolerance. Cycling on and off (8 weeks on, 2–4 weeks off) is the standard recommendation for any caffeine-based thermogenic.

My results after eight weeks on Vintage Burn during a proper cut: I went from 215 to 203 lbs. How much of that was the supplement versus the 500-calorie deficit and consistent training? Impossible to isolate. What I can say is that the cut felt easier than previous ones. Energy stayed consistent, I did not feel depleted during workouts, and I retained most of my strength — my bench only dropped 5 lbs over the entire cut, which is better than usual for me. Was Vintage Burn the reason? It was part of the equation. The transparent label meant I could actually account for what I was taking, and that alone made the experience better.

Final Rating: 4.2/5

Vintage Burn is what a fat burner should be: transparent, research-based, and designed for men who actually train. The full label transparency is not just a marketing gimmick — it is a fundamental respect for the consumer that most fat burner brands fail to match. The primary thermogenic ingredients (green tea extract + caffeine) are among the most evidence-based in the category, and the muscle-preserving additions (chrysin, forskohlii) show that Old School Labs understands their audience.

The premium price and the inclusion of raspberry ketones (limited human evidence) keep it from a higher score. But for men who want a trustworthy cutting-phase thermogenic that delivers clean energy and full ingredient transparency, Vintage Burn is one of the best options available.

Last updated: February 2026. We re-evaluate our reviews regularly based on formula changes, pricing, and reader feedback.