capsule glutathione Reduced L-Glutathione 250 mg Vegetable Capsules Amen Glutathione - SR+ -

This has nothing to do with b12 status and everything to do with excessive caloric deficit and insufficient protein intake relative to the rate of weight change

Safety and Efficacy of Approved and Unapproved Peptide Therapies for Musculoskeletal Injuries and Athletic Performance. doi:10.20944/preprints202512.1011

Erslev, A

You have swelling or pain in your joints

Suitable A-Z Vitamins and Minerals Suitable Calcium (with Vitamin D) supplements Suitable Iron supplements Suitable Vitamin D supplements Baricol Complete Thiamine If you experience prolonged vomiting and/or poor dietary intake or excessive weight loss, then contact your dietitian or GP as you may require additional supplements of Thiamine and Vitamin B Co strong

Glycine supplements are generally considered safe