Moon is said to be malefic if it is in aspected or is associated with malefic planets or is in Scorpio Rasi or is situated in 4th, 6th, 8th, or 12th house.
To increase the effects of a benefic Moon in the horoscope Remedies to be done are as such :
1. Wear pearl ring set in silver finger touching the finger in little or ring finger or wear pearl locket set in silver touching the skin on Monday after purifying it by washing it with gangajaland milk and performing puja. Pearl weight should be around or more than five rati. Mantra of it is : 'Om Som Somaya Namah'.
2. Wear silver ring or bangle.
3. Wear white clothes on Monday.
4. While leaving for some important job, eat sugar and then go.
5. On Puranmasi (full Moon) day make kheer.
6. Keep idol of your God made in silver or marble at home.
7. If possible keep white cow at home.
8. Do business of Moon related articles, for example - Business of silver made articles, chemical and liquid oriented products like milk and its products, paper, cotton, sea related business etc.
9. Nail four silver nails in the four corners of the bed or house.
10. Wear four or six faced Rukraksh on Monday.
11. Wear safftic or pearl necklace.
12. Keep sindoor and unbroken rice in shankh at puja place in white cloth.
Remedies to be performed for malefic or weak Moon in the horoscope are as follows :
1. Tantrik mantra japa of Moon to be recited 108 times in a day. Mantra is : "Om shram shrim shorm sah chandraya namha (starting from Pooranmasi or on Monday of Shukla Paksha).
2. Wear Moon talisman in the neck or keep it in the puja (worship) place.
3. Keep Monday fast. Do puja of Shivlng made of parad or panch dhatu (5 metals). Read Shiv Chaiisa.
4. Drink water in silver glass.
5. Do not drink or give milk to anyone at night.
6. If Moon is weak in Cancer or Taurus then do Bhagwati Gouri puja, if it is weak in Aries or Scorpio then perform the puja of Goddess Durga, if it is less in strength then do puja of Ma Durga, it is near Sun then do puja of Goddess Chamunda. For health have Mahamritunjaya japa done. In case Ketu is with Moon then do puja of Lord Ganpati. Do path of Durga Saptshati.
7. Give articles related to Moon on Monday. They are: rice, pearl, white cloth, cow, silver goods, oil, milk etc.
8. Give food to unmarried girls.
9. Do business of white products.
10. Pour water on Shiviing.
11. Give water to cows.
12. Give white clothes to a holy man.
13. Do not go on long journey on full Moon or no Moon day.
14. Put silver Moon on the main entrance.
15. Give milk on Monday in Shiva Temple.
16. Put 21 grains of rice in Shankh and tie it in a white cloth and throw them in running water (river) on no Moon day.