The full answer
Often days to weeks for initial symptoms — but it varies a lot
Many people notice some improvement in digestive symptoms within a couple of weeks of starting a strict gluten-free diet, though the timeline varies widely depending on how long celiac disease went undiagnosed and how much intestinal damage had built up.
Full recovery takes longer
While early symptom relief can come relatively quickly, complete intestinal healing takes considerably longer — often months to a couple of years — and some symptoms like fatigue may take longer to resolve than digestive ones. If symptoms persist, see why symptoms sometimes continue after going gluten-free.
Important context
Individual symptoms, reactions, medical histories, food products, and local labeling rules can vary. Community experiences are not medical evidence.
For personal medical decisions, diagnosis, testing, or treatment, consult a qualified healthcare professional.