⚡ Single Anastomosis · Strongest Simple Procedure
SADI-S Surgery in Mexico — From $6,900, ~75–80% Excess Weight Loss
Single Anastomosis Duodeno-Ileal Switch — the modern, simpler version of the duodenal switch. One connection instead of two, comparable weight-loss outcomes, easier to revise. Performed by Dr. Alejandro López’s team at Accredited hospitals.
From $6,900
Single Anastomosis
~85–90% improvement in metabolic health
Best for BMI 40+
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See How It Works
~75–80%Excess weight loss in 12–24 months
~85–90%improvement in metabolic health
20,000+Procedures by Dr. López’s team
From $6,900All-inclusive (flights excluded)
What Is SADI-S Surgery?
SADI-S — Single Anastomosis Duodeno-Ileal Switch — is the modern simplified version of the traditional duodenal switch. It combines a gastric sleeve with a single intestinal bypass loop (one connection instead of the two used in classic DS).
Result: a faster, simpler surgery with comparable long-term weight loss and metabolic outcomes. Easier to perform, easier to revise, and recovery is similar to a primary sleeve. Performed laparoscopically through 4–5 small incisions in ~2 hours.
- Only one connection — fewer technical risks than classic DS
- Comparable weight loss to traditional duodenal switch (~75–80%)
- Strong improvement in metabolic health (~85–90%)
- Best for BMI 40+ patients seeking maximum results with less complexity
Also known as: SADI-S is also called SIPS surgery (Stomach Intestinal Pylorus-Sparing surgery) or Single Anastomosis Duodenal Switch. All three terms refer to the same modern, simplified version of the duodenal switch procedure.
Three Mechanisms — One Surgery
Restriction, malabsorption, and hormonal change — combined into a single anastomosis surgery.
1
Sleeve Restriction
The stomach is reduced ~70% (just like a gastric sleeve). You feel full quickly and eat smaller portions automatically.
2
Single-Loop Bypass
A loop of small intestine is bypassed with one connection — simpler than classic DS but still strongly malabsorptive.
3
Hormonal Reset
Gut hormones shift dramatically — hunger drops, blood sugar improves, and many patients experience significant improvement in type 2 diabetes (results vary by patient).
How SADI-S Compares
SADI-S offers DS-level outcomes with bypass-level simplicity. The best of both worlds for many high-BMI patients.
| Factor | Roux-en-Y Bypass | SADI-S | Duodenal Switch |
|---|---|---|---|
| Excess weight loss (1–2 yr) | ~70% | ~75–80% | ~80% |
| improvement in metabolic health | ~80% | ~85–90% | ~95% |
| Connections (anastomoses) | 2 | 1 (simpler) | 2 |
| Surgery time | ~90 min | ~2 hr | ~2.5 hr |
| Best for BMI | 35–50 | 40–55 | 50+ |
| Easier to revise | Yes | Yes (easiest) | Harder |
| Vitamin requirements | Moderate | Higher | Highest |
| Starting price (Mexico) | From $5,900 | From $6,900 | From $7,200 |
Read: SADI-S vs Duodenal Switch — What’s the Difference →
Is SADI-S Right For You?
SADI-S is the strongest “simple” bariatric procedure — ideal for patients who want maximum weight loss with manageable surgical complexity.
✅Ideal Candidates
- BMI of 40–55 (or 35+ with severe metabolic disease)
- Type 2 diabetes — strong resolution rate
- Want stronger weight loss than bypass with less complexity than DS
- Plateau or regain after sleeve — sleeve-to-SADI revision
- Committed to lifelong nutritional requirements and follow-up
- Adults 21–65 in generally stable health
⚠️Sleeve, Bypass, or DS May Be Better If
- BMI under 35 — gastric sleeve likely sufficient
- BMI 60+ — traditional duodenal switch may be stronger
- Severe pre-existing GERD — Roux-en-Y typically better
- Cannot commit to strict lifelong vitamin protocol
- Pregnancy, or planning pregnancy in the next 18 months
SADI-S Pricing in Mexico
Prices include hospital, surgeon, anesthesia, hotel, and ground transport. Flights excluded.
| Procedure | From (USD) |
|---|---|
| SADI-S — Tijuana | $6,900 |
| SADI-S — Guadalajara | $7,300 |
| SADI-S — Puerto Vallarta | $7,300 |
| Sleeve → SADI-S Revision | From $7,700 |
| Duodenal Switch (traditional) | From $7,200 |
* Prices may vary based on individual evaluation. Financing available.
What’s Included When You Book
🏥Hospital stay (2 nights) & private room
👨⚕️Surgeon, anesthesia & medical team
🩺Pre-op labs & EKG
💊Post-op treatments
🏨Hotel stay near hospital
🚗All ground transport (airport ↔ hotel ↔ hospital)
📋Lifelong nutrition & vitamin schedule
📞30-day follow-up & lifetime support
Step-by-Step — From Consultation to Recovery
1Step 1
Free Online Consultation
Talk with a patient coordinator, share your medical history, review whether SADI-S is the right option.
2Step 2
Medical Approval & Date Booking
Complete a thorough medical questionnaire and lab review. Approved patients pick a surgery date and location.
3Step 3
Travel & Arrival
Fly into your chosen city. Driver pickup at airport, transfer to hotel near the hospital. Bilingual support throughout.
4Step 4
Pre-Op Day
Lab work, EKG, and one-on-one consultation with Dr. López. Final surgical plan confirmed.
5Step 5
Surgery Day
Laparoscopic SADI-S at an accredited hospital. ~2-hour procedure under general anesthesia.
6Step 6
2-Day Hospital Recovery
Inpatient monitoring with ICU-level nursing. Walking same day. Liquid diet starts the day after surgery.
7Step 7
Hotel Recovery + Flight Home
1–2 days at the hotel under continued team supervision. Most patients fly home day 5–7.
8Step 8
Lifelong Nutritional Follow-Up
Phone check-ins, detailed vitamin schedule, lab monitoring plan. SADI-S patients require strict long-term follow-up.
What Recovery Looks Like
Recovery is similar to gastric sleeve in the short term, with a strict lifelong vitamin protocol.
Week 1
Liquid Diet
Clear liquids, then full liquids. Sip slowly. Walk daily. No heavy lifting. Driver returns you to the airport.
Week 2–3
Pureed Foods
Pureed proteins, soft eggs, yogurt. Most patients return to desk-job work. Light activity.
Week 4–6
Soft Foods
Soft proteins, vegetables, soft fruits. Resume most activities. Begin gentle strength training.
Week 6+
Solid Foods & Lifelong Vitamins
Full diet of solid foods (small portions). Daily multivitamin, A, D, E, K, calcium, iron, B12 for life.
Where Dr. López Performs SADI-S
Same surgeon, same standard of care at all three locations.
Tijuana, Mexico
Fly to San Diego, 30-minute drive across the border. Lowest pricing — most popular for US patients.
Tijuana details
Guadalajara, Mexico
Mayo Clinic Network-affiliated hospital. Direct flights from Chicago, Texas, LA. Mexico’s medical capital.
Guadalajara details
Puerto Vallarta, Mexico
Pacific coast resort recovery. Direct flights from Canada and major US cities.
Vallarta details
Your Surgeon
Dr. Alejandro López — Medical Director
20 Years · 20,000+ Bariatric Procedures
Dr. López is one of a small group of Mexico surgeons routinely performing SADI-S. Trained at the University of Guadalajara with bariatric fellowship at Cook County Hospital in Chicago, he personally performs every SADI-S case using staple-line suturing for added safety.
“Seeing my patients happy with the results of my work — it will always be the goal of my life.”
SADI-S Patients — Before & After
Patients with severe obesity (BMI 40+) achieve duodenal-switch-level results with simpler surgery and easier recovery.
“Started at BMI 48 with type 2 diabetes. Down 110 lb at 14 months — blood-sugar significantly improved, no longer needing daily medication, finally able to keep up with my kids. The recovery was easier than I expected.”
— Carlos M., San Diego, CA (Verified Patient)
View All Patient Stories
SADI-S Patient Reviews
★★★★★
“BMI 49 with diabetes. SADI-S in Tijuana with Dr. López. Down 100 lb at one year, blood sugar from 9.2 to 5.4. Best decision of my life.”
— Robert K., Phoenix, AZ
★★★★★
“Sleeve regain after 6 years. Converted to SADI-S in Guadalajara. Down 80 lb at 11 months — way more effective than my original sleeve.”
— Jennifer L., Dallas, TX
★★★★★
“Doctor recommended SADI-S over DS because the recovery is easier. He was right — felt 90% normal at 3 weeks. Down 95 lb.”
— Karen B., Chicago, IL
★★★★★
“Vallarta location for my SADI-S. Hospital was excellent, recovered at the beach. Blood-sugar levels improved significantly within weeks. Down 85 lb at 9 months.”
— Lisa S., Calgary, AB
Frequently Asked Questions
Is SADI-S safe?
+Yes. SADI-S has been performed worldwide for ~15 years with strong safety data. Because it has only one anastomosis (versus two in classic DS), complication rates are typically lower. Dr. López performs it laparoscopically at Accredited- and COFEPRIS-accredited hospitals with 2-day inpatient monitoring and staple-line suturing.
How is SADI-S different from duodenal switch?
+SADI-S uses a single anastomosis (one connection), while traditional DS uses two. SADI-S is simpler, faster, and easier to revise. Weight-loss outcomes are very similar (~75–80% vs ~80%), though DS has slightly stronger metabolic effects in the long term.
How is SADI-S different from gastric bypass?
+Bypass creates a small pouch and reroutes intestine. SADI-S keeps a sleeve-shaped stomach and does a single intestinal bypass loop — producing stronger weight loss (~75–80% vs ~70%) and stronger improvement in metabolic health. SADI-S requires more vitamin supplementation than bypass.
How much weight will I lose?
+Most patients lose ~75–80% of their excess weight at 12–24 months — comparable to traditional duodenal switch and significantly more than bypass. Long-term studies show patients maintain 60% excess weight loss at 5+ years.
Will I need lifelong vitamins?
+Yes. Because SADI-S bypasses a section of intestine, fat-soluble vitamins (A, D, E, K) and minerals (calcium, iron, B12, zinc) are absorbed less efficiently. Daily multivitamin supplementation + annual labs are non-negotiable for SADI-S patients.
Can I have SADI-S if I had a sleeve already?
+Yes — sleeve-to-SADI conversion is one of the most common revisions for high-BMI patients with regain after sleeve. The existing sleeve serves as the restrictive component; we add the intestinal bypass loop. Pricing starts at $7,700.
Is SADI-S reversible
Is SADI-S reversible?
+Easier to reverse or revise than traditional DS because there’s only one connection. The sleeve component cannot be undone, but the bypass loop can be reconnected if medically necessary.
How long is recovery
How long is recovery?
+Same total trip duration as a primary procedure (5–7 days in Mexico). Most patients return to desk work in 2 weeks and full activity in 4–6 weeks. Recovery feels similar to gastric sleeve in the short term.
Ready for the Best of Both Worlds?
Free consultation. We’ll review whether SADI-S is the right balance of simplicity and power for your case.
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SADI-S vs Duodenal Switch — What’s the Difference?
Side-by-side comparison of weight loss outcomes, complication rates, complexity, and which procedure fits your case.