Just so everyone is on the same page....
Yes, a vaccine is what Gib noted above. And those are virus-specific and take time to develop, even if test conditions are relaxed.
A treatment is not a bad thing; if we had something that worked for those with the worst symptoms, it is almost as good as having a vaccine. It won't eradicate the disease, as Gib correctly notes. But it will allow the disease to run its course until a sufficient number have achieved at least temporary immunity, while minimizing deaths. A vaccine will be needed to end this regardless, but the gun is no longer at our head to do so if we have an effective treatment. And because the medical community is trying a boatload of stuff developed for other diseases, if we roll the dice lucky we might find something that was not specific to this virus, but which works. Or at least mitigates the danger to some degree. Even if there is some risk of collateral damage to other organs...there will be times when that risk is worthwhile. Unfortunately, most treatments are most effective the earlier they are used. Which means if you wait until the last minute, even something that is effective if used in time may not work. Understanding the trade-offs and risks is critical to using any treatment prior to the last minute, "Hail Mary" moment. And it takes some time to get that info, even if some anecdotal successes are suspected.