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Medication synchronization aligns refill dates, reducing gaps in therapy. Coupled with pharmacist counseling and motivational interviewing, this has the strongest evidence for improving adherence and outcomes. Pillboxes and calendars (A, D) help but are less effective without ongoing support. Restrictive refill policies (C) may discourage adherence. Pharmacists play a critical role in sustained statin therapy, improving cardiovascular outcomes.

Nitroprusside decomposes when exposed to light, producing cyanide, which is toxic. It must be protected with opaque wrapping during infusion. Ceftriaxone, meropenem, and piperacillin-tazobactam do not require light protection.

Ceftriaxone can form insoluble precipitates with calcium, especially in neonates, leading to fatal emboli. It should not be mixed with calcium-containing solutions like LR. Cefepime, meropenem, and vancomycin do not have this specific incompatibility.

Doxorubicin, an anthracycline vesicant, must be infused via central line whenever possible. Extravasation causes severe tissue necrosis. TPN also requires central line due to osmolarity but is not a vesicant. Vancomycin and ceftriaxone are irritants but not true vesicants.

Nitroprusside decomposes in light, forming cyanide, which is toxic. It must be infused in a light-protected system. Ceftriaxone, piperacillin-tazobactam, and meropenem do not require light protection.