• Welcome to the Chronicle Forums.
    Please complete your profile. The forums and the rest of www.chronofhorse.com has single sign-in, so your log in information for one will automatically work for the other. Disclaimer: The opinions expressed here are the views of the individual and do not necessarily reflect the views and opinions of The Chronicle of the Horse.

Announcement

Collapse

Forum rules and no-advertising policy

As a participant on this forum, it is your responsibility to know and follow our rules. Please read this message in its entirety.

Board Rules

1. You’re responsible for what you say.
As outlined in Section 230 of the Communications Decency Act, The Chronicle of the Horse and its affiliates, as well Jelsoft Enterprises Ltd., the developers of vBulletin, are not legally responsible for statements made in the forums.

This is a public forum viewed by a wide spectrum of people, so please be mindful of what you say and who might be reading it—details of personal disputes are likely better handled privately. While posters are legally responsible for their statements, the moderators may in their discretion remove or edit posts that violate these rules. Users have the ability to modify or delete their own messages after posting, but administrators generally will not delete posts, threads or accounts upon request.

Outright inflammatory, vulgar, harassing, malicious or otherwise inappropriate statements and criminal charges unsubstantiated by a reputable news source or legal documentation will not be tolerated and will be dealt with at the discretion of the moderators.

2. Conversations in horse-related forums should be horse-related.
The forums are a wonderful source of information and support for members of the horse community. While it’s understandably tempting to share information or search for input on other topics upon which members might have a similar level of knowledge, members must maintain the focus on horses.

3. Keep conversations productive, on topic and civil.
Discussion and disagreement are inevitable and encouraged; personal insults, diatribes and sniping comments are unproductive and unacceptable. Whether a subject is light-hearted or serious, keep posts focused on the current topic and of general interest to other participants of that thread. Utilize the private message feature or personal email where appropriate to address side topics or personal issues not related to the topic at large.

4. No advertising in the discussion forums.
Posts in the discussion forums directly or indirectly advertising horses, jobs, items or services for sale or wanted will be removed at the discretion of the moderators. Use of the private messaging feature or email addresses obtained through users’ profiles for unsolicited advertising is not permitted.

Company representatives may participate in discussions and answer questions about their products or services, or suggest their products on recent threads if they fulfill the criteria of a query. False "testimonials" provided by company affiliates posing as general consumers are not appropriate, and self-promotion of sales, ad campaigns, etc. through the discussion forums is not allowed.

Paid advertising is available on our classifieds site and through the purchase of banner ads. The tightly monitored Giveaways forum permits free listings of genuinely free horses and items available or wanted (on a limited basis). Items offered for trade are not allowed.

Advertising Policy Specifics
When in doubt of whether something you want to post constitutes advertising, please contact a moderator privately in advance for further clarification. Refer to the following points for general guidelines:

Horses – Only general discussion about the buying, leasing, selling and pricing of horses is permitted. If the post contains, or links to, the type of specific information typically found in a sales or wanted ad, and it’s related to a horse for sale, regardless of who’s selling it, it doesn’t belong in the discussion forums.

Stallions – Board members may ask for suggestions on breeding stallion recommendations. Stallion owners may reply to such queries by suggesting their own stallions, only if their horse fits the specific criteria of the original poster. Excessive promotion of a stallion by its owner or related parties is not permitted and will be addressed at the discretion of the moderators.

Services – Members may use the forums to ask for general recommendations of trainers, barns, shippers, farriers, etc., and other members may answer those requests by suggesting themselves or their company, if their services fulfill the specific criteria of the original post. Members may not solicit other members for business if it is not in response to a direct, genuine query.

Products – While members may ask for general opinions and suggestions on equipment, trailers, trucks, etc., they may not list the specific attributes for which they are in the market, as such posts serve as wanted ads.

Event Announcements – Members may post one notification of an upcoming event that may be of interest to fellow members, if the original poster does not benefit financially from the event. Such threads may not be “bumped” excessively. Premium members may post their own notices in the Event Announcements forum.

Charities/Rescues – Announcements for charitable or fundraising events can only be made for 501(c)(3) tax-exempt organizations. Special exceptions may be made, at the moderators’ discretion and direction, for board-related events or fundraising activities in extraordinary circumstances.

Occasional posts regarding horses available for adoption through IRS-registered horse rescue or placement programs are permitted in the appropriate forums, but these threads may be limited at the discretion of the moderators. Individuals may not advertise or make announcements for horses in need of rescue, placement or adoption unless the horse is available through a recognized rescue or placement agency or government-run entity or the thread fits the criteria for and is located in the Giveaways forum.

5. Do not post copyrighted photographs unless you have purchased that photo and have permission to do so.

6. Respect other members.
As members are often passionate about their beliefs and intentions can easily be misinterpreted in this type of environment, try to explore or resolve the inevitable disagreements that arise in the course of threads calmly and rationally.

If you see a post that you feel violates the rules of the board, please click the “alert” button (exclamation point inside of a triangle) in the bottom left corner of the post, which will alert ONLY the moderators to the post in question. They will then take whatever action, or no action, as deemed appropriate for the situation at their discretion. Do not air grievances regarding other posters or the moderators in the discussion forums.

Please be advised that adding another user to your “Ignore” list via your User Control Panel can be a useful tactic, which blocks posts and private messages by members whose commentary you’d rather avoid reading.

7. We have the right to reproduce statements made in the forums.
The Chronicle of the Horse may copy, quote, link to or otherwise reproduce posts, or portions of posts, in print or online for advertising or editorial purposes, if attributed to their original authors, and by posting in this forum, you hereby grant to The Chronicle of the Horse a perpetual, non-exclusive license under copyright and other rights, to do so.

8. We reserve the right to enforce and amend the rules.
The moderators may delete, edit, move or close any post or thread at any time, or refrain from doing any of the foregoing, in their discretion, and may suspend or revoke a user’s membership privileges at any time to maintain adherence to the rules and the general spirit of the forum. These rules may be amended at any time to address the current needs of the board.

Please see our full Terms of Service and Privacy Policy for more information.

Thanks for being a part of the COTH forums!

(Revised 1/26/16)
See more
See less

How long does it take for Previcox to leave a horse's system?

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • How long does it take for Previcox to leave a horse's system?

    I was thinking of putting my horse on Previcox. How long does it take for the drug to leave a horse's system? The vet tech I talked to said "a long time" but I've also heard a few days.


  • #2
    Good question - I was wondering the same thing. My mare just stopped taking it three days ago and she's still moving fine - so I'm wondering if it's still somewhat in her system or she really is better. I'm going to be seeing my vets this weekend so i plan on talking to them. I'd be interested to hear other people's experiences .
    "When a horse greets you with a nicker & regards you with a large & liquid eye, the question of where you want to be & what you want to do has been answered." CANTER New England

    Comment


    • #3
      The USEF no-two-NSAIDS rule says that you'd have to stop using it 3 days before showing. Based on that, I'd guess less than 3 days.

      Comment


      • #4
        Not necessarily…three days may indicate the amount of time it takes to achieve a level of drug in the horse's system that is permissible for competition purposes which is not always "zero".

        Comment

        • Original Poster

          #5
          Hmmm apparently according to some sites, complete withdrawal is 26 days. That IS a long time. Now, for how long it tests, it didn't say. In Canada I can't show on it at all but fortunately I'm not overly concerned about showing.

          Comment


          • #6
            I'm also in Canada and had to wean my horse off Previcox and try something else legal for showing.

            My vet looked into it, and apparently the racing guidelines are about 2 weeks (but again, that's just to get to an "acceptable level" in the system), and he said to give it a month to be sure (for zero levels for show testing).

            Obviously that makes it totally unsuitable for any horse you plan on showing as the effects aren't going to last for the whole month you have to be off it before the show, plus you'll likely be showing more often than every 2 months!

            I'm now trying him on the Ichon and noticing results already, half way through the loading dose. Completely legal for showing in Canada.
            I've spent most of my life riding horses. The rest I've just wasted.

            Comment


            • #7
              Depends on what you mean by "leave the system". Typically a drug will drop below therapeutic levels within 1 half life, which is how dosing intervals are decided. A half life is a number (expressed in minutes, hours, or days) given after experimentation with lots of subjects when an average number of animals will clear 50% of a drug from their plasma. A drug is usually thought to be below even remotely effective levels or functionally "gone" in five half lives. But if you're talking "no detectable trace of the drug" that would depend on the animal's individual metabolism, the persistence of the drug in fat and body tissues, and the sensitivity of the test being used to detect the drug.
              Click here before you buy.

              Comment


              • #8
                For what it is worth, I take my mare off of Previcox for 3 days each month. Read other COTH'rs comments on use of the product, which were confirmed by my vet. To maintain effectiveness of the drug the horse must be taken off for at least 3days out of 30+ days. It is easier for me to track it monthly. She does show more discomfort on the 3rd day, but she is 34 with arthritis with some remodeling of her knees and hocks.
                "Never do anything that you have to explain twice to the paramedics."
                Courtesy my cousin Tim

                Comment


                • #9
                  Originally posted by fooler View Post
                  For what it is worth, I take my mare off of Previcox for 3 days each month. Read other COTH'rs comments on use of the product, which were confirmed by my vet. To maintain effectiveness of the drug the horse must be taken off for at least 3days out of 30+ days. It is easier for me to track it monthly. She does show more discomfort on the 3rd day, but she is 34 with arthritis with some remodeling of her knees and hocks.
                  I've heard conflicting things about the withdrawal thing; some vets say do it absolutely, some equally good ones in the same area have never heard ot it. I do know one thing--I've got at least 3 Senior horses who would no longer be alive without it, and another whose quality of life took a tremendous positive leap within a day of going on it. Nobody goes off their feed on it, either!

                  Comment


                  • #10
                    What it the rationale for the 3-days-per-month drug holiday? I'm all for minimizing the use of NSAIDs, but wonder why this regimen, exactly?
                    Click here before you buy.

                    Comment


                    • #11
                      Hi Delta, there was a thread last year or possibly earlier where one of the vets who post on the board mentioned taking the horse off of Previcox periodically. Then other posters said their vets said the same. So I checked with my vet, who also agreed. IIRC, the loss of effectiveness is based on the individual.
                      At that time I noticed my mare did not look as comfortable after being on Previcox for 6+ straight months as she was in the first few months. We agreed to put her on a monthly cycle and she has a few "bad" days which are offset by 25+ good days. He has seen her at least twice since then and is content with her current condition. As am I, based on her age and physical challenges.

                      He is due this Friday for spring shots, teeth and to be "my 2nd set of eyes" on the horses. Will ask him again and let you know his comments.
                      "Never do anything that you have to explain twice to the paramedics."
                      Courtesy my cousin Tim

                      Comment


                      • #12
                        Delta- per the vet, horses can/will build up resistance to the drug. So periodic breaks help to maintain the drug's effectiveness. Similar to how my system reacts to Benadryl, after a week or so it has as much effect as candy.
                        "Never do anything that you have to explain twice to the paramedics."
                        Courtesy my cousin Tim

                        Comment


                        • #13
                          What are the long-term effects of the drug? My husband's neuro horse has been on it for 8 months or so (with no withdrawal days) and seems to be doing fine, but I wonder if there are any negative effects of being on it for so long?
                          "A horse's face always conveys clearly whether it is loved by its owner or simply used." - Anja Beran

                          Comment


                          • #14
                            Originally posted by Pocket Pony View Post
                            What are the long-term effects of the drug? My husband's neuro horse has been on it for 8 months or so (with no withdrawal days) and seems to be doing fine, but I wonder if there are any negative effects of being on it for so long?
                            Best to speak with your vet, especially with a horse with neuro problems.
                            "Never do anything that you have to explain twice to the paramedics."
                            Courtesy my cousin Tim

                            Comment


                            • #15
                              Originally posted by fooler View Post
                              Best to speak with your vet, especially with a horse with neuro problems.
                              Horse is under vet's care and the vet was the one who prescribed Previcox. I was just wondering if anyone had any anectodes to share vs. what the vets say.
                              "A horse's face always conveys clearly whether it is loved by its owner or simply used." - Anja Beran

                              Comment


                              • #16
                                Firocoxib is a permitted drug according to the usef website, within certain parameters.

                                Comment


                                • #17
                                  Firocoxib is a permitted drug according to the usef website, within certain parameters.

                                  Comment


                                  • #18
                                    Originally posted by Pocket Pony View Post
                                    What are the long-term effects of the drug? My husband's neuro horse has been on it for 8 months or so (with no withdrawal days) and seems to be doing fine, but I wonder if there are any negative effects of being on it for so long?
                                    I'd say that's a big-assed unknown. Not only are you using the dog version of the drug (which SHOULD behave the same as the horse version, but.....) but you're also dealing with a totally off-label dosing schedule. COX-2 inhibitors are also (fairly, in the grand scheme of things) new to the market, so you can *try* to extrapolate the human data, but horses are so very different, it's really pretty irrelevant.

                                    So, I suppose, with a neuro horse you do what you do to keep him happy without any real worry about potential side effects, because really? What else can you do? Do what you can until it doesn't work anymore and then put him down or readdress the issues in another way.

                                    Comment

                                    Working...
                                    X