药片用英文怎么说

"Pill" is the most commonly used term for "药片" in Engpsh.

Etymology: The word "pill" is derived from the Latin word "pilus" which means "small ball".

Examples:

I need to take a pill for my headache.
(我需要服用一片药来治疗头痛。)
The doctor prescribed me a bottle of pills for my back pain.
(医生给我开了一瓶药片来治疗背痛。)
She keeps a box of pills in her purse for emergencies.
(她随身携带一盒药片以备不时之需。)