Pet Medication & Side Effect Tracker

Setting up your first log

Start by entering your pet's name and species. Add every medication your vet prescribed, including the dose, how often you give it, and the start date. If you are not sure about the exact dose, write what is on the label. You can always edit it later.

The three quick-start buttons fill in example data so you can see how the timeline looks. Replace the example entries with your pet's real information.

Logging symptoms day by day

Each day, check in with your pet. Note anything out of the ordinary. Did they eat less? Sleep more? Have loose stools? Vomit? Itch? Write it down with the date and rate how bad it seemed.

Pick the medication you think might be related. If you are not sure, that is fine. The symptom will still appear on the timeline. Include small details like whether it happened right after a dose or on an empty stomach.

Common mistakes to avoid

• Waiting too long to write things down. Memory fades fast. Log symptoms the same day, even if they seem minor.
• Skipping the food and water field. Changes in appetite or thirst are often the first sign of a problem. Track them even when your pet seems fine.
• Forgetting supplements and treats. Some side effects come from over-the-counter chews, joint supplements, or new foods, not just prescriptions. Add them to the medication list.
• Not noting missed doses. If you forget a dose or give it late, log that too. Gaps in the schedule can cause symptoms on their own.

Preparing for a vet visit

Before your appointment, click "Print Summary" to generate a clean timeline. It lists every medication with start dates, followed by symptoms in order with severity ratings. Bring the printout or open it on your phone.

Vets can spot patterns faster with a written log. They might see that a symptom started two days after a new medication, or that it only happens on days when a dose was missed. That kind of detail helps them adjust treatment.

Scenario: First-time prescription

Your dog was just started on a new anti-inflammatory for joint pain. The vet said to watch for stomach upset. Click "New Prescription" to load sample data, then replace it with your dog's details. Log any vomiting, diarrhea, or changes in energy for the first two weeks. Bring the log to the follow-up visit.

Data stays on your device

Everything you enter is saved in your browser. No account needed, no data sent anywhere. If you clear your browser storage, the logs will be removed. For long-term tracking, export your log regularly and save the file on your computer.

If you switch devices or browsers, your logs will not transfer. Consider printing or exporting before making changes to your browser settings.