The U-500 strength of Humulin R comes in two forms: 20-mL vials that you’ll use with insulin syringes 3-mL disposable, prefilled injection pens called a KwikPens Note: Humulin R U-100 is ...

Insulin isophane suspension (NPH) (human, rDNA origin) 100 Units/mL; inj. Humulin 70/30 lowers blood ... Do not reuse or share pens, needles, or syringes between patients, even if the needle ...