twelve year old miniature schnauzer male got cleared this week to transition off royal canin renal support after eighteen months on it because the latest bloodwork brought his BUN and creatinine back into normal range, our vet is supportive of the transition but is being cautious about which maintenance senior food we move him onto and i want to hear from owners whose dogs have walked this transition successfully because the published material almost universally treats the prescription renal diet as a forever decision and underweights the question of how you actually come back from it

Pickle is a twelve year old neutered miniature schnauzer male, twenty one pounds at a body condition score of five out of nine, on royal canin renal support T for the last eighteen months after a routine senior wellness panel in late 2024 caught a BUN of forty four and a creatinine of two point one with a USG of one point oh one nine, which the primary care vet read as early stage IRIS two chronic kidney disease. We did the standard workup at the time, urine protein creatinine ratio came back in the borderline range, blood pressure was normal, abdominal ultrasound showed mild bilateral renal changes consistent with the bloodwork but no other findings, and we made the decision to start the prescription renal diet plus a low dose ACE inhibitor and recheck in three months. The three month recheck showed the values had stabilized but not improved, the six month recheck showed mild improvement, and the twelve month recheck showed continued improvement that held through the eighteen month recheck this past week.

What the eighteen month recheck actually showed and what the vet is recommending now. The most recent bloodwork came back with a BUN of twenty seven and a creatinine of one point three, both inside the normal range for the lab, and the USG was up to one point oh three two. The urine protein creatinine ratio was clean. Blood pressure normal. The vet read this as the kidney function having recovered meaningfully from where we started, which she said is not the modal outcome for an IRIS two presentation but does happen when the underlying driver was something reversible like subclinical dehydration in a senior small breed plus the dietary load of a higher protein maintenance food. Her recommendation this week was that we could consider transitioning Pickle off the prescription renal diet and back onto a maintenance senior diet, with a recheck at three months on the new food to confirm the values hold. She was clear that she did not want him going back onto a typical adult maintenance food because the protein and phosphorus profile is higher than where she wants him, and she suggested looking at a senior small breed maintenance diet that is moderate on both rather than a full kidney support formulation.

What the published material does not address well. Everything i have read about prescription renal diets in dogs treats the decision to start one as a directional decision that does not get reversed, and the conversations on the various vet nutrition forums i have found are mostly about which renal diet to choose and how to manage palatability in a dog who does not want to eat it. The conversation about transitioning back off a renal diet after the bloodwork improves is genuinely sparse and the few accounts i have found are mostly anecdotal and do not give a clear picture of what the transition actually looks like or what to watch for. Our vet has done this transition with other patients but she is the only practitioner i have direct access to, and she is honest that the published guidance is thinner than she would like for the conversation we are having.

The questions i would like to hear answered. one, for owners whose vets have transitioned a senior small breed off a prescription renal diet after bloodwork improvement, what was the specific maintenance food your vet recommended and why, and how did the bloodwork hold at the three and six month rechecks on the new food. two, the protein and phosphorus profile question, our vet wants us to land in a moderate range rather than a typical adult maintenance level, are there specific brands or formulations that your vets have pointed at that have held up over time, the senior small breed maintenance category has a lot of options and the labels do not always tell you what you need to know. three, the ACE inhibitor question, our vet has not yet given me a recommendation on whether to continue the low dose ACE inhibitor through the diet transition or to taper it as part of the protocol, and i want to know what the right framing for that conversation is at the next appointment. four, the hydration piece, our vet mentioned that subclinical dehydration may have been part of the original driver and that we should be deliberate about maintaining the increased water intake we built into the routine over the last eighteen months even as the diet shifts, are there specific approaches that have worked for senior small breeds beyond just leaving extra water bowls around the house. Pickle is doing well right now and we want to make this transition thoughtfully rather than blow up the gains we made over the last year and a half, happy to share more detail on his current intake and his recheck schedule, looking for the version of this advice from people who have specifically walked through the come back side of the renal diet conversation