According to Shri B. V. Raman, main Jyotisha factors for alcoholism include:
Mesha lagna - Mesha Chandra
Kanya lagna - Kanya Chandra
Neechcha Shukra, afflicted Shukra
afflicted Shani
Scorpio Rashi governs intoxicants. Neechha (debilitated) Venus or Saturnalso govern same.
When Scorpio happens to be the 8th house or the 3rd house, and Venus or Saturn occupies an afflicted position, the native will be addicted to intoxicants."
~~ B. V. Raman. (1992.)