Before receiving B 29 AQ 1500MCG PREFILLED SYRINGE(PFS), inform your doctor if you have Leber's disease (inherited form of vision loss) and/or suffering from low potassium level (with associated signs such as muscle twitches/cramps, low blood pressure), optic nerve disease (swelling and nerve damage to the eyes), kidney and/or liver problems
For individuals receiving B12 injections for severe deficiency, there have been isolated reports of hypokalaemia (low potassium) during initial treatment, as rapid cell production consumes potassium
Certain medications , particularly those used for treating acid reflux, can further hinder absorption
For vegans, supplementing B12 is vital
At this concentration, a 500 mcg dose equals 0.2 mL (20 units on an insulin syringe)