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Many Texas pharmacies are having trouble keeping over-the-counter medications on their shelves. The arrival of cold and flu season is adding to the problems with the supply chain, leading to shortages of cold and flu meds and sinus remedies. High demand because of the omicron surge is making coronavirus rapid tests especially hard to find. Spokespersons from CVS and Walgreens say the companies are working with their suppliers to make sure they have enough supplies to meet customer demand.