acetyl l carnitin 500 mg kapseln ZeinPharma® 2x60 St ACETYL L-CARNITINE 500 mg
Description
Its proprietary formula ensures that active ingredients remain stable and are delivered directly to the skin for optimal results without irritation

J Intern Med (2015) 277:71726

I would not wait either

The critical problem with U40: If you used a U40 syringe for a U100 solution, you would automatically inject 2.5 times too much
The supportive research is overwhelmingly preclinical rat and cell-culture studies of the individual peptides, not randomized human trials of the blend