A stock solution of 1 to 2 mg/mL in sterile water is the most common starting point, then diluted into culture medium or assay buffer
My daughter is in the same position having bad acne after injections
This may let your body take it in better and go with your body's detox schedule
The most common research vials contain 250-500mg of NAD+
Dosage, Safety and NHS Guidance on Glutathione There is currently no established therapeutic dose of glutathione for fatty liver disease, as it is not a recognised treatment within NHS or NICE guidelines

Seek prompt medical advice if you experience: Severe or rapidly worsening joint pain that significantly impairs function or mobility A hot, swollen, very painful joint with fever this could indicate septic arthritis requiring SAME-DAY emergency hospital assessment Symptoms of severe allergic reaction after B12 injection (breathing difficulty, facial/tongue swelling, widespread hives, dizziness/collapse) call 999 immediately Systemic symptoms such as unexplained weight loss, night sweats, or profound fatigue Neurological symptoms including weakness, numbness, balance problems, or cognitive changes Symptoms affecting multiple joints simultaneously, particularly if symmetrical (both hands, both knees) Morning stiffness lasting more than 30 minutes , which may suggest inflammatory arthritis Your GP will conduct a thorough clinical assessment, including detailed history-taking and physical examination