Caregivers should watch most closely for nausea, vomiting, diarrhea, poor appetite, weight loss, and serious skin reactions from Exelon Patch, which delivers rivastigmine through the skin. They should also prevent double-patching and report fainting or a slow heartbeat, especially after treatment starts or the dose increases. Exelon Patch is prescribed for mild-to-severe Alzheimer's dementia and mild-to-moderate Parkinson's disease dementia. It does not cure Alzheimer's disease, and some patients receive no benefit, according to the May 2024 prescribing information on DailyMed.
Medical information disclaimer: This article is for general educational purposes only and does not provide medical advice, diagnosis, or treatment. Always consult a physician or other qualified health professional about symptoms, medications, tests, or treatment decisions.
Table of Contents
- Stomach symptoms and weight loss
- Why one patch at a time matters
- Which skin reactions need a call?
- Heart rhythm risks and higher-risk patients
- Restarting after an interruption
Stomach symptoms and weight loss
Nausea, vomiting, diarrhea, reduced appetite, and weight loss are especially important during treatment initiation and after dose increases. These effects are dose-related, and prolonged vomiting or diarrhea can cause serious dehydration. In a 24-week trial, at least 7% of baseline body weight was lost by 8% of patients using the 9.5-mg/24-hour patch, compared with 6% receiving placebo, according to Sandoz's prescribing information on DailyMed.
That difference was modest, but it supports routine monitoring rather than waiting for weight loss to become obvious. A simple caregiver record can track: Contact the prescriber if eating drops noticeably, weight continues to fall, or vomiting or diarrhea persists. Lower food intake and fluid loss can occur together, making an early call more useful than an isolated weight measurement.
- The person's weight at consistent intervals
- How much of each meal they eat
- Episodes of nausea, vomiting, or diarrhea
- Whether symptoms appeared after starting or increasing the dose
Why one patch at a time matters
Yesterday's patch must come off before today's patch goes on. Wearing multiple patches has caused serious reactions, hospitalization, and rarely death, as emphasized in the Exelon Patch medication guide on DailyMed.
Build the removal step into the daily routine: If more than one patch is discovered, treat it as a medication error and seek immediate medical guidance. Do not simply remove the extras and assume the risk has passed.
- Check the skin for the old patch
- Remove it before opening the new pouch
- Apply only one new patch
- Record the date and time
- Confirm removal during caregiver handoffs
Which skin reactions need a call?
Stop the patch and contact the prescriber if redness or irritation spreads beyond the patch's borders. The same instruction applies if the area becomes intensely red, swollen, or blistered. A reaction also needs attention if it does not improve within 48 hours after patch removal.
This pattern can indicate allergic contact dermatitis, an immune reaction to something touching the skin. Inspect the application area when removing each patch. Note the reaction's size, appearance, and timing so the prescriber receives more useful information than "the skin looks irritated.".
Heart rhythm risks and higher-risk patients
Rivastigmine can slow the heart rate. Treatment deserves particular review in someone with sick-sinus syndrome or another electrical conduction disorder, while beta-blockers can add to the risk of slow heart rate and fainting. May 2024 labeling added QTc prolongation and torsades de pointes to postmarketing adverse reactions after an FDA safety-signal review.
QTc is a heart-timing measurement, and torsades de pointes is a serious abnormal rhythm. These voluntary reports cannot show how often the events occur or prove that Exelon Patch caused every reported event. People weighing under 50 kg, or 110 pounds, also need careful titration and toxicity monitoring because lower weight increases rivastigmine exposure. If excessive nausea or vomiting develops, the label says the prescriber should consider reducing maintenance treatment to 4.6 mg/24 hours.
Restarting after an interruption
If treatment has been interrupted for more than three days, contact the prescriber before applying another patch. The label directs restarting at 4.6 mg/24 hours and gradually increasing the dose again, rather than resuming the previous strength.
Keep a note of the last patch's dose, application time, and removal time whenever treatment stops. After a gap longer than three days, leave the patch off until the prescriber provides restart instructions.
