Store your homemade promethazine gel in an airtight, opaque container in a cool, dark place. Refrigeration prolongs its shelf life, but isn’t strictly necessary.
Optimal Storage Conditions
A refrigerator (36-46°F or 2-8°C) is ideal, minimizing degradation of the active ingredient. Avoid temperatures exceeding 77°F (25°C). Direct sunlight accelerates breakdown; darkness preserves potency.
Shelf Life Expectations
Expect a shelf life of approximately 2-3 weeks under refrigeration. Unrefrigerated gel should be used within 1-2 weeks. Discard the gel if you notice any changes in color, texture, or odor, regardless of the time elapsed.
