NutritionRx · GLP-1 Nutrition Support · Boston
For patients on GLP-1 medications
Alexis Beck, MPH, RD, LDN · Twenty-five years
The medication is real. The weight loss is real. But twenty-five to forty percent of GLP-1 weight loss is lean muscle mass without nutritional intervention. That, plus the micronutrient gaps and the underlying biology the prescription does not address, is the work NutritionRx does.
By application only. Coordinated alongside your prescribing physician.
What works
Semaglutide and tirzepatide produce clinically meaningful weight loss for most patients. The trials show it. The patients in this practice show it. Alexis is not anti-medication.
GLP-1 receptor agonists work by suppressing appetite, slowing gastric emptying, and improving glycemic control. For patients who meet the clinical criteria, they can be the right tool. Ozempic, Wegovy, Mounjaro, and Zepbound have all reshaped what is possible in obesity medicine over the last several years.
The medication is one tool inside a clinical plan. It is not the plan itself. The piece of the picture almost no patient is told about, before they start, is what happens around the prescription.
What's missing
What the medication will not do for you, and what is missing from a typical fifteen-minute prescriber appointment.
01
Lean mass loss at this scale changes resting metabolic rate, strength, functional capacity, and the regain curve once medication is discontinued.
What the work looks like: protein floor of 1.2 to 1.6 grams per kilogram of body weight, distributed across meals, with leucine adequacy at each one. For most adults, that is thirty-plus grams of high-quality protein per meal, three or four times a day.
02
Each one matters for different reasons (energy, cognition, sleep, gut motility) and each is a meaningful clinical decision, not a trip to a supplement store.
What the work looks like: baseline labs reviewed against intake. Targeted supplementation mapped to your specific gaps, not a generic multivitamin. Re-tested at intervals. Adjusted as the dose changes.
03
The medication is correcting in one direction while the underlying biology pushes in the other. When the medication stops, those drivers are still there.
What the work looks like: labs read against your medication dose, hormone and inflammation markers mapped, and a clinical plan built so the medication is a lever inside real treatment, not a substitute for it.
What NutritionRx does
NutritionRx does not prescribe GLP-1 medications. Alexis works alongside your prescriber. The work is what the prescription leaves out.
01
Alexis pulls your existing labs, your prescriber's notes, and your medication history. She reads them against your current dose, your weight trajectory, and your symptoms. The plan is built from a real clinical picture, not a pamphlet.
02
Daily protein floor sized to your body weight and dose, distributed across meals, with leucine adequacy. Resistance-training cadence coordinated with your physician's clearance.
03
Labs read against your intake. Supplementation mapped to your specific gaps, not a generic multivitamin. Re-tested at intervals as your dose changes.
04
Alexis sends notes, shares lab review, and coordinates dose-adjustment windows with nutrition load. Your physician stays the prescriber. She is the clinical nutrition arm of the team.
05
Most patients eventually come off the medication. The regain curve after stopping a GLP-1 is well documented when the underlying biology has not been addressed. Alexis supports the transition so the work holds, not just the prescription window.
The clinical nutrition support sits inside a larger methodology. Read the Treatment Triangle →
“Most patients are told what the medication will do. Almost no one is told what it won’t.”
Alexis Beck, MPH, RD, LDN
Sustained Results
The Majority Of My Patients
Keep It Off.
Long-term outcomes are what this practice was built for. Not the loss, the maintenance.
Individual results vary.
From her patients
A highly intelligent and intuitive clinician whose therapeutic techniques are leaps and bounds ahead of her peers.Long-time patient
★★★★★
She gets it. I have a treatment plan that makes sense for the first time.A NutritionRx patient
★★★★★
Alexis is an excellent resource and helps identify the root of nutritional patterns.Petey M.
★★★★★
Common questions
No. Alexis is a Registered Dietitian, not a physician. Your prescriber stays the prescriber. She is the clinical nutrition arm of the team.
Yes. Alexis sends clinical notes, shares lab review, and coordinates dose-adjustment windows with nutrition load. Most of her patients have an endocrinologist, primary-care physician, cardiologist, or bariatric specialist already on the case.
Discontinuation is its own clinical event. The regain curve after stopping a GLP-1 is well documented when the underlying biology and behaviors have not been addressed. Alexis supports the transition, not just the active prescription.
This is clinical nutrition therapy, not behavior coaching. The work begins with an intake, a lab review, and a clinical formulation read against your medication. Sessions are sixty minutes. Continuity is multi-year. The same standard as any other medical specialty.
No. NutritionRx is private-pay only. Most patients work with Alexis for two and a half to five years. She accepts patients by application.
Qualification takes less than a minute. Alexis reviews every submission personally and tells you whether NutritionRx is the right fit, even if it isn't.
Reserve a Consultation →