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3. A sore throat:
Gargling oil: One who has a sore throat may not gargle oil, which means to retain oil in his mouth [for a period of time] prior to swallowing it as doing so is evident that one’s intentions are for healing.
Swallowing oil: However, he may swallow the oil and if he gets healed in the process, so be it.
Other Opinions: [However] there are opinions which prohibit to even swallowing the oil because [plain] oil damages the body and it is only common to drink it for healing purposes.
The Final Ruling: It all depends on the place and time that one is [living] in, that if it is not common for healthy people to drink it then it is forbidden [to be done].
Drinking the oil down in a drink: However, it is permitted to place a lot of oil in beet juice (Inigrone) and then swallow it as in such a case it does not damage the body and it is not apparent that it is being done for healing but rather simply for drinking. Nonetheless one must swallow it immediately and not retain it in his mouth, and it goes without saying that he may not spit it out, as then it is recognizable that he is doing so for healing.
Summary-A sore throat:
Gargling oil: One who has a sore throat may not gargle oil, even if he intends to swallow it. However, he may swallow the oil in an area where it is common to drink oil, and if he gets healed in the process, so be it. However, in places where this is not common then it is forbidden. However, it is permitted to place a lot of oil in beet juice and then swallow it, although one must swallow it immediately and may not retain it in his mouth, or spit it out.
Medicine: Is forbidden unless one is bedridden or weak throughout his entire body.
May one drink a hot tea to sooth a sore throat?
Yes, as it is not recognizable that one is doing so for healing purposes.
May one gargle salt water for a salt throat?
No, as it is recognizable one is doing so for medical purposes. If, however, one is bedridden or weak in his entire body, then this is allowed.
 Admur 328:39
 Lit. “then he gets healed”