Anti-histamines

It depends on which medication you took. Some antihistamines can make you very sleepy, others, not so much. As a child, they sent my youngest sky high! I’d have to try and scrape her off the ceiling to get her to bed.

This is common, especially in people age 65+. As we age, our bodies becomes less efficient at metabolizing medications, so they can have greater effects. In addition, the blood brain barrier also becomes less effective, so any medication that affects the brain can become more potent.

I didn’t realise how different many antihistamines were. I just used to look at what it said on the packet ie non drowsy or drowsy. But then I googled it and it isn’t as strait forward as that. Some are fast acting. Some slow. Some affect you for a short while, others for a long time. Non drowsy aren’t necessarily non drowsy either. I made a list of them but even that confuses me. It’s the same with cold and flu medication. Some of them will keep you awake all night and some send you to sleep.

This tells me to read the packet!
Like MayBee I thought it came down to «drowsy» ( eg Piriton and great for a good night’s sleep ) and the rest!
That‘ll larn me as Badger said

I always take the drowsy antihistamines at bedtime when in a different time zone, they really help to sort out jet lag.

A medic acquaintance^ recommended life hack