Still having a hard time getting to sleep… the mosquitoes make it worse… the only repellent I've found contains citronella, not DEET, not sure whether it's that effective… Smells nicer at least…
The dehydration may also make it harder to get to sleep
The pharmacies here don't carry the usual assortment that e.g. American pharmas have… Here it's herbal products, a few staples like ibuprofen, etc. So far they've said they typical Cuban "no" to both of my questions: if they had anything to get to sleep, or if they had anything for the sinuses.
Cuban society is basically functional, but anything more advanced seems spotty…