All GLP-1 medications share the same core actions. - Reduce appetite by activating satiety centers in the brain - Slow digestion so you feel full longer after meals - Improve blood sugar by stimulating insulin only when needed - Reduce cravings for high-calorie, fatty foods over time

GLP-1 Medications Explained: What They Are, How They Work, and Which One Is Right for You

May 29
4 min read

Updated: 6 days ago

GLP-1 medications have become some of the most talked-about tools in weight management and metabolic health. But with multiple formulations available, it can be hard to know what makes each one different and which might be the right fit for you.

This post explains what GLP-1 medications are, how they work, and breaks down each of the five formulations we offer in plain language. This is educational content only and is not medical advice. All GLP-1 medications require a prescription and medical supervision.

What Is a GLP-1 Medication?

GLP-1 stands for glucagon-like peptide-1, a hormone your gut naturally produces after eating. Its job is to tell your brain you are full, trigger insulin release to manage blood sugar, and slow digestion.

GLP-1 medications are synthetic versions of this hormone that last far longer in your body than the natural version. By keeping this signal active for hours or days, they help reduce appetite, improve blood sugar, and support sustained weight loss when combined with lifestyle changes.

They are not stimulants and they do not directly burn fat. They work by retraining the signals between your gut and brain around hunger, fullness, and blood sugar.

How They Work

All GLP-1 medications share the same core actions.

Reduce appetite by activating satiety centers in the brain
Slow digestion so you feel full longer after meals
Improve blood sugar by stimulating insulin only when needed
Reduce cravings for high-calorie, fatty foods over time

The 5 Formulations Summarized

	Semaglutide	Semaglutide + B6	Tirzepatide	Tirzepatide + B12	Tirzepatide + B6
Receptors	GLP-1	GLP-1	GLP-1 + GIP	GLP-1 + GIP	GLP-1 + GIP
Added Nutrient	None	Vitamin B6	None	Active B12	Vitamin B6
Best For	First-time GLP-1 users	Nausea-sensitive clients	Maximum weight loss	Energy and nutrient support	GI comfort during titration

The 5 Formulation Explained

1. Semaglutide

The original and most widely studied GLP-1 medication, known by the brand names Ozempic and Wegovy. It activates the GLP-1 receptor once weekly via a subcutaneous injection, reducing appetite and improving blood sugar. Clinical trials show an average weight loss of around 15 to 16% of body weight over 68 weeks.

*Best for: Most people starting GLP-1 therapy for the first time.

2. Semaglutide + Pyridoxine HCl (Vitamin B6)

Same semaglutide, with vitamin B6 added to help manage nausea, the most common side effect during early dose increases. B6 has been used for decades to treat nausea and is included here to help clients stay comfortable and consistent during titration.

*Best for: People who are sensitive to nausea or want a smoother start.

3. Tirzepatide

The next generation. While semaglutide activates one receptor, tirzepatide activates two: GLP-1 and GIP. That dual action produces significantly stronger results. Clinical trials show average weight loss of up to 22.5% of body weight, the highest ever recorded for a weight loss medication, and head-to-head studies confirm tirzepatide outperforms semaglutide on weight loss outcomes.

*Best for: Clients seeking the strongest weight loss outcomes.

4. Tirzepatide + Methylcobalamin (Active B12)

Tirzepatide paired with methylcobalamin, the bioactive form of B12 that your body can use immediately without conversion. B12 is added because GLP-1 medications can interfere with nutrient absorption over time. Studies show nutritional deficiencies develop in over 22% of GLP-1 users within a year. B12 supports energy, nerve health, and red blood cell production during weight loss.

*Best for: Clients on tirzepatide who want to protect energy levels and prevent nutritional gaps.

5. Tirzepatide + Pyridoxine HCl (Vitamin B6)

Tirzepatide with B6 added for nausea management during dose escalation, the same rationale as the semaglutide + B6 formulation above. The full power of tirzepatide's dual-receptor action, with added GI comfort support.

*Best for: Clients who want tirzepatide but are concerned about GI side effects.

What You Need to Know About Long-Term Use

GLP-1 medications work best as a long-term tool, not a short-term fix. Research consistently shows that most people regain a significant portion of lost weight after stopping, and they tend to regain it faster than with traditional dieting.

The best outcomes come from combining medication with protein-focused nutrition, resistance training to preserve muscle, regular monitoring, and a long-term plan discussed with your provider before you start.

Our Commitment to Quality

At Vitality Supports, all compounded GLP-1 formulations we consult on are sourced exclusively through US-licensed compounding pharmacies that undergo independent third-party testing for potency, purity, and sterility. The FDA has raised concerns about dosing errors and contamination in lower-quality operations. We only work with pharmacies that meet the highest standards so your safety is never a question.

Not Sure Which Option Is Right for You?

Picking the right GLP-1 formulation is not a one-size-fits-all decision. At Vitality Supports, we walk you through your options honestly and build a long-term plan around your goals. All medications are sourced through US-licensed, third-party tested compounding pharmacies.

Book your GLP-1 consultation today

This content is for educational purposes only and does not constitute medical advice. Always consult a qualified healthcare provider before starting any new therapy.