We’ve had an email from Andi:

Can I Compost vitamin tablets? I have two jars in date but have gone moist from the air. What can I do with the bottles?

We’ve covered pill bottles already on the site but the vitamin question is a good one – and I’m not sure of the answer. I suspect it might be “best not”. We’re instructed to always dispose of expired medicines very carefully to avoid risk to the public/wild animals, and to avoid contamination of the environment/water supply. While dietary supplements are generally a lot more benign, there is still some risk, for example, iron can be surprisingly toxic to children, and presumably small animals. I’m not suggesting that many children will hunt around in your compost bin for a feast of pills but the payoff doesn’t really seem worth the risk. I may be wrong though.

I’m also not sure if there will be many reuses for them…

Any suggestions for stopping them going soggy in the first place?