is pineapple a natural antibiotic?
Pineapple also soothes sore throats. Tea tree oil is a fantastic natural antibiotic and it contains antiseptic compounds that are a very effective skin disinfectant. Depending on the severity of the condition, it can be used at a strength of 5 to 15 percent daily.ther Antiseptics. Following are some other natural antiseptics that may prove useful: 1  Molkosan â is derived from concentrated whey and can be used effectively against fungal infections and is an excellent antiseptic. 2  Use in the same way as youâd use iodine. 3  St Johnâs Wort â can be used as an external antiseptic.