3. Apple Cider Vinegar
Apple cider vinegar is good for way more than salad dressing. You can get relief from your knee pain by both drinking it and applying it topically. When you drink it (2 tablespoons per day), apple cider vinegar can dissolve toxins within the knee that tend to spark inflammation.
The same effect occurs when you mix ACV with olive oil and massage it into your painful knees once a day for a week.