You may feel a slight burning sensation when the shot administered but its usually no more painful than a mosquito bite
B is crucial for the metabolism of fats, drugs, and steroids and for the activation of other vitamins (it helps convert vitamin B to its active form and aids the conversion of tryptophan to niacin)
Vitamin B12 (cyanocobalamin) dosing, indications, interactions
Publicly reported experiences often suggest a pattern of initial curiosity, followed by stomach cramps, a hangover feeling of sluggishness, and abandonment of the routine within a week
Cancer history or are on multiple medications without medical oversight
Seek emergency medical help immediately (call 999 or attend your nearest A&E) if you experience any of the following after injecting an unlicensed compound: Sudden swelling of the face, mouth, or throat