Common side effects include: Injection site reactions mild pain, redness, swelling, or bruising at the injection site, typically resolving within a few days Headache usually transient and manageable with standard analgesia Nausea or dizziness particularly in the initial treatment phase Skin reactions including itching, mild rash, or acneiform eruptions Temporary urine discolouration red or orange urine is harmless and expected Diarrhoea or flushing usually mild and self-limiting In patients with severe megaloblastic anaemia, low potassium levels (hypokalaemia) may occur during initial intensive treatment, but this is uncommon in routine maintenance therapy
It may lead to symptoms such as tingling, numbness, and muscle problems
Chandy estimates that 1 in 10 people experience this effect
Needle and syringe Sharps disposal container Alcohol and cotton balls Gauze or bandages Vitamin B12 solution The size and length of your needle will depend on the injection site and your body type
Then insert the needle into the center of the muscle and inject slowly