Vitamin b12 how long to take effect

Excess vitamin B12 is delivered to the liver and stored. If you were to ask how long vitamin B12 injections last, the answer can be indefinite especially if you have a steady supply of it. The usual frequency for intramuscular doses of B12 shots is every 10 days, followed by maintenance doses at varying intervals.

After this period, you may be able to administer the injection once per month. This frequency is enough to reverse the signs of vitamin B12 deficiency. Vitamin B12 can be found in the form of cyanocobalamin, hydroxocobalamin, and methylcobalamin. Each of these forms may have different indications and uses.

Consult your doctor on the most appropriate formulation for your condition. Vitamin B12 overdoses are rare. Vitamin B12 has a low level of toxicity as a water-soluble vitamin that is excreted through the urine.

However, certain people with kidney problems may be at a higher risk of toxicity since they may be unable to effectively eliminate vitamin B12 from the body. It is recommended to take the injections as prescribed by your healthcare provider. This way, you do not put unnecessary strain on your body and you benefit from the vitamin b12 injections. Currently, there are standard doses of vitamin B12 recommended by many healthcare professionals. For people with problems absorbing the vitamin, pregnant women, and individuals suffering from mild deficiency, a mcg dose may be recommended.

However, oral contraceptives can reduce the amount of vitamin B12 you absorb from your cyanocobalamin tablets. You can usually help your vitamin B12 levels by increasing the amount of certain foods you eat.

However, this will not help if you have a stomach gastro-intestinal problem that means you cannot absorb vitamin B12 from your gut.

If you eat meat, fish, eggs, milk and dairy foods you should get enough vitamin B12 from your diet. Page last reviewed: 10 March Next review due: 10 March Cyanocobalamin On this page About cyanocobalamin Key facts Who can and cannot take cyanocobalamin How and when to take cyanocobalamin Side effects of cyanocobalamin Pregnancy and breastfeeding Cautions with other medicines Common questions about cyanocobalamin.

About cyanocobalamin Cyanocobalamin is a manufactured version of vitamin B Cyanocobalamin works by increasing your levels of vitamin B You need vitamin B12 to make red blood cells and keep your nervous system healthy. However, you may also need vitamin B12 injections at first to boost your levels.

Some people may be able to stop taking cyanocobalamin when their vitamin B12 blood levels are back to normal. You may have regular blood tests while taking cyanocobalamin, to monitor the levels of vitamin B12 in your blood. Most adults and children aged 2 years and over can take cyanocobalamin. Dosage The amount of cyanocobalamin you need depends on the level of vitamin B12 in your blood and why your levels are low. The usual dose for: diet-related deficiency is 50 micrograms to micrograms, taken once a day B12 deficiency not caused by your diet is one to two 1, microgram tablets, taken once or twice a day — this is usually if you cannot have vitamin B12 injections In children the doses may be lower.

How to take it Swallow prescribed cyanocobalamin tablets whole with a drink of water. For cyanocobalamin supplements that you buy, follow the instructions that come in the packet. Will my dose go up or down?

What if I forget to take it? What if I take too much? Taking an extra dose of cyanocobalamin tablets is unlikely to harm you.

Urgent advice: Contact for advice now if:. Most people do not have any side effects taking cyanocobalamin tablets. Serious allergic reaction In rare cases cyanocobalamin can cause a serious allergic reaction anaphylaxis. Information: You can report any suspected side effect using the Yellow Card safety scheme.

Visit Yellow Card for further information. Get it here. Close Top Banner. But full correction may take up to 3 months. All the best. No prescription needed. Free worldwide shipping.

Settling for an over the counter B12 supplement may seem like an easy way to fight your B12 deficiency, but B12 shots are a faster and equally effective way of meeting your B12 quota.

B12 shots immediately start working as the nutrients are injected directly into the bloodstream. This bypasses the process of digestion and guarantees efficacy for patients who have difficulty absorbing nutrients through the stomach. B12 shots have a headstart over oral supplements, which means patients see results sooner than individuals who rely on vitamin absorption through digestion.

By The Hydration Room September 11, In simpler terms, B12 shots will produce results faster than B12 oral supplements.

Why You Should Choose a B12 Shot Over an Oral Supplement Settling for an over the counter B12 supplement may seem like an easy way to fight your B12 deficiency, but B12 shots are a faster and equally effective way of meeting your B12 quota.