It is always a pleasure that you participate in the forum.
Reactive strips can be bought directly in pharmacies (€ 45 or so the 50 -strips box) or pharmaceutical laboratories (ABBOTT, Lifescan, Roche, Menarini, Bayer), is a matter of contacting the headquarters in Spain andMake an order, always better if a large order is made (perhaps between 2 or 3 patients).
Insulin is a bit more difficult. Buying without a medical recipe is illegal ... No pharmacy or website should sell insulin without a medical recipe.
For emergency situations, doctors without borders collect medications and health material.He distributes them to where they know what they need, sometimes in the third world and sometimes within Spain.
You could investigate for the City of Torrevieja. Ask for the social worker or by the Department of Social Services, maybe there is someone who knows more thoroughly the reality of NGOs (non -guernamental organizations) who work for your area.
Another possibility is to ask the Official Pharmaceutical College of Alicante, they should answer how they use unused medicines that patients return.