The correction that produced this section. Until August 2026 this page carried a set of personal receipts quoting roughly ₱14,200 for an Ozempic 0.5mg pen and attributing it to named Mercury Drug branches. The pen is ₱7,650, confirmed at Watsons, Rose Pharmacy and Southstar simultaneously, and Mercury Drug published none of those figures. The receipts are gone rather than adjusted, because a receipt you cannot produce is not evidence.
What the pen actually costs to run. At ₱7,650 an Ozempic 0.5mg pen is about $137 a month and roughly $34 a weekly dose. At ₱8,734 the 1mg pen is about $156 a month and $39 a dose. Those are the numbers to hold in your head walking into a counter, and a quote far above them is worth questioning before you pay it.
Where the stockout pattern actually bites. Mounjaro is the harder product to obtain here, not the more expensive semaglutide pens. Every Watsons Mounjaro strength checked was click and collect only, Southstar listed the 5mg KwikPen as available soon rather than in stock, and Ozempic itself has been rationed at branch level. Switching molecule because a shelf was empty is a different decision from switching because a prescriber recommended it, and only one of those belongs in a treatment plan.
Annual math, corrected. Branded Mounjaro 10mg at the Watsons listing is about $4,918 a year. Research-grade tirzepatide at 10mg weekly runs about $1,150 a year, plus four quarterly private lab panels at roughly $380 a year, so about $1,530 all-in. The gap is real, but it is a gap against a prescription medicine dispensed by a registered pharmacy, and closing it means taking the diligence work on yourself.