Sabrina Johnson
Management
Yes. Thank you. Great question. And so as MarDee mentioned in her comments and you noted, R&D spending until we start the Sildenafil trial because of the nature of our arrangement on Ovaprene and the funds we had already remitted to the NIH under a collaborative research agreement, as you noted, there's not a lot left that we've already committed to spend on that. There's another $500,000 payment on that. But otherwise, right, the R&D spend, as MarDee noted, is significantly reduced compared to last year until we start a Sildenafil Phase III study.
And as I was mentioning in the response to Doug's question, we want to be prepared to move on that as quickly as we can and a single Phase III study, our expectations at this point, at least based on what we know today, it's around $15 million. So when you look at just our baseline burn, which we, in our last call, had provided some guidance that our expected G&A this year was about $10 million for the year, right? When you start just taking all of that into consideration with MarDee, $22 million is absolutely impactful.
And to your point, really gets us to some very important milestones n terms of Ovaprene, progressing opportunities potentially to look at some of that interim data timing and even to your point, depending on how enrollment goes even further than that, but we want to be very clear, right, in our communication that a single Sildenafil trial is $15 million. In the scheme of things, is that a lot when you think about the potential of like what Viagra is in the marketplace, no, but we do want to make sure we're being clear in our communication given that dollar amount in relation to the $22 million.