1. Community
  2. Mental health
  3. Mental Health

Half-life of pills

Posted , 2 users are following.

hedda99
hedda99

I just thought this might be useful as I've noticed that some people get confused about what a half-life means in terms of concentration levels in your body.

Example: If an anti-depressant has a half-life of 10 hours, then it will go like this:

40mg tablet taken in morning

10 hours later a concentration of 20mg left in body

10 hours after that - 10mg

10 hours after that - 5mg

10 hours after that - 2.5mg

and so on till it has left the body completely.

So one 40mg tablet with a half-life of 10 hours would take a few days to completely leave your system.

I hope that helps.

2 likes, 1 reply

1 Reply

Back to top

Report or request deletion

Thanks for your help!

We want the community to be a useful resource for our users but it is important to remember that the community are not moderated or reviewed by doctors and so you should not rely on opinions or advice given by other users in respect of any healthcare matters. Always speak to your doctor before acting and in cases of emergency seek appropriate medical assistance immediately. Use of the community is subject to our Terms of Use and Privacy Policy and steps will be taken to remove posts identified as being in breach of those terms.