Semaglutide contraindications matter — and not every person is a safe candidate for GLP-1 therapy. At Miami Lakes Med Spa, our team screens every patient before writing a prescription for Semaglutide, Tirzepatide, Ozempic, Wegovy, or Mounjaro. Patient safety comes first, always.
Medical weight management can change lives. But GLP-1 receptor agonist therapy is still real medicine with real risks. Some people should never take it. Others can take it safely, but only with close monitoring from a qualified provider like Dr. Sabrina Gonzalez, DNP, APRN, under the oversight of Medical Director Dr. John Serpa, MD.
This guide walks you through who should not take GLP-1 medications, the warning signs to watch for, and how we keep patients across Miami Lakes, Hialeah, Miami Gardens, Miramar, Pembroke Pines, and Doral safe during treatment.
TL;DR
Semaglutide contraindications include personal or family history of medullary thyroid cancer, MEN 2 syndrome, severe pancreatitis history, and pregnancy. GLP-1 medications like Wegovy, Ozempic, Mounjaro, and tirzepatide also carry risks for people with severe gastroparesis or unstable gallbladder disease. At Miami Lakes Med Spa, Dr. Sabrina Gonzalez, DNP, APRN screens every patient before prescribing.
Key Takeaways
- Anyone with a personal or family history of medullary thyroid carcinoma or MEN 2 syndrome should not take semaglutide or tirzepatide.
- Pregnancy, breastfeeding, and planning pregnancy within two months are firm reasons to avoid GLP-1 therapy.
- Severe gastroparesis, active pancreatitis, and unstable gallbladder disease are major red flags for both semaglutide and tirzepatide.
- Miami Lakes Med Spa requires a free medical screening with Dr. Sabrina Gonzalez before any GLP-1 prescription is written.
- Sudden severe belly pain, vision changes, or signs of dehydration during treatment need urgent medical attention.
Clinical Summary
- Semaglutide contraindications per FDA labeling include medullary thyroid cancer history, MEN 2 syndrome, and prior serious reactions to GLP-1 agents.
- Tirzepatide carries the same boxed thyroid warning and similar contraindications as semaglutide.
- Common side effects: nausea, constipation, reflux, fatigue, and mild appetite suppression — usually fade within 4 to 8 weeks.
- Rare but serious risks include pancreatitis, gallstones, kidney injury from dehydration, and worsening diabetic retinopathy.
- Warning signs to stop and call us: severe abdominal pain radiating to the back, persistent vomiting, yellow skin, or fainting.
- Patients with type 1 diabetes, severe GI motility disorders, or BMI under 27 without metabolic risk are generally not candidates.
- Miami Lakes Med Spa providers review medical history, current medications, and labs when needed before starting therapy.
- Dr. Sabrina Gonzalez, DNP, APRN and Medical Director Dr. John Serpa, MD oversee every weight management plan.
- Aftercare includes weekly check-ins, hydration guidance, protein targets, and dose adjustments if side effects appear.
- Pricing at our clinic: Semaglutide $75/week, Tirzepatide $95–$150/week depending on dose, with a free lipo shot at every visit.
Absolute Semaglutide Contraindications: Who Should Never Take It
The FDA labels for semaglutide and tirzepatide list firm contraindications. These are not flexible. If any of the following apply to you, we will not prescribe GLP-1 therapy:
- Personal or family history of medullary thyroid carcinoma (MTC). Animal studies showed thyroid C-cell tumors. The risk in humans is unclear, but the warning is a boxed warning for a reason.
- Multiple Endocrine Neoplasia syndrome type 2 (MEN 2). This genetic syndrome raises thyroid cancer risk.
- Prior serious allergic reaction to semaglutide, tirzepatide, or any ingredient in the formula.
- Pregnancy or active breastfeeding. GLP-1 medications can harm a developing baby. Stop the medication at least two months before trying to conceive.
- Type 1 diabetes — these drugs are designed for metabolic and type 2 use, not type 1.
If you have any of these, we will talk about safer paths during your free consultation.
Who Should Not Take GLP-1 Medications Without Extra Caution
Some people are not fully banned from GLP-1 therapy — but they need extra screening, slower dosing, or a different plan. These relative contraindications include:
- History of pancreatitis. GLP-1 drugs can trigger another episode in vulnerable patients.
- Severe gastroparesis (slow stomach emptying). These medications slow digestion further and can make symptoms worse.
- Active gallbladder disease or recent gallstones. Rapid weight loss raises gallstone risk.
- Severe kidney disease. Dehydration from nausea or vomiting can worsen kidney function.
- Diabetic retinopathy. Fast blood sugar drops can sometimes worsen eye disease.
- History of eating disorders. Appetite suppression can trigger relapse.
- BMI under 27 with no metabolic risk factors. GLP-1 use here is off-label and rarely warranted.
Dr. Sabrina Gonzalez reviews each case individually. Sometimes the right answer is a lower starting dose. Sometimes it’s no GLP-1 at all.
Tirzepatide Risks vs Semaglutide Risks: What’s Different
Tirzepatide (the active drug in Mounjaro and Zepbound) acts on two gut hormone receptors — GLP-1 and GIP. Semaglutide (Ozempic, Wegovy) only acts on GLP-1. Both share most contraindications, but a few things differ.
Tirzepatide tends to cause stronger appetite suppression and slightly more nausea at higher doses. Some people lose weight faster than is safe without close monitoring. Gallbladder events have been reported with both, but rapid loss with tirzepatide may raise that risk a bit more.
The safety bottom line is the same: both medications need a screening visit, real medical history review, and ongoing follow-up. They are not vitamins. They should not be ordered from sketchy websites.
Red Flags During Treatment: When to Call Us Right Away
If you are already on semaglutide or tirzepatide, watch for these warning signs. Stop the medication and contact us — or go to the ER for severe symptoms:
- Severe belly pain that radiates to the back (possible pancreatitis)
- Persistent vomiting that prevents you from keeping water down
- Yellowing of skin or eyes, dark urine, or pale stools (possible gallbladder or liver issue)
- Lump or swelling in the neck, hoarseness, or trouble swallowing (thyroid warning)
- Sudden vision changes in diabetic patients
- Signs of low blood sugar if you take other diabetes drugs — shaking, sweating, confusion
- Severe dehydration — dizziness, very dark urine, fast heartbeat
- Mood changes or suicidal thoughts — rare but reported
Call 911 for chest pain, fainting, or severe shortness of breath. Call our office at 305-418-0392 during business hours for non-emergency concerns.
How Miami Lakes Med Spa Keeps GLP-1 Patients Safe
Our safety protocol is built around real medical oversight — not a one-click online prescription. Here’s what every patient gets:
- Free in-person consultation with Dr. Sabrina Gonzalez, DNP, APRN before any medication is prescribed.
- Full medical history review covering thyroid, pancreas, gallbladder, kidney, and family history.
- Medical Director oversight from Dr. John Serpa, MD on complex cases.
- Weekly check-ins at every dose visit to catch side effects early.
- Slow, careful titration — we do not push doses faster than your body can handle.
- Pharmaceutical-grade compounded medication from licensed US pharmacies.
- Bilingual support (English and Spanish) so nothing gets lost in translation.
With 2,000+ patients served and 10,000+ treatments performed, our team has seen the full range of responses. We know what’s normal, what’s a yellow flag, and what needs immediate action.
Aftercare and Prevention: How to Stay Safe on GLP-1 Therapy
Most side effects can be prevented or reduced with the right habits. Follow these basics:
- Hydrate aggressively — aim for 80–100 oz of water daily.
- Hit your protein target — at least 0.7g per pound of goal body weight daily to protect muscle.
- Eat smaller meals — large meals trigger nausea when your stomach empties slowly.
- Skip greasy, fried, and very sugary foods — they worsen GI side effects.
- Limit alcohol — it stresses the pancreas and liver.
- Move daily — walking helps digestion and protects lean mass.
- Don’t skip doses without telling us, and never double up to catch up.
If you’re scheduled for surgery or a procedure with anesthesia, tell your surgeon you’re on a GLP-1. Many anesthesiologists now ask patients to hold doses before surgery because of delayed stomach emptying.
GLP-1 receptor agonist therapy is powerful medicine — and like all powerful medicine, it requires real screening and real follow-up. If you’re considering semaglutide or tirzepatide, your safest first step is a free consultation with a qualified provider who will look at your full picture, not just your weight.
At Miami Lakes Med Spa, Dr. Sabrina Gonzalez, DNP, APRN and Medical Director Dr. John Serpa, MD lead a metabolic optimization program built around safety, transparency, and results. We serve patients across Miami Lakes, Hialeah, Miami Gardens, Miramar, Pembroke Pines, and Doral with flat-rate weekly pricing — Semaglutide at $75/week and Tirzepatide from $95/week, with a complimentary lipo shot at every visit.
Call 305-418-0392 or book your free consultation online. We’re open Tuesday through Saturday, 10 AM to 5 PM, at 7980 NW 155th St, Suite A, Miami Lakes, FL 33016.
Last reviewed: 2026. This content is for informational purposes and is not a substitute for professional medical advice. Individual results may vary. Always consult with a qualified provider before starting any GLP-1 medication.
Frequently Asked Questions
Can I take semaglutide if I have a family history of thyroid cancer?
If a close family member had medullary thyroid carcinoma (MTC) or MEN 2 syndrome, semaglutide and tirzepatide are not safe for you. Other types of thyroid cancer history need case-by-case review. Dr. Sabrina Gonzalez at Miami Lakes Med Spa will look at your records during your free consultation and recommend a safer path if needed.
What are the biggest tirzepatide risks I should know about?
The biggest tirzepatide risks are pancreatitis, gallbladder disease, severe nausea or vomiting leading to dehydration, and the boxed thyroid C-cell tumor warning. Rare risks include kidney injury, worsening diabetic eye disease, and allergic reactions. Weekly check-ins at Miami Lakes Med Spa help us catch problems early before they become serious.
Who should not take GLP-1 medications even if they want to lose weight?
People with medullary thyroid cancer history, MEN 2 syndrome, type 1 diabetes, active pancreatitis, severe gastroparesis, pregnancy, or breastfeeding should not take GLP-1 medications. A BMI under 27 without metabolic issues is also generally not a fit. Miami Lakes Med Spa screens every patient to make sure the medication is right for them.
What should I do if I get severe stomach pain on semaglutide?
Stop your next dose and seek medical care right away — severe belly pain that radiates to your back can signal pancreatitis. Go to the ER for unbearable pain or persistent vomiting. For less severe concerns, call Miami Lakes Med Spa at 305-418-0392 so Dr. Sabrina Gonzalez can evaluate your symptoms and adjust your plan.
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