How often do MELAWIN Melatonin Implants need to be administered? For large animals, administer two implants every 30 days. Smaller animals need only one implant at a time. MELAWIN Melatonin Implants2025-01-09T14:59:11-06:00 Share This Story, Choose Your Platform! FacebookXRedditLinkedInWhatsAppTelegramTumblrPinterestVkXingEmail About the Author: MELAWIN Melatonin Implants