Vitamin B12 Shots Do Not Boost Energy for Those With Adequate Levels
Vitamin B12 injections sold at med spas for up to $75 do not boost energy levels for people who already have adequate vitamin levels. While the nutrient is essential for red blood cell formation and nerve function, extra doses offer no benefit to individuals without a diagnosed deficiency.
- Vitamin B12 shots cost med spas less than $1 each but retail between $25 and $75, appealing to consumers seeking a quick pick-me-up.
- Approximately 4% of US adults have low B12 levels, with deficiencies more common in adults aged 60 and older, vegans, and individuals taking metformin or long-term acid-reducing drugs.
- High oral doses of vitamin B12 raise blood levels just as effectively as injections for most patients, and cost less.
Vitamin B12 is found naturally in animal foods such as meat, fish, eggs, and dairy, and is added to some breakfast cereals and nutritional yeasts. It helps the body make red blood cells and DNA, keeps nerves working properly, and plays a role in turning food into energy, which is where its reputation as an energy booster originates.
When people do not have enough B12, they can develop anemia, memory problems, depression, and fatigue, Andrea Dean, a hematologist at Loyola University medical center in Chicago, said. If levels are seriously low, individuals can also develop numbness and tingling in their hands and feet.
Who Runs Low on the Nutrient
Eating foods rich in vitamin B12 is not always enough to ensure adequate levels because the stomach must produce sufficient acid and a protein called intrinsic factor to absorb the vitamin. When people have B12 deficiencies despite a balanced diet, it is often because they have a condition that reduces stomach acid production, such as gastritis, or pernicious anemia, an autoimmune condition in which the stomach stops making intrinsic factor.
Roughly 4% of American adults experience inadequate B12 concentrations, with older individuals aged 60 and above facing a higher prevalence of deficiency. Other risk factors include weight loss or stomach surgery, digestive conditions like celiac or Crohn’s disease, and alcohol overuse, while taking the diabetes drug metformin or long-term acid-reducing medications can also lower B12 levels.
The Financial Appeal of Med Spa Injections
Addressing the deficiency can bring back vitality for individuals experiencing tiredness or cognitive sluggishness brought on by insufficient B12 amounts. However, if B12 levels are already adequate, getting more will not make a person feel less worn out or improve athletic performance, with Dean comparing it to filling a car with gas when the tank is already full.
Some people who feel more energetic after a B12 shot may be experiencing a placebo effect, and Dean said that “some of this is just all mental.” For med spa owners, the appeal is financial, as shots cost a typical US spa less than $1 apiece and are sold to consumers for $25 to $75 each, generating substantial profits when patients return for weekly injections.
When to Seek Medical Testing
Fatigue has many possible causes, including poor sleep, low thyroid hormone, and low iron, meaning “it’s not just B12,” Dean said. A B12 level is a simple blood test ordered by a primary care doctor, though patients in many US states and the UK can also order one online through commercial labs.
Results can be tricky to interpret because a person can be deficient even when a lab result looks normal, with most labs considering levels low if they are less than 200 or 250 pg/mL, while Dean treats anyone with a level below 400 pg/mL. For borderline cases, doctors can order two additional blood tests called methylmalonic acid and homocysteine to help confirm a deficiency.
Oral Supplements Versus Clinical Shots
B12 can be taken as a pill or given as a shot, with injections delivering the vitamin into a muscle or under the skin to skip the gut entirely. Shots remain the best choice for people with severe deficiency, nerve symptoms, or conditions like pernicious anemia that prevent absorption.
When someone has nerve symptoms, “we don’t play around,” Dean said. For many others, high doses of oral B12 raise blood levels about as effectively as injections and cost less.
Disclaimer: The information provided in this article is for educational and scientific communication purposes only and does not constitute medical advice. Always consult with a qualified healthcare provider regarding any medical condition, diagnosis, or treatment plan.