Weight management is complex. It affects your long-term health, energy, confidence, and metabolic function. At 18 Spa in Loveland, CO, our medical weight loss service takes the guesswork out of the equation with FDA-approved GLP-1 medications, clinical monitoring, and personalized support from Kelly Wiechert, RN.
We treat obesity as the chronic medical condition it is — not a willpower problem. Our program gives your body the clinical support it needs to achieve sustainable, meaningful results.
We serve clients throughout Loveland, Fort Collins, Berthoud, Greeley, Windsor, and Northern Colorado.
We offer two evidence-based GLP-1 medication programs, both with full clinical monitoring and personalized dosing:
Semaglutide Program → Semaglutide (the active ingredient in Ozempic® and Wegovy®) is a weekly injectable GLP-1 receptor agonist that reduces appetite, slows gastric emptying, and regulates blood sugar. Clients typically see 10–15% body weight reduction over 6–12 months with consistent use and lifestyle support.
Tirzepatide Program → Tirzepatide (the active ingredient in Mounjaro® and Zepbound®) is a dual GIP/GLP-1 receptor agonist — meaning it targets two hunger-regulating pathways simultaneously. Clinical trials show 20–22% average body weight reduction, making it the most effective FDA-approved weight loss medication currently available.
Not sure which is right for you? We’ll review your health history, goals, and prior weight loss attempts during your consultation and recommend the program most likely to produce lasting results for your body.
Both medications work by mimicking hormones your body naturally produces after eating. They signal your brain that you’re full, reduce “food noise” — the constant preoccupation with eating — and slow the rate at which food leaves your stomach.
The result: you eat less, feel satisfied longer, and lose weight without the white-knuckle hunger that makes traditional dieting so difficult to sustain.
Unlike stimulant-based weight loss drugs, GLP-1 and GIP receptor agonists work with your body’s natural hunger regulation system. They do not increase heart rate or cause the jitteriness associated with older weight loss medications.
Step 1: Consultation We review your health history, current medications, metabolic markers, and weight loss goals. Kelly determines whether semaglutide or tirzepatide is the right fit and rules out any contraindications.
Step 2: Starting Dose Both medications begin at a low dose to allow your body to adjust and minimize common side effects (nausea, fatigue) that often improve after the first few weeks.
Step 3: Dose Optimization Over the following months, we titrate your dose upward based on your response and tolerance. Most clients reach their optimal dose within 3–6 months.
Step 4: Ongoing Monitoring Regular check-ins allow us to track your progress, assess side effects, monitor relevant health markers, and make adjustments. Kelly’s ICU background means you receive genuinely clinical oversight — not a quick telehealth sign-off.
Step 5: Maintenance Planning When you reach your goal weight, we work with you on a long-term maintenance strategy — including nutrition habits, activity integration, and optional wellness add-ons like our Wellness Program to support your metabolic health.
Our medical weight loss program may be right for you if:
If you’re not sure whether you qualify, book a consultation — we’ll review your situation directly and give you an honest answer.
Unlike online telehealth services where you might submit a form and receive a prescription without ever speaking to a provider, our program is genuinely high-touch. Regular check-ins allow us to monitor your progress, adjust dosages, and manage any side effects. Kelly’s ICU background ensures that we are always monitoring your overall health — not just the number on the scale.
Side effects of GLP-1 medications are typically mild and manageable. Nausea, constipation, and fatigue are the most common, particularly during the first 4–8 weeks as your body adjusts to the medication. We guide you through this adjustment period and adjust your dose if needed.
How much weight can I expect to lose? Results vary by individual, program, and starting point. Clinical data shows an average of 10–15% body weight loss with semaglutide and up to 20–22% with tirzepatide over 12–18 months of use. Your personal results depend on your starting weight, consistency, lifestyle habits, and how your body responds to the medication.
How long do I need to take the medication? Medical weight loss medications are typically used for 12+ months to achieve meaningful, sustained results. Many clients continue on a maintenance dose after reaching their goal weight. Stopping abruptly often leads to weight regain — we help you plan a responsible transition.
Is tirzepatide better than semaglutide? Clinical trials show tirzepatide produces greater average weight loss. However, both medications are highly effective, and the “best” medication depends on your health history, insurance, budget, and how your body responds. We review both options with you at consultation.
Do you take insurance? We are a cash-pay medical weight loss practice. Many insurance plans do not cover GLP-1 medications for weight loss; however, we offer transparent pricing and can provide documentation to support prior authorization requests through your insurer.
Can I do this if I live outside Loveland? Yes. We serve clients throughout Northern Colorado — Fort Collins, Berthoud, Greeley, Windsor, Johnstown, and surrounding areas. Contact us to confirm whether in-person visits are required for your program.
→ Read our step-by-step guide to starting medical weight loss in Loveland → See our RN-led medical weight loss checklist
Stop fighting your biology. At 18 Spa, we give you the clinical tools to work with it.
Call us: (970) 587-3008 Visit: 1135 N Lincoln Ave, Unit 1, Loveland, CO 80537 Serving: Loveland · Fort Collins · Berthoud · Greeley · Windsor · Northern Colorado
