5 Day Enriched Juice Fasting Detox Retreat in Koh Chang, Thailand

The Spa Koh Chang Resort’s five-day program is a fasting retreat, not a retreat with fasting bolted on — three of the five days involve no solid food at all, only carefully structured cleansing drinks, framed by a pre-cleanse day and a guided return to solid food afterward. Group size is capped at two participants, and accommodation is private throughout the stay on Koh Chang, Thailand’s second-largest island.

Daily structure centres on supervision rather than free time: a self-administered colon-cleansing session once a day, a 60-minute massage or spa treatment, a 30-minute abdominal detox massage, and a 30-minute herbal steam bath or far-infrared sauna, each running three times across the stay. Program supervision and on-call assistance are available throughout, and a breaking-fast kit plus herbal supplements support the transition back to solid food once the three fasting days end.

Per the property’s own FAQ material, solid food is available only during the pre-cleanse phase — once fasting begins, participants receive juices, herbal drinks, and supplements, with no solid food until the break-fast stage. Feeling low-energy during the fast is described as normal and monitored daily, with rest and adjustments offered if needed. Gentle activities such as yoga or massage are encouraged as part of this Enriched package; guests on the resort’s separate Basic package book those à la carte instead.

Watch out: The FAQ is explicit that this isn’t a program to combine with outside excursions — staying on-site for the full five days is how the resort delivers supervision and support, so it isn’t a fit for anyone wanting to explore the island freely mid-retreat.

For a longer fast at the same resort, the 9-Day Enriched Full Fasting Detox Retreat runs seven fasting days instead of three, with twice-daily colon cleansing and seven rounds each of the massage, abdominal treatment, and sauna sessions, from $1,102. Both retreats share the same operator, the same two-person group cap, and the same Yin/Zen framing — the choice mostly comes down to how long a fast someone is ready to commit to.

Airport transfers, flights, travel insurance, the visa fee, and any treatment or activity outside the set itinerary are not included. Free cancellation applies at booking. Reaching Koh Chang means flying into Bangkok, then a bus-and-ferry combination or private transfer to the island — worth planning as a full travel day each way, and worth following the resort’s pre-cleanse guidance closely before the fasting days begin.