Can different peptides be mixed together in one syringe?

The original poster lists morning and evening peptide stacks and asks if they can all go into one syringe. One reply clarifies the question while another warns against drawing from multiple vials with the same needle due to blunting and states that only certain peptides may be combined in one vial. Specific night-time peptides are said to be compatible together while melanotan should stay separate; morning compatibility questions remain open.

• Mixing peptides from separate vials into one syringe is discouraged because the needle becomes blunt.
• Some peptides can safely share a vial while others cannot.
• Night stack of GHK, KPV and BPC is considered mixable; melanotan should be kept apart.
• Semax and Selank compatibility is left unconfirmed.

Whether Semax and Selank can be combined with the rest of the listed morning peptides.

Nothing here is advice.