die Medizin
medicine
The science of preventing, diagnosing, and treating diseases and injuries.
Sie studiert Medizin, weil sie später als Ärztin arbeiten möchte.
She is studying medicine because she wants to work as a doctor later.

medicine
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medicine
The science of preventing, diagnosing, and treating diseases and injuries.
Sie studiert Medizin, weil sie später als Ärztin arbeiten möchte.
She is studying medicine because she wants to work as a doctor later.

You can recognize the meaning of 'Medizin' (medicine) from the verb. Verbs like 'studieren' (to study) or 'praktizieren' (to practice) refer to the science. Verbs like 'einnehmen' (to take), 'verschreiben' (to prescribe), or 'brauchen' (to need) refer to the medication.
Mein Bruder studiert Medizin in Heidelberg.
My brother is studying medicine in Heidelberg.
The adjective for 'die Medizin' (medicine) is 'medizinisch' (medical). It is used to describe things related to the healing arts, for example 'eine medizinische Behandlung' (medical treatment) or 'medizinisches Personal' (medical staff).
Für diesen Job braucht man eine medizinische Ausbildung.
For this job, you need medical training.
When 'Medizin' (medicine) refers to the science, typical combinations are 'Medizin studieren' (to study medicine), 'die moderne Medizin' (modern medicine), or specialties such as 'die innere Medizin' (internal medicine) and 'die alternative Medizin' (alternative medicine).
Die Fortschritte in der modernen Medizin sind beeindruckend.
The advances in modern medicine are impressive.
When it refers to a medication, 'Medizin' (medicine) is often combined with verbs like 'einnehmen' (to take), 'verschreiben' (to prescribe), or 'wirken' (to work / take effect). You can also say 'Medizin aus der Apotheke holen' (to get medicine from the pharmacy).
Du musst die Medizin regelmäßig einnehmen, damit sie wirkt.
You have to take the medicine regularly so that it works.
medication
'die Medizin' and 'das Medikament' can both mean a remedy that helps with an illness or symptoms. In this sense, they are often very similar. However, 'Medikament' is more precise when talking about tablets, drops, ointments, or similar remedies. 'Medizin' is also possible in everyday language, but it can also mean the science of illnesses and their treatment. This can lead to confusion. When you clearly mean a specific remedy, 'Medikament' is usually less ambiguous.

Der Arzt sagt, dass ich die Medizin nach dem Essen nehmen soll.
The doctor says that I should take the medicine after eating.
Für ihre Reise hat Anna ein wichtiges Medikament in die Tasche gepackt.
For her trip, Anna packed an important medication in her bag.