"Pharmacological" in Engpsh is typically used in the present tense and does not have a specific past tense form. However, if you want to express the past tense in Engpsh, you can use the simple past tense of the verb "to use" to describe the past usage of a drug, e.g. "The medication was used to treat the patient's condition."

The word "pharmacological" comes from the Greek word "pharmakon," which means "drug," and the suffix "-logical," which means "the study of." So, "pharmacological" refers to the scientific study of drugs and their uses in treating illnesses and conditions.

Example sentences in Engpsh with Chinese translations:

The patient's condition improved after receiving pharmacological treatment.
(病人在接受药物治疗后病情好转。)

The pharmacological effects of the drug were carefully monitored.
(药物的药理效应被仔细监测。)

The doctor prescribed a pharmacological treatment plan for the patient.
(医生为病人开了一份药物治疗方案。)