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Ask Nurse Lynn: Determining Appropriate Setraline Dose

Question:

Male, 19 years old, Deletion subtype

My son is on Sertraline (Zoloft) and has been on quite a low dose, so under 25 mg for quite a while, in November we put his dose up by 2ml every week so now he is on 50 mg, one pill in the morning and one at night. The sertraline is to reduce anxiety, perseveration, and to help with difficulty sleeping when he gets stuck. Often over the years, when we put the dose up, we wondered if it was adding to his anxiety and ramped up behaviours, so we were very slow to increase. So now, having upped the dose quite quickly, he settled for a week or two, and now is ramped up again. It is December, school schedule is all over the map with special activities, etc, but I wonder if we should go UP or DOWN. He is hyper, prior to dose increase he seemed depressed. Thanks

Nurse Lynn’s Response:

It sounds like you’re navigating a challenging balance with your son’s medication and external factors like the school schedule contributing to changes in behavior along with the whirlwind of the holiday season.

The “ramped up” behavior following a dose increase could potentially be a sign of activation or overstimulation from the higher dose of Sertraline. This is not uncommon in some individuals with Prader-Willi Syndrome and may signal that the dose is too high for his current needs. Mood activation can manifest as: increased agitation or restlessness, behavioral outbursts, sleep disturbances or, emotional dysregulation including sudden mood swings. Alternatively, if the lower dose previously seemed insufficient, it could indicate the need for fine-tuning rather than a straightforward increase or decrease.

The disruption to the school routine in December along with everything that goes along with the holiday season might be exacerbating anxiety or hyperactivity. This could temporarily amplify behaviors, making it harder to discern medication effects.

Share your observations about his behavior at different doses and environmental triggers. A slight adjustment (up or down) or returning to the previous dose could be discussed based on his recent history. Keep a daily log of his behaviors, mood, sleep, and activities. This can provide valuable insight for his doctor to assess whether the dose increase is beneficial or too stimulating. Focus on calming routines, sensory strategies, or other behavioral tools to help him manage the disruptions in routine during this time.

There is GeneSight testing that you may also want to suggest to your provider. This test analyzes a person’s genetic makeup to determine how their genes may affect how they respond to certain medications. The test results can help identify which medications are likely to be effective and well-tolerated for a particular patient. This is a test done at the office and is a simple cheek swab.

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