Probulin's 40% off sale on 3 Critical Care Products is the main offer right now and gives you the biggest discount on those specific items. The sale runs until December 19, 2026, and applies to one-time purchases only on the Probulin website. If you subscribe instead, you get 15% off every delivery, which is a smaller discount but adds up over time.
Buying the 3 Critical Care Products once. The 40% off sale is your best choice here. On a $90 order of the three products, for example, you save $36 and pay $54. This discount cannot be combined with other offers on that purchase.
Setting up a subscription for the 3 Critical Care Products. The 15% recurring subscription discount is your option here, and you save 15% on every delivery you receive. On a $90 first order, you save $13.50 and pay $76.50. Over time, the savings compound as you receive more deliveries.
Comparing one purchase to a subscription. If you plan to buy the three products only once, the 40% off sale gives you a much bigger saving than a subscription would on that single order. If you use a subscription, you get a smaller discount per delivery but the benefit is that it applies to every recurring order, so the total saving grows the longer you stay subscribed. Choose the sale if you want maximum savings on one purchase; choose the subscription if you plan to reorder regularly and want continuous savings.
Our records show that Probulin has listed 38 offers in the 12 months to October 2026, and our team tested 3 Probulin offers at checkout in that time. The biggest sale we saw in that period was up to 50% off in November 2025, so the current 40% off sale is a strong offer, though keep an eye out for bigger deals around July and September when we typically see more new offers added to the page.