Depends on the "scientist" who proposed the so-called "medicine."
Nothing is. But I'll trust modern science over ancient science. The ancient scientists knew much, don't get me wrong; what I've seen (very little) of early Vedic astrology is amazing.
I don't, and I fail to see the point, as it's still praying for something which is, though less selfish, still material. (Not to mention I don't believe it's even effective: rains will eventually come in drought; famines will eventually be satiated, and it will happen whether or not people are praying or performing yagna.)
When I pray or perform a simple (mostly improvised) ritual, it's for God's sake alone, or for inner strength like the wisdom to know what's right (somewhat selfish, I know.) I don't pray for the drought to end because I know it eventually will end, anyway.
The only time such a prayer would be appropriate, in my opinion, is when it's used as a form of expression, so an emotion or feeling doesn't get suppressed, which is mentally unhealthy at best and dangerous at worst.
Now, as an analogy, it could work, but the text REALLY has to be stretched, and it doesn't really fit the discussion at hand.