Samples of medicine made from snake venom - that tube on the right might relieve your sciatica. On the photo is crystallised venom, from which the medicines are obtained.
Now that there's no risk, pick up your flute, your trombone, your poker, whatever you like, and wait. The cobra may remain in a threatening pose for hours. Annoy it. And as soon as it moves towards you, wallop it on the nose with your trombone. After all, the nose is the most vulnerable part of most animals.