The injection is given into a muscle (known as an intramuscular injection). You may have some pain, swelling or itching where your injection was given. However this is usually mild and will wear off quite quickly.
What to expect after getting a B12 shot?
Pain/redness at the injection site, mild diarrhea, itching, or a feeling of swelling all over the body may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.
Do you feel different after B12 injections?
At first, you may need to have the injection a few times a week to boost your levels of vitamin B12. Some common side effects are feeling or being sick and diarrhoea. It’s safe to take for a long time.
Do you feel the effects of a B12 shot immediately?
Since B12 shots are injected intramuscularly bypassing the digestive process, they start to work immediately. Typically, our patients experience positive effects between 24-72 hours after the treatment.
Do you feel tired after B12 injection?
B12 injections may contribute to low potassium levels in your body. Though rare, this reaction can cause muscle cramping, extreme fatigue, and an irregular heartbeat.
Do B12 shots give you energy?
Proponents of vitamin B-12 injections say the shots give you more energy and boost your metabolism, helping you shed unwanted pounds. But unless you have a vitamin B-12 deficiency, vitamin B-12 injections aren’t likely to give you an energy boost.
How fast does B12 injection work?
B12 injections work quickly; they are the most effective way for your body to absorb Vitamin B12. Within 48 to 72 hours, your body will begin to make new red blood cells. For mild deficiencies, you may need two to three injections over several weeks to notice peak impact.
What does low B12 feel like?
Weakness, tiredness, or lightheadedness. Heart palpitations and shortness of breath. Pale skin. A smooth tongue.
Can B12 injections keep you awake?
Will the shots keep me awake at night? Our shots do not contain any stimulants, but it’s generally best to experience a shot earlier in the day (we recommend before 5:00 PM). Getting a shot too late in the day may promote insomnia that night + possibly vivid dreams depending on how sensitive you are.