"Rahu Yantra is to appease the Shadow planet Rahu. called the North Node in the West. which is one of the known natural malefic in astrology. Which is symbolized as a dragon with no body that swallows the sun or the moon causing eclipses The Rahu Kal is considered inauspicious in Vedic ASTROLOGY and numerology. Rahu is very much affecting the world in general. When Rahu (Dragon's Head) is malefic in the chart or horoscope, the use of Rahu yantra is very benefic and favourable and indicates sucess in business, Victory over enemies, and all round success. Rahu Yantra is best used to remove the negative effects of Rahu. Diseases like paralysis, insanity, limb injury, cancer, tumors, heart pain, rheumatism, bronchitis, etc. are caused by Rahu, other problems are anger, leaving home, dissatisfaction, fear complex, liar, slow working change of residence, disfavor of superiors, etc. Rahu is supposed to be a malefic planet, energetic, low in vibration, hedonistic, and eternally dissatisfied. It also makes native lazy and lethargic at times. A strong Rahu gives the individual worldly powers and success.