does b12 help you lose weight

If you’re trying to lose weight, you may have heard about the potential benefits of taking B12 supplements. But does B12 really help with weight loss? In this article, we’ll explore the relationship between B12 and weight loss and whether or not it can truly aid in your weight loss journey.

What is B12?

B12, also known as cobalamin, is a water-soluble vitamin that plays a crucial role in the production of red blood cells and DNA. It also helps maintain healthy nerve function and aids in the metabolism of fats and carbohydrates.

B12 is naturally found in animal products such as meat, fish, eggs, and dairy. However, it can also be found in fortified foods and supplements for those who follow a vegetarian or vegan diet.

B12 and Weight Loss

There is no direct evidence that B12 alone can lead to weight loss. However, there are some potential indirect ways that B12 may contribute to weight loss.

Boosts Energy and Metabolism

B12 supplements

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B12 is essential for the production of red blood cells, which carry oxygen throughout the body. This oxygen is necessary for energy production, and a deficiency in B12 can lead to fatigue and weakness.

By taking B12 supplements, you may experience an increase in energy levels, which can help you stay active and burn more calories. Additionally, B12 plays a role in the metabolism of fats and carbohydrates, which can also contribute to weight loss.

Supports a Healthy Diet

B12 is often found in animal products, which are also rich in protein. Protein is known to help with weight loss by increasing feelings of fullness and boosting metabolism.

By consuming B12-rich foods, you may also be consuming other nutrients that support a healthy diet, such as lean protein, which can aid in weight loss.

May Improve Mood and Reduce Stress

Stress and emotional eating can often lead to weight gain. B12 has been linked to improved mood and reduced stress levels, which may help prevent overeating and promote weight loss.

B12 and Phentermine for Weight Loss

Phentermine is a prescription weight loss medication that is often used in combination with B12 shots. Phentermine works by suppressing appetite and increasing metabolism, while B12 helps with energy production and metabolism.

Average Weight Loss on Phentermine and B12 Shots

Studies have shown that individuals who take phentermine and B12 shots together may experience an average weight loss of 8-10 pounds per month. However, it’s important to note that this weight loss is not solely due to B12, but rather the combination of phentermine and B12.

B12 Shots for Weight Loss Before and After

B12 shots

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While there is no scientific evidence to support the use of B12 shots for weight loss, some individuals claim to have seen results. Before and after photos of individuals who have taken B12 shots for weight loss show a significant decrease in body fat and an increase in muscle mass.

However, it’s important to note that these results may be due to other factors, such as changes in diet and exercise, and not solely because of B12 shots.

How to Take B12 for Weight Loss

If you’re interested in taking B12 for weight loss, there are a few different options to consider.

B12 Supplements

B12 supplements are available in pill form and can be found at most drugstores and health food stores. It’s important to choose a reputable brand and follow the recommended dosage on the label.

B12 Injections

B12 injections are a popular method for those looking to boost their B12 levels quickly. These injections are typically administered by a healthcare professional and can be done weekly or monthly, depending on your needs.

B12 Patches

B12 patches are another option for those looking to increase their B12 levels. These patches are placed on the skin and deliver a steady dose of B12 throughout the day.

Potential Side Effects of B12

While B12 is generally considered safe, there are some potential side effects to be aware of.

Allergic Reactions

Some individuals may be allergic to B12 supplements or injections. If you experience any symptoms of an allergic reaction, such as hives, difficulty breathing, or swelling of the face, seek medical attention immediately.

Nausea and Vomiting

In some cases, B12 supplements or injections may cause nausea and vomiting. If you experience these symptoms, try taking the supplement with food or speak to your healthcare provider about adjusting your dosage.

Interference with Medications

B12 supplements may interfere with certain medications, such as those used to treat diabetes or epilepsy. If you are taking any medications, speak to your healthcare provider before starting B12 supplements.


While there is no direct evidence that B12 alone can lead to weight loss, it may indirectly contribute to weight loss by boosting energy and metabolism, supporting a healthy diet, and improving mood and reducing stress.

When combined with phentermine, B12 may aid in weight loss, with an average weight loss of 8-10 pounds per month. However, it’s important to note that results may vary and B12 should not be relied upon as the sole method for weight loss.

If you’re interested in taking B12 for weight loss, be sure to speak to your healthcare provider first to determine the best method and dosage for your individual needs. With a healthy diet and exercise, B12 may be a helpful addition to your weight loss journey.