Lithium
Also known as: Priadel, Camcolit, Li-Liquid
What it's for
Lithium stabilises mood in bipolar disorder. It prevents manic and depressive episodes. Regular blood tests are essential as the dose must be carefully controlled.
Comes as: Tablets, modified-release tablets, or liquid
How to take it
- Dose is based on blood test results (lithium level).
- Usually taken once or twice daily.
- Modified-release tablets should be swallowed whole.
- Take at the same time each day.
Doses here are typical. Always follow the instructions from your prescriber or on the packet — they come first.
Common side effects
- Increased thirst and passing urine more often
- Fine tremor in your hands
- Weight gain
- Feeling sick or diarrhoea
The leaflet inside the packet lists all known side effects.
Important safety points
- Blood tests are essential - never miss them
- Drink plenty of fluids (2-3 litres daily)
- Avoid dehydration from heat, exercise, or illness
- NSAIDs (ibuprofen, naproxen) can increase lithium levels dangerously
- Do not change brands without medical advice
Get medical help urgently if…
- You have severe vomiting, diarrhoea, or fever (risk of lithium toxicity)
- You have blurred vision, confusion, or muscle twitching (signs of toxicity)
- You are very drowsy or have slurred speech
- You cannot keep fluids down
Call NHS 111 for urgent advice, or 999 if someone is seriously unwell.
Before you act on anything here
This page is general information, written to help you understand — it is not personal medical advice and it cannot tell you what is right for you. Talk to your own GP, pharmacist or nurse about your own health.
- Need help now but it's not an emergency? Call NHS 111 or use 111.nhs.uk.
- Emergency? Call 999 or go to A&E.