Unbelievable Natural Painkillers From Your Kitchen. By natural painkillers, we mean the ingredients in your kitchen such as ginger, capsicums and berries. Who would have ever thought? We have decided to reveal some of the best natural remedies to kill pain. We will also be revealing the strongest herbal pain killers, which can also be used as natural painkillers for back pain. Make muscle pain a memory with ginger. Cure a toothache with cloves. Heal heartburn with cider vinegar. Erase earaches with garlic. Chase away joint and headache pain with cherries. Fight tummy troubles with fish. Prevent PMS with yogurt. Tame chronic pain with turmeric. They are natural painkillers for chronic pain caused by arthritis, osteoporosis and menstrual cramps. Pineapples contain a substance called bromelain, which is very helpful in easing bloated stomachs and heaviness. It improves the blood circulation, inhibits all types of inflammation and also relieves cramps tremendously.