What is the dosing frequency for prostaglandin analogs?

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Multiple Choice

What is the dosing frequency for prostaglandin analogs?

Explanation:
Prostaglandin analogs are effective for a whole day with a single daily dose because they have a long duration of action in the eye. This allows a consistent drop in intraocular pressure over 24 hours without needing to dose more than once. Giving these drops more than once daily doesn’t boost their effect and tends to raise the chance of local side effects like redness or irritation and changes in eyelashes or iris pigment. For these reasons, the standard approach is to dose once daily, typically in the evening (QHS); some clinicians may choose a fixed daily time such as in the morning if that improves adherence, but the key point is that dosing is once daily.

Prostaglandin analogs are effective for a whole day with a single daily dose because they have a long duration of action in the eye. This allows a consistent drop in intraocular pressure over 24 hours without needing to dose more than once. Giving these drops more than once daily doesn’t boost their effect and tends to raise the chance of local side effects like redness or irritation and changes in eyelashes or iris pigment. For these reasons, the standard approach is to dose once daily, typically in the evening (QHS); some clinicians may choose a fixed daily time such as in the morning if that improves adherence, but the key point is that dosing is once daily.

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