Spanish Fly cantharis Aphrodisiac Spanish fly cantharis is a completely natural product that has no side effects. It is enough to put about 10-15 drops in any liquid. Drops have no taste and smell.The only thing you will feel is the growing sexual desire. The Spanish Fly is the ideal way to increase your libido or that of your partner. In addition to the increased desire for sex, you will experience even more powerful and shattering orgasms. Improve your intimate life easily and harmlessly! Dosage instructions: Put 15-20 drops in any liquid Glass bottle of 5ml with dropper.