In gurmat there is no ban against using medications and regardless of what medications a Gursikh uses it does not go against bibek rehit. This being said, it is the personal sharda and choice of an individual if they wish to stop the use of medications and rely solely on naam avkhaad to heal their illnesses. The philosophy of sarb rog ka aukhad naam does not rely on a Gursikh giving up the use of medications either, Gursikh's should always have their sharda only in Guroo Sahib to heal them but can use medications at the same time according to their own sharda.
There are many instances where Gursikhs have given up the use of medications and been fully healed through naam and bani, but there are also instances where while using medications Gursikh's have realized that only naam will actually rid them of the karamic debt that has given them the sickness and while japping naam have been cured.
It is important to fully understand why we get illnesses and then we can move on to the part of begging Guroo Sahib to heal us. Guroo Sahib tells us that the reason for all pain is forgetting Vaheguroo jee,"parmeshar te bhuliya viyaapan sabe rog" so logically by remember Vaheguroo jee we will be completely healed. There is no hukam to stop using medications but it doesn't make sense to keep using them because Guroo Sahib has already said,"sarb rog ka aukhad naam" so why would we keep using other medications when we already have the highest medicine of all?
No matter how many medications we use, only by japping naam will we ever truly be free from the pain of diseases. Until the wall of bharam is not destroyed with arrows of naam diseases will keep coming and pain will never depart.
Preetam Singh