Nature 2015;528:1236
However, rPeptide runs no public, lot-matched COA library, leaning on batch-to-batch consistency instead, with specs supplied on request

Technique Ultrasound-guided approach (preferred) Local Corticosteroid Injection at tendon sheath under Ultrasound guidance (see Shoulder Ultrasound) Approached in-plane to linear Ultrasound probe (probe short axis to anterior Shoulder - home position) Do not inject within tendon (and avoid circumflex artery within groove) Technique Landmark-based approach Images Landmarks Identify bicipital tendon in bicipital groove (proximal Humerus) Mark point of maximal tenderness over groove Injected with sterile technique (with Betadine preparation of skin) Direct needle parallel to bicipital groove (vertically oriented) Needle enters skin at 30 degrees oriented superiorly Do not inject bicipital tendon Infiltrate area around groove, but not into tendon Flow resisted when needle is inside tendon Withdraw needle slightly and retry Continue to withdraw until not in tendon Complications Bicipital tendon rupture Associated with intratendinous injection Do not inject bicipital tendon References

However, body weight is affected by many factors beyond peptide use
As a note, the common side effects of excess vitamin intake include flushing, diarrhea, nausea, and vomiting
The findings appear to support injected glutathione as a potential therapy, but there is little evidence about oral supplementation