Medication for Dog Dementia: Selegiline (Anipryl) and What Else Helps
There is one medication FDA-approved for the control of clinical signs associated with dog dementia: selegiline, sold under the brand name Anipryl. It does not work for every dog, but for many it improves alertness and eases the signs of canine cognitive dysfunction. Your vet may also prescribe other medications, not to treat the dementia itself, but to manage the night-time anxiety and broken sleep that make the disease so hard to live with.
Quick answer
The main prescription medication for canine cognitive dysfunction is selegiline, sold under the brand name Anipryl. It is FDA-approved for the control of clinical signs associated with canine cognitive dysfunction, but it is not right for every dog and it can interact with other medications. Your vet should review your dog’s health, behavior signs, and full medication list before prescribing it.
Here is what each one does, what to realistically expect, and the safety points that matter.
| Option | What it is for | What to expect |
|---|---|---|
| Selegiline (Anipryl) | The only drug FDA-approved for the control of clinical signs associated with canine cognitive dysfunction | Once-daily tablet; allow a few weeks to a couple of months to judge it; helps a meaningful share of dogs, not all; vet-monitored for drug interactions |
| Melatonin | Night-time settling and sleep | Commonly used for settling as sleep signaling changes with age; use a vet dose and a xylitol-free product |
| Trazodone | Night-time anxiety and restlessness | Prescription, used under veterinary direction |
| Gabapentin | Night-time anxiety, restlessness, and pain | Prescription; can also ease the arthritis pain that keeps many senior dogs up |
| Supplements (e.g. SAMe, phosphatidylserine) | Not drugs; used to support cognitive function alongside the plan | Tell your vet what your dog takes; some can interact with medications |
Selegiline (Anipryl): the approved option
Selegiline is the only drug FDA-approved for the control of clinical signs associated with canine cognitive dysfunction. It is given once a day as a tablet.
How it works
Selegiline is an MAO-B inhibitor. In plain terms, it helps the aging brain hold on to more dopamine, a signaling chemical involved in alertness and learning, and it may also reduce some of the oxidative damage behind the disease. The goal is to bring back some of the engagement and clarity that dementia takes away.
What to expect
Give it time. Selegiline usually takes a few weeks, often a month or two, before you can judge whether it is helping. When it works, owners describe a dog who seems more “there,” more interested, less lost. When it does not, your vet will reassess. It is honest to say that it helps a meaningful share of dogs, not all of them, and there is no way to know in advance which group your dog is in without trying.
Side effects and safety
Selegiline is generally well tolerated. When side effects happen they are usually mild, things like stomach upset, vomiting, restlessness, or occasional disorientation. The bigger safety point is drug interactions: selegiline should not be combined with certain other medications, including some antidepressants and pain drugs like tramadol, because the combination can be dangerous. This is exactly why it is prescribed and monitored by your vet, who will know your dog’s full medication list. Do not start, stop, or combine it on your own.
Before starting selegiline, tell your vet about
Selegiline interacts with several common products, so give your vet your dog’s full list first, including:
- Any antidepressant or behavior medication, including fluoxetine, clomipramine, amitriptyline, or other SSRIs and tricyclics
- Tramadol or other pain medications
- Amitraz flea and tick products or collars
- Ephedrine or other stimulant-type medications
- All supplements, CBD, calming products, and over-the-counter products
This is not a do-it-yourself checklist. It is what your vet weighs before prescribing, which is exactly why selegiline is a prescription drug.
Selegiline dosing by weight (what the label says)
The labeled dose is 0.5 to 1.0 mg per kilogram of body weight, once a day, preferably in the morning. Tablets come in 5, 10, 15, and 30 mg, and the label directs vets to start at the nearest whole tablet. This chart shows what that math looks like; your veterinarian picks the exact tablet and adjusts from there. Never split doses or change the amount on your own.
| Dog’s weight | Labeled daily range (0.5-1.0 mg/kg) | Tablet sizes your vet may use |
|---|---|---|
| 10 lb (4.5 kg) | 2.3-4.5 mg | 5 mg (the smallest tablet; your vet decides the fit) |
| 20 lb (9 kg) | 4.5-9 mg | 5 or 10 mg |
| 30 lb (13.6 kg) | 7-13.6 mg | 10 or 15 mg |
| 40 lb (18 kg) | 9-18 mg | 10 or 15 mg |
| 50 lb (22.7 kg) | 11-22.7 mg | 15 mg |
| 60 lb (27 kg) | 13.6-27 mg | 15 or 30 mg |
| 80 lb (36 kg) | 18-36 mg | 30 mg |
| 100 lb (45 kg) | 22.7-45 mg | 30 mg |
Give it in the morning, because selegiline can be mildly stimulating and a morning dose is what the label studied. Allow several weeks to judge the effect; many vets reassess at about one month.
What it costs, honestly
Brand-name Anipryl typically runs in the range of $100 to $145 a month depending on tablet size and pharmacy. Many veterinarians prescribe generic selegiline instead, which often brings the cost down substantially. Prices move around, so ask your vet clinic and check a pharmacy price tool before filling; a month of therapy is the honest unit to budget for, because you will not know whether it helps until several weeks in.
Anipryl vs generic selegiline
Anipryl is the veterinary brand of selegiline, and it is the version specifically FDA-approved for dogs. Generic selegiline contains the same active ingredient and is commonly prescribed by veterinarians for cost reasons; using the human generic in a dog is an extra-label decision that belongs to your vet. Practically, the medicine is the same molecule: what changes is the label, the tablet sizes available, and the price. If cost is the barrier, ask your vet directly about the generic; it is a normal, common conversation.
Medications for the night and for anxiety
A lot of what makes dementia hard is the night-time restlessness and anxiety, and your vet has tools aimed right at that:
- Melatonin is commonly used to help senior dogs settle at night, as sleep and melatonin signaling change with age. Use a vet-recommended dose and a xylitol-free product.
- Trazodone and gabapentin are prescription options for night-time anxiety and sleep, used under veterinary direction.
These ease the symptoms, not the underlying dementia, but quieter, safer nights can change life for both of you. We go deeper on night care here: calming a dog with dementia at night.
A hard rule: never give your dog human sleep or anxiety medication without your vet. Several common human drugs are toxic to dogs.
Is there a cure?
No. No medication cures canine cognitive dysfunction, and any product that claims to is not being honest with you. What medication can do, especially alongside diet, enrichment, and supplements, is ease the signs and improve your dog’s comfort and quality of life. The earlier you start, the more function there is to protect.
Where supplements fit
Supplements are not drugs, and they are not a substitute for the plan above. But some, with ingredients like SAMe and phosphatidylserine, are used to support cognitive function as part of a broader approach. We cover the evidence, and where our own CogniCaps fits, on the supplements for dog dementia page. Always tell your vet what supplements your dog is taking, since some can interact with medications.
When to call your vet
Selegiline and the night-time medications on this page are prescription drugs for good reasons: your vet needs to review your dog’s health, behavior signs, and full medication list before prescribing, and to reassess when something is not working. Never start, stop, or combine medications, including supplements, without that conversation.
References and further reading
- Anipryl (selegiline hydrochloride) prescribing information, DailyMed (U.S. National Library of Medicine). Approved for the control of clinical signs associated with canine cognitive dysfunction under NADA 141-080, including the drug-interaction cautions.
- 2023 AAHA Senior Care Guidelines for Dogs and Cats: Managing Cognitive Dysfunction and Behavioral Anxiety. American Animal Hospital Association. (The veterinary basis for selegiline plus the night-time options: melatonin, trazodone, and gabapentin.)
- Cornell University Riney Canine Health Center. Cognitive dysfunction in senior dogs.
Frequently asked questions
What is selegiline (Anipryl) for dogs?
Selegiline, sold as Anipryl, is the only medication FDA-approved for the control of clinical signs associated with canine cognitive dysfunction (dog dementia). It is a once-daily tablet that helps the aging brain retain more dopamine and may reduce oxidative damage, with the goal of improving alertness and easing dementia signs.
How well does selegiline work for dog dementia?
It helps a meaningful share of dogs, but not all. When it works, owners often see a dog who is more alert, engaged, and “himself.” It usually takes a few weeks to a couple of months to judge the effect. If it is not helping, your vet will reassess the plan.
What are the side effects of selegiline in dogs?
Selegiline is generally well tolerated. Side effects, when they occur, are usually mild, such as stomach upset, vomiting, restlessness, or occasional disorientation. The important safety issue is drug interactions with certain antidepressants and pain medications, which is why it must be prescribed and monitored by your vet.
Is there a cure or medication for dog dementia?
There is no cure. There is one approved medication, selegiline (Anipryl), plus other medications your vet can use for night-time anxiety and sleep. Combined with diet, enrichment, and supplements, these can ease the signs and improve quality of life, but they manage the disease rather than cure it.
Can I give my dog melatonin for dementia?
Melatonin is commonly used to help senior dogs with dementia settle at night, as sleep and melatonin signaling change with age. It can help, but get the correct dose and a xylitol-free product from your vet first, and use it as part of a fuller night-care plan rather than on its own.
How long does selegiline take to work in dogs?
Allow a few weeks to a couple of months before judging it. Some owners notice change within the first month; for others improvement builds more slowly, which is why vets typically reassess after about four to eight weeks rather than days. If nothing has changed by the two-month mark, that is the conversation to have with your vet about adjusting the plan.
This guide is educational and is not a substitute for veterinary diagnosis or care. If you are worried about your dog, talk to your veterinarian.