but we were hesitant to give her it on a daily basis because we weren’t sure of the long-term effects.
a lot of dogs take rimadyl or metacam daily for years- many humans take metacam daily for years and years. It can cause GI upset, and generally they suggest drawing blood twice a year to see if the liver or kidney are reacting badly to the drugs.
tramadol HAS been studied for treating arthritis pain in both people and dogs, I wouldn’t hesitate to try it:
BMC Vet Res. 2012 Oct 4;8:185. doi: 10.1186/1746-6148-8-185.
Effect of analgesic therapy on clinical outcome measures in a randomized controlled trial using client-owned dogs with hip osteoarthritis.
Malek S, Sample SJ, Schwartz Z, Nemke B, Jacobson PB, Cozzi EM, Schaefer SL, Bleedorn JA, Holzman G, Muir P.
Source
Comparative Orthopaedic Research Laboratory, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, USA.
Abstract
BACKGROUND:
Pain and impaired mobility because of osteoarthritis (OA) is common in dogs and humans. Efficacy studies of analgesic drug treatment of dogs with naturally occurring OA may be challenging, as a caregiver placebo effect is typically evident. However, little is known about effect sizes of common outcome-measures in canine clinical trials evaluating treatment of OA pain. Forty-nine client-owned dogs with hip OA were enrolled in a randomized, double-blinded placebo-controlled prospective trial. After a 1 week baseline period, dogs were randomly assigned to a treatment (ABT-116 - transient receptor potential vanilloid 1 (TRPV1) antagonist, Carprofen - non-steroidal anti-inflammatory drug (NSAID), Tramadol - synthetic opiate, or Placebo) for 2 weeks. Outcome-measures included physical examination parameters, owner questionnaire, activity monitoring, gait analysis, and use of rescue medication.
RESULTS:
Acute hyperthermia developed after ABT-116 treatment (P < 0.001). Treatment with carprofen (P ≤ 0.01) and tramadol (P ≤ 0.001) led to improved mobility assessed by owner questionnaire. Nighttime activity was increased after ABT-116 treatment (P = 0.01). Kinetic gait analysis did not reveal significant treatment effects. Use of rescue treatment decreased with treatment in the ABT-116 and Carprofen groups (P < 0.001). Questionnaire score and activity count at the end of treatment were correlated with age, clinical severity at trial entry, and outcome measure baseline status (SR ≥ ±0.40, P ≤ 0.005). Placebo treatment effects were evident with all variables studied.
CONCLUSION:
Treatment of hip OA in client-owned dogs is associated with a placebo effect for all variables that are commonly used for efficacy studies of analgesic drugs. This likely reflects caregiver bias or the phenomenon of regression to the mean. In the present study, outcome measures with significant effects also varied between groups, highlighting the value of using multiple outcome measures, as well as an a priori analysis of effect size associated with each measure. Effect size data from the present study could be used to inform design of future trials studying analgesic treatment of canine OA. Our results suggest that analgesic treatment with ABT-116 is not as effective as carprofen or tramadol for treatment of hip arthritis pain in client-owned dogs.
Clin Ther. 2004 Nov;26(11):1774-82.
Efficacy and tolerability of sustained-release tramadol in the treatment of symptomatic osteoarthritis of the hip or knee: a multicenter, randomized, double-blind, placebo-controlled study.
Malonne H, Coffiner M, Sonet B, Sereno A, Vanderbist F.
Source
Laboratoire de Physiologie et de Phannacologie, CP206-3, Institut de Pharmacie, Université Libre de Bruxelles,1050 Bruxelles, Belgium. hugues.malonne@ulb.ac.be
Abstract
BACKGROUND:
Opioid analgesics may be a useful alternative in patients with osteoarthritis who have not responded to first-line treatment with acetaminophen and in whom nonsteroidal anti-inflammatory drugs are contraindicated, ineffective, or poorly tolerated.
OBJECTIVE:
This study compared the efficacy and tolerability of tramadol LP 200 mg, a new once-daily,sustained-release formulation, with those of placebo in patients with osteoarthritis of the hip or knee.
METHODS:
In this multicenter, double-blind, placebo-controlled, parallel-group study, patients with osteoarthritis of the hip or knee (European League Against Rheumatism criteria) were randomized to receive either tramadol LP 200 mg once daily or placebo for 14 days. The primary efficacy end point was the change from baseline to the end of the study in scores on the Huskisson visual analog scale for pain. Secondary end points were change in the Lequesne functional discomfort index, global efficacy assessed by the patient and the investigator, time to improvement, and use of acetaminophen as rescue analgesic medication. Global tolerability was assessed by both patients and investigators at the end of the study The number and severity of adverse events occurring during the study and for 2 weeks thereafter were also recorded.
RESULTS:
Two hundred thirty patients (167 women, 63 men) were evaluable for efficacy and safety Demographic data for the tramadol and placebo groups were as follows: mean (SD) age, 67.1 (7.1) and 66.4 (92) years, respectively; female sex, 72.1% and 73.1%; and mean body weight, 74.7 (13.6) and 74.6 (14.8) kg. All patients were white. The completer analysis included 197 patients (85 tramadol, 112 placebo). Pain was significantly reduced in the tramadol LP group compared with the placebo group on day 7 (P = 0.002) and day 14 (P = 0.010). In the patient’s assessment of global efficacy, 77.6% (66) of the tramadol LP group reported improvement by day 14, compared with 59.8% (67) of the placebo group; in the investigator’s assessment, the efficacy of tramadol LP was rated very good or good for 612% (52) of patients, compared with 30.4% (34) for placebo. Improvement was reported before day 7 in 882% (75) of patients in the tramadol LP group, compared with 65.2% (73) in the placebo group (P = 0.021); the mean time from the initiation of treatment to reported improvement was 3 days for tramadol LP and 6 days for placebo (P < 0.001). Rates of response (defined as > or =30% pain reduction between days 0 and 14) were 64.7% (55) for tramadol LP and 50.0% (56) for placebo (P = 0.039); no rescue medication was used by 60.0% (51) of the tramadol LP group and 36.6% (41) of the placebo group (P - 0.001). One or more adverse event was reported by 45.0% (50) of the tramadol LP group, compared with 193% (23) of the placebo group (P < 0.001). As would be expected with an opiate agonist such as tramadol, the most common adverse events with this agent involved the gastrointestinal system (nausea, 22.5% [25] of patients; vomiting, 17.1% [19]) and the central nervous system (somnolence, 11.7% [13]).
CONCLUSIONS:
In this study, tramadol LP 200 mg was significantly more effective than placebo in alleviating pain in patients with osteoarthritis of the hip or knee. It appeared to be relatively well tolerated for an opioid compound.
PMID: 15639689 [PubMed - indexed for MEDLINE]