
TMG, or Trimethylglycine, is a naturally occurring compound derived from the amino acid glycine, best known for supporting healthy homocysteine levels, heart health, and methylation. Found in foods like beets and spinach, TMG is also known as betaine, a vital nutrient that contributes to energy metabolism and cellular balance. Many people choose to take TMG supplements to maintain cardiovascular and liver health, especially when diet alone doesn’t provide enough.
At Longevity Box, our TMG supplement delivers 750 mg per capsule, a balanced dosage of TMG that supports both heart and liver health. Each capsule is independently lab-tested and backed by a 700-day purity guarantee, ensuring that every amount of TMG you take contributes safely to your wellbeing.
The role of TMG in the body centres on its ability to act as a methyl donor, supplying essential methyl groups for various biochemical reactions. These include maintaining homocysteine levels in the blood, supporting cardiovascular health, and promoting cellular health through efficient DNA repair. This process is vital because high levels of homocysteine are associated with an increased risk of heart disease.
In this guide, we’ll explore the benefits of TMG, how TMG works, its potential side effects, and why consistent TMG supplementation may enhance your overall well-being. We’ll also discuss the recommended dosage and how to take TMG safely for the best results.
What Is TMG and How Does It Work?
TMG, short for Trimethylglycine, is an amino acid derivative also known as betaine. It plays an essential part in supporting methylation, the biochemical process responsible for energy production, liver detoxification, and DNA maintenance. TMG acts as a methyl donor, meaning it provides methyl groups that enable critical reactions in the body. Through these reactions, TMG helps regulate homocysteine levels, which supports heart health and protects against vascular damage.
From a nutritional standpoint, TMG is also found naturally in beets, spinach, quinoa, and shellfish. These foods are rich in glycine betaine, but many people still find it helpful to take TMG supplements to maintain consistent intake.
Studies show that TMG contributes to better liver function, improved cardiovascular performance, and protection against oxidative stress. Research has shown that TMG supplementation may also help improve endurance, mood balance, and detoxification processes within the liver.
Methylation and Homocysteine Regulation
Methylation is one of the body’s most critical cellular functions, influencing everything from mood to energy levels. During methylation, TMG works by donating a methyl group to homocysteine, converting it into methionine, an amino acid that plays a part in protein synthesis and antioxidant production. This process helps reduce homocysteine levels, supporting cardiovascular health and potentially helping to improve heart health over time.
TMG may also work in synergy with nutrients like folate and vitamin B12, which assist in maintaining optimal methylation cycles. The intake of choline and betaine further complements these functions, offering a combined effect that benefits both heart and liver health.
Recent studies suggest that TMG supplements can improve methylation efficiency and reduce oxidative stress, both of which contribute to long-term health and longevity. These findings are supported by evidence from betaine supplementation on cardiovascular markers, which highlights how TMG may reduce arterial stiffness and support better vascular elasticity.

Key Health Benefits of TMG
TMG (Trimethylglycine) has caught the attention of researchers for its broad health benefits, from heart health to liver support and overall metabolic balance.
Both human and animal studies suggest that TMG may help regulate homocysteine levels, reduce oxidative stress, and promote long-term well-being. In simple terms, this nutrient, also known as betaine, acts like a cellular “caretaker,” keeping key systems in balance and protecting your organs from unnecessary strain.
Cardiovascular Health
If you’re thinking about heart health, TMG deserves a spot on your radar. One of its main jobs is keeping homocysteine levels in check, a crucial factor, since high levels of homocysteine can increase the risk of heart and blood vessel problems.
Here’s how TMG helps:
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It converts homocysteine into methionine, reducing build-up in the blood.
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This process supports methylation, a key biochemical cycle for healthy arteries.
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Over time, it can help maintain elasticity in your blood vessels and improve circulation.
 
Clinical research backs this up. One review in the NCBI found that betaine supplementation on cardiovascular markers effectively lowered blood levels of homocysteine and improved vascular function.
Other studies suggest that TMG supplements may help calm inflammation inside arteries and protect endothelial cells (the delicate lining of blood vessels).
Nutrients like choline and betaine often work together. The intake of choline and betaine supports methylation, lipid metabolism, and overall vascular integrity, making TMG supplementation an even smarter choice for protecting your heart.
Liver and Metabolic Support
Your liver quietly handles hundreds of essential tasks daily, from detoxifying waste to metabolising fats. TMG acts as a gentle ally here, supporting liver performance and fat metabolism.
Here’s what the science says:
A human trial on patients with non-alcoholic fatty liver disease (NAFLD) found that taking TMG per day helped reduce liver fat, ease liver stiffness, and normalise enzyme levels.
That’s because TMG supports the liver’s ability to process and export fat efficiently, keeping things running smoothly.
Studies show that TMG also boosts antioxidant enzyme activity, helping your liver cope with oxidative stress. And in those with insulin resistance, TMG may improve how the body uses and stores energy.
Interestingly, the effects of chronic betaine supplementation go beyond liver support; they’re linked to better inflammation control and overall cellular health.
So, using TMG regularly isn’t just about detoxification; it’s also about protecting your body’s metabolic “engine” for the long term.
Other Potential Benefits of TMG
While heart and liver function are the most studied areas, researchers continue to explore other potential health benefits of TMG supplementation. The compound’s role in hydration, neurotransmitter synthesis, and oxidative defence means its range of potential health benefits extends far beyond just cardiovascular support.
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May enhance exercise performance by maintaining cellular hydration and supporting energy metabolism.
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Supports mood balance through methylation-linked neurotransmitter production, such as dopamine and serotonin.
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Acts as an antioxidant, helping reduce oxidative stress and protect DNA from damage.
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May improve fertility and DNA integrity under physical or environmental stress conditions.
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Potential role in cancer prevention by reducing abnormal cell proliferation and supporting normal gene expression.
 
These findings suggest that TMG could play an integral role in maintaining physical and mental resilience. Clinical trials continue to evaluate how chronic betaine supplementation on performance and antioxidant capacity may supporting long-term health and longevity.
In essence, TMG has been shown to provide numerous health benefits of TMG beyond cardiovascular protection, making it a versatile compound for anyone aiming to optimise metabolism, energy, and cellular health.
Recommended Dosage and How to Take TMG
When it comes to taking a TMG supplement, consistency matters more than complexity. The right dosage of TMG can support methylation, protect your heart, and maintain balanced homocysteine levels, without overwhelming your system.
The good news? You don’t need massive doses to see benefits. Most studies and clinical reviews agree that modest daily intake delivers the best results over time.
Typical Dosage Guidelines
For most adults, the ideal range falls between 500–1000 mg per day. At Longevity Box, each capsule provides 750 mg of TMG, carefully chosen as a balanced middle ground, strong enough to support heart and liver health, yet gentle on the digestive system.
Here’s a quick reference:
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General health: 500–1000 mg per day
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Longevity Box TMG supplement: 750 mg per capsule, once daily
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For high homocysteine levels: consult your GP or healthcare provider for an adjusted plan
 
Always check with your doctor before starting a TMG supplement, especially if you’re taking medication used to treat mild heart or liver conditions.
Best Practices for Taking TMG Supplements
To make the most of your TMG supplementation, a few simple habits can go a long way:
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Take TMG in the morning – It supports methylation during active daytime hours when energy demand is higher.
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Can be taken with or without food – Go with what feels most comfortable for your digestion.
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Combine with vitamin B12 and folate – These nutrients work alongside TMG to keep homocysteine levels healthy.
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Stay hydrated – Because of its osmolyte effect, TMG helps cells maintain water balance; proper hydration improves its benefits.
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Consult your GP – Especially if you’re on cardiovascular or liver-supporting medications.
 
For those new to supplementation, start with half a dose for a few days to let your body adjust before taking the full recommended dosage.
Potential Side Effects and Precautions
TMG supplements are generally considered safe and well-tolerated when taken within the recommended range. Still, as with most nutrients, too much of a good thing can cause mild discomfort.
Common side effects of TMG are usually digestive, things as temporary bloating or nausea. These side effects may include mild gastrointestinal symptoms that tend to subside once your body adjusts or if you lower the dose slightly.
Rarely, TMG could increase cholesterol levels in individuals with existing lipid concerns. A few users have also reported mood changes when consuming very high doses, although this remains uncommon.
Overall, supplements are generally considered safe within the studied range. If you ever experience any side effects, it’s best to pause and speak with your GP, especially if you have existing health conditions or are taking prescription medication.
Natural Sources of TMG
Before reaching for a supplement, it’s worth knowing that TMG (also known as betaine) naturally occurs in a variety of foods. These sources not only provide glycine betaine but also come packed with vitamins and antioxidants that contribute to overall health.
Here are some of the best natural options:
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Beets: The richest natural source, where the compound was first discovered.
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Spinach: High in nutrients and a natural source of betaine TMG.
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Quinoa: A plant-based option that supports daily intake of TMG.
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Shellfish (like shrimp): Provide both TMG and vital trace minerals.
 
A diet that includes these foods can significantly decrease the TMG content gap in your system, but reaching therapeutic levels through diet alone can be difficult. That’s where taking a TMG supplement can help maintain consistent levels for methylation and cardiovascular health support.
Research shows that TMG supplementation works best as part of a balanced lifestyle, complementing a nutrient-rich diet, regular exercise, and good hydration habits.
Frequently Asked Questions
What are the top benefits of TMG supplements?
TMG, also known as betaine, supports heart and liver health, helps regulate homocysteine levels, and promotes healthy methylation. The effects of betaine also include improved energy, endurance, and antioxidant protection for long-term wellbeing.
How does TMG affect homocysteine and heart health?
TMG has been linked to lower homocysteine levels, reducing strain on the heart and blood vessels. The effects of betaine supplementation show better circulation and improved cardiovascular balance, especially when combined with dietary choline and betaine.
Can TMG help with exercise performance?
Yes, TMG may be more efficient at improving hydration and endurance compared to many other nutrients. It supports energy metabolism and may affect insulin resistance by helping muscles use glucose more effectively.
What are the side effects of TMG?
Most people tolerate TMG well, but mild stomach discomfort or bloating can occur at high doses of TMG. TMG supplements are not recommended for people with unmanaged cholesterol, so check with your GP before use.
Is TMG safe for long-term use?
Yes, research shows TMG can enhance cardiovascular and liver health safely over time. However, to ensure the safety and long-term effects, it’s wise to monitor progress and understand how TMG may affect your individual health needs.
Conclusion
TMG (Trimethylglycine) stands out as one of the most researched and reliable compounds for supporting long-term wellbeing. By acting as a methyl donor, it helps regulate homocysteine levels, promote heart health, and protect liver function, three pillars of longevity and vitality. Its role in methylation also links it to improved mood balance, cognitive clarity, and energy production, making it a smart choice for anyone focused on preventative health.
When taken within the clinically supported range of 500–1000 mg per day, TMG has been shown to be both safe and effective. Regular intake can help maintain the body’s natural repair processes and optimise cellular performance. While food sources like beets and spinach contribute beneficial amounts, a high-quality TMG supplement provides the consistency most people need to experience real results.
At Longevity Box, our 750 mg TMG supplement delivers this balance perfectly — combining purity, science, and simplicity in every capsule. Each batch is third-party tested and backed by our 700-day purity guarantee, giving you peace of mind with every dose.
For those serious about improving energy, supporting cardiovascular function, and protecting long-term health and longevity, TMG may be the missing link in your wellness plan. Explore our range today at Longevity Box and take one simple step towards a stronger, healthier future.