Vitamin B12 Injection
vs IV Drip

A vitamin B12 injection into a muscle is the usual medical treatment for a diagnosed B12 deficiency, while an IV drip with B12 is a hydration and vitamin top-up that contains B12 alongside other vitamins. The two serve different purposes. B12 deficiency is diagnosed with a blood test and managed by a doctor, who looks for the cause and sets a schedule of injections or tablets. A drip is something people choose for convenience and a general top-up. At mobivIVe, vitamin B12 (as methylcobalamin) is in several of our drips, including The Babelas Beater (R1,250), The Kick-Start (R1,350), V8 (R1,700) and The Royal IV (R2,650). This guide explains what B12 does, how a deficiency is diagnosed and treated, what a drip offers, and why anyone who suspects a deficiency should see their doctor for testing first.

This guide was written under the medical direction of Dr Chris van Zyl (registered as M.C. van Zyl, HPCSA MP0287067), mobivIVe’s medical director. Our IV drips are given by registered nurses after a medical screening questionnaire.

What is vitamin B12 and what does it do?

Vitamin B12 is a nutrient the body needs to make red blood cells, keep the nervous system healthy, release energy from food and use folate. The NHS says adults aged 19 to 64 need about 1.5 micrograms a day of vitamin B12, and that people who eat meat, fish or dairy should usually get enough from their diet. Good sources include meat, fish, milk, cheese, eggs and some fortified breakfast cereals. Because B12 is not found naturally in fruit, vegetables or grains, vegans may not get enough of it. Beyond food, B12 comes from supplements or, when a doctor prescribes them, injections.

What is the difference between a B12 injection and an IV drip with B12?

A B12 injection is a targeted medical treatment for a diagnosed deficiency, while an IV drip with B12 is a broader vitamin top-up that you choose for yourself. Here is how they compare:

In South Africa injectable vitamins are Schedule 3 medicines, so both are given only by trained health professionals. A drip does not replace testing, diagnosis or a treatment plan from your doctor, and it is not designed to correct a deficiency.

How is a vitamin B12 deficiency diagnosed?

A B12 deficiency is diagnosed by a doctor, usually based on your symptoms and a blood test. The NHS says a GP can often diagnose B12 or folate deficiency anaemia from your symptoms and blood test results, and that it should be diagnosed and treated as soon as possible. Symptoms the NHS lists include extreme tiredness, low energy, pins and needles, a sore and red tongue, mouth ulcers, muscle weakness and problems with memory or judgement. These symptoms have many possible causes, which is why a test matters more than guesswork. If you recognise any of them, see your GP rather than booking a drip.

How is a B12 deficiency usually treated?

Most people with a B12 deficiency are treated with B12 injections into a muscle, prescribed and managed by a doctor. A 2018 Cochrane review notes that most people with B12 deficiency are treated in primary care with intramuscular B12. The NHS explains that injections are given every other day at first, usually as hydroxocobalamin, and that when the deficiency is not caused by diet, injections are often needed every 2 to 3 months for life. When the cause is diet, daily B12 tablets between meals or a twice-yearly injection may be used instead. Your doctor decides which plan suits you and checks your progress.

What does an IV drip with B12 offer?

A drip with B12 offers a hydration and vitamin top-up in one sitting, with B12 given alongside other vitamins and a bag of saline. At mobivIVe, B12 is included as methylcobalamin, one of the forms of vitamin B12, in several drips. People choose them for convenience: a nurse places a small cannula, the drip runs for about 45 minutes, and you can relax in one of our lounges or at home. Every drip comes with a choice of a 200ml or 1000ml saline bag at no extra cost. A drip is not a treatment plan for a deficiency: it does not include the blood tests, diagnosis or follow-up injections that a doctor provides.

Which mobivIVe drips contain vitamin B12?

Vitamin B12 is in several of our drips, including The Babelas Beater, The Kick-Start, V8 and The Royal IV. The Babelas Beater (R1,250) adds B12 and thiamine to glutathione, vitamin C and the Myers cocktail, and is chosen by people who want to feel refreshed after a late night. The Kick-Start (R1,350) pairs B12 with high-dose vitamin C, glutathione, selenium and zinc, and is popular during a demanding week. V8 (R1,700) adds L-carnitine and glutamine and is chosen by people in a heavy training block. The Royal IV (R2,650) is our all-in-one drip. Each takes about 45 minutes. See more on our immune drip page.

Should I have a drip if I think I am low in B12?

No, if you suspect a B12 deficiency, see your doctor for a blood test first rather than relying on a drip. A deficiency needs a diagnosis and often a search for the cause, for example pernicious anaemia, where the body cannot absorb B12 properly, or a diet without animal products. A doctor can then prescribe the right treatment, recheck your levels and decide how long treatment is needed. Tell your doctor about any recent drips or supplements before a blood test. If you are already on B12 injections, keep to your doctor’s plan and never replace prescribed treatment with a drip.

Is an IV drip a better way to get B12 than injections or tablets?

Not for a deficiency: injections and, for some people, tablets are the established medical options, and a drip is not a substitute. The Cochrane review mentioned above compared oral and intramuscular B12 for deficiency, and found low-quality evidence that high-dose tablets normalised blood B12 levels about as well as injections, at a lower cost. Research on IV vitamin drips for healthy people is limited, and most studies look at specific medical uses. For a wider look at absorption, cost and risks, read our guide IV drip vs oral vitamins. We do not claim that any drip treats, cures or prevents a condition.

Who should check with us first, and how do I book?

Anyone with a heart, kidney or liver condition, anyone who is pregnant, and anyone on chronic medication, including B12 injections, must tell us before booking a drip. Every drip is given by a registered nurse after a medical screening questionnaire, under the protocols of our medical director, Dr Chris van Zyl. You can walk into our lounges in Sunninghill (Johannesburg), Stellenbosch or Queenstown (Komani), or a nurse can come to your home, office, hotel or event in Johannesburg, the Winelands or Cape Town. Book online at book.mobivive.co.za and choose a lounge, or “Your Home, Office, etc.” for a mobile visit. If you are unsure which drip suits you, WhatsApp or call us on 061 509 6038.