Shaykh al-Albānī explains that taking the means as part of reliance includes only definitive affairs or those about which there is overwhelming belief that they are successful and efficacious. As for what is less than them, then they are to be abandoned for pure reliance.
"No matter how much strength [of knowledge] and expertise a woman has been given, she will not be able to encompass the hideouts and hiding-places of men [in these affairs]. This is extremely difficult."
Supplication and seeking refuge with Allāh is more useful and more beneficial than treatment with medications, and the effect and influence of that on the body is greater than the effect of bodily medicines.