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💊 Medications A–Z

NHS-approved medications — uses, doses, side effects and interactions explained in plain English.

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NHS-sourced information. Always read the patient information leaflet and speak to your pharmacist or GP before starting, stopping or changing any medication.

Our medications library is growing. Below are plain-English guides to six of the most commonly prescribed NHS medications.

M
Diabetes
Metformin
metformin hydrochloride
First-choice tablet for type 2 diabetes. Lowers blood sugar by reducing glucose the liver releases. Taken with meals to reduce stomach upset.
Full guide coming soon
A
Heart & Circulation
Atorvastatin
atorvastatin calcium
A statin to lower cholesterol and reduce the risk of heart attack and stroke. Usually taken once daily at night.
Full guide coming soon
R
Heart & Circulation
Ramipril
ramipril
ACE inhibitor for high blood pressure, heart failure, and kidney protection in diabetes. A dry cough is the most common side effect.
Full guide coming soon
A
Heart & Circulation
Amlodipine
amlodipine besilate
Calcium channel blocker for high blood pressure and angina. Relaxes blood vessels; ankle swelling is common.
Full guide coming soon
L
Hormones
Levothyroxine
levothyroxine sodium
Synthetic thyroid hormone for underactive thyroid. Taken daily on empty stomach; dosage adjusted via TSH blood tests.
Full guide coming soon
S
Mental Health
Sertraline
sertraline hydrochloride
SSRI antidepressant for depression, anxiety, OCD, and PTSD. Takes 4–6 weeks to reach full effect. Never stop suddenly.
Full guide coming soon
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