Rapid-acting insulin • Humalog → Lispro • Novolog → Aspart • Apidra → Glulisine Short-acting insulin • Humulin R / Novolin R → Regular insulin Intermediate-acting insulin • Humulin N / Novolin N → NPH Long-acting insulin • Lantus → Glargine • Levemir → Detemir Ultra-long acting insulin This is now considered a separate class in modern classifications: • Tresiba → Degludec (duration >42 hours) • Toujeo → Glargine U-300 (longer & flatter than Lantus) Premixed insulin • 70/30 (NPH Regular) • 75/25