Is castor oil really effective for pain related to Achilles tendonitis or carpal tunnel?

Castor oil is a natural product that contains ingredients that may have anti-inflammatory and analgesic properties. It can be used topically for massages on painful areas, but it is recommended to test it on a small area as it may cause allergic reactions. It is important to wash hands after use to avoid contact with eyes. Some patients may feel the effects after 3-4 weeks, but there is not enough data to confirm its effectiveness in relieving pain. Patients can try it to see if they experience relief.