At optimal concentrations, GHK-Cu increases mRNA production for collagen types I and III, elastin, proteoglycans, and glycosaminoglycans, while laboratory studies show that topical application for 12 weeks improves collagen production in 70% of subjects compared to 50% with vitamin C and 40% with retinoic acid
Regulatory toxicology Xu et al
If you get a lump or swelling in your neck, hoarseness, trouble swallowing, or shortness of breath, tell your healthcare provider, as these may be symptoms of thyroid cancer
What are the symptoms of vitamin B and B12 deficiency
Vitamins are also used to create skin and beauty products
Supply math (doses per vial) At once-daily dosing, the 10 mg vial covers roughly nine weeks of research use, while the 50 mg vial (at its larger 2.5 mg documented dose) covers about twenty days