Dose vs Portion

When to use each in English, with meaning, register, and examples.

 DosePortion
MeaningA small amount of medicine taken at one time.a part of something larger
CEFR levelC1B2
Part of speechnounnoun
Usage notesUsed primarily in medical contexts to describe the amount of medication. Less common in informal speech. Be careful using it outside of health-related conversations.Use 'portion' when you refer to a part of food, quantity, or share. It's neutral and suitable for everyday conversations and formal writing. Avoid using it when discussing something that can't be divided easily.

Frequently asked questions: Dose vs Portion

What's the difference between "Dose" and "Portion"?

"Dose" means: A small amount of medicine taken at one time. "Portion" means: a part of something larger

When should I use "Dose" and "Portion"?

They can all be used in everyday English.

Are "Dose" and "Portion" the same CEFR level?

"Dose" is at C1, "Portion" is at B2 on the CEFR scale.

Related comparisons