Prascend and side effects? Help! (Also in NL)

Fruitcake

Well-Known Member
Joined
15 February 2012
Messages
2,432
Visit site
Anyone had any experience of side effects of Prascend?

My Sec A was diagnosed with Cushings a couple of weeks ago and was started on Prascend. Vet said to start with 1/2 tablet for 4 days then go onto 1 tablet. (Literature in Prascend box says to begin at 1/2 tablet for 4-6 WEEKS, retest, then increase as necessary but went with what vet said). At the weekend (after being on full tablet for 5 days or so), I noticed trembling on his shoulders and quarters. Yesterday morning, when he was in the stable (he has the door open and free access from his little paddock), he seemed a little unco-ordinated with his feet. Nothing like when he's had laminitis in the past, but I obviously checked his feet (cool) and for digital pulse (couldn't feel one). He was standing completely square and not shifting weight at all. He then walked outside totally normally and actually trotted up the fence line (so not lame). I remembered seeing something in the Prascend leaflet about mild symptoms of central nervous system as a side effect so re-read it and it does, indeed, say that mild ataxia can be an effect. Called vet who said it sounded like laminitis and to continue as I was with 1 tablet as he hadn't seen this side effect before. I never usually question vets, but I'm almost sure this isn't laminitis and it does seem a bit of a coincidence that this began very shortly after increasing the Prascend dose and is listed as a side effect. Vet then said if I really wanted, I could stop Prascend for 2-3 days and then restart at 1/2 tablet again- as that's what Prascend lit suggests. Am giving that a try.

No change last night (but imagine it'd be too soon anyway as he had last tablet on Sun pm) or really this morning although doesn't seem to be trembling as much. I've noticed that his movement seems completely normal outside- will happily trot up to me- but a bit stilted inside. Have done lots of googling- the worst thing for someone like me who worries uncontrollably anyway! Did find, however, that 'sensory ataxia' in humans is worse in dimly lit areas so suppose this would fit with him being affected in stable but not outside.

He's completely his usual self otherwise. Same appetite, pleased to see me. No other symptoms. He has a very small paddock with no grass to speak of other than the odd green shoot coming through and has been managed like this for the last few years with no laminitis episodes. The 3rd day of no tablets will be tomorrow night so I'm hoping to see an improvement by tomorrow. Just wanted to know if anyone else has experienced anything similar with Prascend. He's only 275kg and the 1 full tablet does is what's recommended for a 400kg-600kg horse so to me, it does seem like a large dose to put him onto after only 4 days on the lower dose.

Sorry for the long, rambling post. I'm a bit worried!
 
I was told to start on 1/2 daily then increase if required, mine was slightly different as not laminitic and we were treating other symptoms, excessive drinking and rapid weight loss, I was told that the side effects could be as you describe as if their system is in shock to some degree.
The vet also said if giving 1 tablet it needs to be 1/2 at a time in two feeds evenly spaced out.
It is likely that your pony only needs 1/2 and this may be all he ever requires to maintain him, mine dropped from 1 down to 1/2 every other day, he was on 2 for a while when at his worst.
I would go with your gut feeling, start back on 1/2 and if his symptoms are under control get him tested as advised, he may be fine on this.
 
I think I would revert back to the lower dose for a few days and see if your pony stops showing these symptoms and then review the situation from there. Perhaps only increase by 1/4 of a tablet (0.25mg) at a time.

When Motor was diagnosed, which was 7 years ago, the ACTH test was not available and only the suppression test was, which was a no go, as Motor was already suffering from Laminitis and the risk was too great.

Motor never experienced this sort of issue you, however I do feel for you, as our Ponies are such a worry :(

Please keep up updated.

ETS .... You must discuss this with your Vet though.
 
Thanks so much for your replies. He seemed a little better tonight. Still trembling slightly but a lot sounder moving around in the stable (although still not completely sure footed). Again, he was totally fine when he went outside and moved completely normally there.

Tomorrow will be the third day of break from the Prascend so I've got my fingers crossed for an improvement. If so, I'll start him back on the 1/2 tablet and go from there. I wonder whether to leave him off the tablets until he's completely back to normal to make sure any build up is out of his system or just to look for a marked imporvement and restart then (?) Will give the vet a ring to see what they think. (They're probably totally sick of me and my worries by now!)

I'm going to speak to the vet about leaving him on this lower dose until he's retested and make a decision about the future dose based on this. His ACTH was only 54 at his first test so, as far as I know, this wasn't as high as some are to begin with.

Thanks for your support. I really worry so much about my horses!!
 
Thanks so much for your replies. He seemed a little better tonight. Still trembling slightly but a lot sounder moving around in the stable (although still not completely sure footed). Again, he was totally fine when he went outside and moved completely normally there.

Tomorrow will be the third day of break from the Prascend so I've got my fingers crossed for an improvement. If so, I'll start him back on the 1/2 tablet and go from there. I wonder whether to leave him off the tablets until he's completely back to normal to make sure any build up is out of his system or just to look for a marked imporvement and restart then (?) Will give the vet a ring to see what they think. (They're probably totally sick of me and my worries by now!)

I'm going to speak to the vet about leaving him on this lower dose until he's retested and make a decision about the future dose based on this. His ACTH was only 54 at his first test so, as far as I know, this wasn't as high as some are to begin with.

Thanks for your support. I really worry so much about my horses!!

I am glad he is feeling better and I know where you are coming from about keep calling the Vet, however they are there to help, but I am the same as you and that is one of the reasons, we put a thread on here :confused:;)

I think a gradual increase of the Prascend will be the better option here and then retest his ACTH at the required time and go from there.

Good luck :)

ETS you have to be on a stable dosage for about a month, before a retest, I think?
 
Last edited:
Thanks!

This morning he seemed much more sure footed. (He was pacing around inside, watching while I was preparing the breakfasts- American barn style stables so he can see over wall to feed area. He hadn't been doing that so think this is a good sign that he's feeling steadier on his feet inside). Still trembling a little but I've since heard that that can sometimes be an effect of Cushings itself so I suppose it's hard to distinguish. I'm going to start him back off on the half tablet agian and leave him on that until he's retested.

Thanks for the advice about the stable dose for a month before retesting. I didn't know that.

I'm so glad I found this forum! People are so helpful! Thanks. :)
 
Thanks for the advice about the stable dose for a month before retesting. I didn't know that.


Just double check with your Vet first on this, as it may be a little longer than a month .... anyway I am sure my Vet said this to me, but I waited a little longer, for various other reason though.

Hope he continues to improve and keep us updated :)
 
Thanks again! I'll check with the vet about the timing for the retest. I was just going to get him retested at the end of the month when his vaccinations are due but it won't hurt to do it separately.

He's been back to normal today. I spoke to the vet yesterday about restarting the Prascend and while he's not convinced that the ataxia was due to Prascend, he agrees that restarting him at the half tablet dose and leaving him on that until retesting is the way forward just to be sure.

Even though the vet isn't convinced it was a reaction / dose intolerance, I'm totally convinced it was. Too much of a coincidence that it started a few days after increasing the dose and completely sorted itself out after a couple of days off medication.

I restarted the Prascend tonight. (Half tablet). I'm going to be obsessively watching his every movement over the next couple of days now!! Fingers crossed! :0
 
Top