Attended a talk on Spiritual Healing at Dr Anand's home. 

I personally believe in Reiki and Christian Science, but mostly (more, and less stressful)  I prefer to believe in the curative power of medication. I like the fact that one of the Ratnas (gems) mentioned in the Shrimad Bhaagvad is Dhanvantari (physician for all Gods, power of medicines)

So, in acute or chronic cases, I take medication. Rather than stress that I have more faith in God than in medication, I prefer to visualize the Lord in medication and 'believe' that the medicine will not harm me.

There is a mantra which you may use before taking medication:
Om Rum Rudra Rog naashaaye
dhanvantarye phat