- Acarbose
- Accuhaler
- ACE inhibitors
- Aciclovir (cream)
- Aciclovir (tablets)
- Acyclovir (tablets)
- Adalimumab
- Adapalene
- Alcohol and medicines
- Alendronate
- Alendronate plus vitamin D
- Allopurinol
- Alprazolam
- Amiodarone
- Amisulpride
- Amitriptyline
- Amlodipine
- Amorolfine
- Amoxicillin
- Amoxicillin + clavulanic acid
- Anaesthetics
- Anastrozole
- Angiotensin receptor blockers (ARBs)
- Anoro Ellipta®
- Antacids
- Antibiotic resistance
- Antibiotic resistance – prevention
- Antibiotics
- Anticoagulant – how to choose
- Anticoagulants
- Antidepressants
- Antidepressants in pregnancy
- Anti-epileptic medication
- Antihistamines
- Antipsychotics
- Antipsychotics and older people
- Antiretroviral therapy
- Antiseptics
- Aqueous cream
- Aripiprazole
- Aspirin – low dose
- Atenolol
- Atorvastatin
- Augmentin®
- Azathioprine
- Azithromycin