It is generally not recommended to take lactation tablets continuously for nine months without medical supervision. While these supplements (herbal or prescription) are useful for a short-term boost, long-term continuous use can lead to side effects. For instance, some herbal options can cause digestive issues, while prescription medications like domperidone carry cardiovascular risks when used long-term. The safest and most effective way to sustain milk production over nine months is through regular breast emptying via frequent feeding or pumping. Please consult your doctor or a lactation consultant to evaluate your milk supply and determine the safest plan for you and your baby.