Possible Magnesium Oxide Overdose...

[itsonlyme]

I've been away for 3 days & left my sister in charge of the horses. Went to do them tonight& Dolly (12.2 section A) is acting as though she's been sedated. Sis says she got confused with the supplements on Friday & gave her a heaped 50ml scoop of heavy mag ox. She says she was fine on sat & Sunday.

Is it possible that the mag ox can have this effect? She's been on it for ages, but at the correct dose obviously. I just can't think of anything else it could be. She's totally out of it. Just been back to check her again. No other symptoms - just very lethargic. Any ideas? :-(

 

[rhino]

From (albeit fairly old) studies, overdosing of magnesium oxide has been shown to have no adverse effects in horses.

(Hintz and Schyrver 1973 article but can't find it online)

 

[cptrayes]

In theory she should just have wee'd it away. My guess would be that she has a virus which is coincidental and will be over it in a day or three

 

[Oberon]

Horses can excrete excess magnesium (unlike iron) and she'll pee it out.

I've been advised to double their dose in response to certain issues in the past so I wouldn't worry.
If lack of magnesium causes agitation - perhaps O/D makes them stoned?

 

[itsonlyme]

Thanks everyone. Im hoping you're right Oberon. Although I've just been googling & I've now got it into my head that she's starting with Atypical Myopathy. Mum says Im over-reacting & seeing things that aren't there. Gonna finish my tea & go back again. :-(