Hydroxychloroquine
Also known as: HCQ
Hydroxychloroquine is used for rheumatoid arthritis and lupus. It needs regular eye checks with long use.
Common brands
- HCQS
Dosage forms
- Tablet
Uses
- Rheumatoid arthritis
- Lupus
- Malaria (selected cases)
How it works
Modulates the immune system.
How to take
Take with food as prescribed; yearly eye checks after 5 years of use.
Common side effects
- Nausea
- Stomach upset
- Headache
Serious side effects — get medical help
- Retinal damage
- Heart rhythm problems
- Low blood sugar
Who should not take it
- Existing retinal disease
- Heart rhythm disorders
Interactions
- QT-prolonging drugs
- Diabetes medicines
- Antacids
Pregnancy & breastfeeding
Often continued in pregnancy for lupus under specialist care.
Alcohol & driving
No specific restriction.
Storage
Store below 30°C.
Used for these conditions
Prescribed by
Brands available in India
Frequently asked questions
What is Hydroxychloroquine used for?
Rheumatoid arthritis, Lupus, Malaria (selected cases)
What are the side effects of Hydroxychloroquine?
Nausea, Stomach upset, Headache
How should I take Hydroxychloroquine?
Take with food as prescribed; yearly eye checks after 5 years of use.
Who should not take Hydroxychloroquine?
Existing retinal disease, Heart rhythm disorders
Medically reviewed by
Medical review pending
Last updated
11 October 2026
Sources
- National List of Essential Medicines (NLEM) 2022, MoHFW
- National Formulary of India, Indian Pharmacopoeia Commission
- CDSCO approved drug information
This information is for general awareness and does not replace advice from a qualified doctor. Do not start, stop or change any medicine without medical advice.