A primary care doctor who spends considerable time researching peptides has decided to address the flood of questions she receives about these compounds.
Dr. Ashley Frzy runs a direct primary care clinic in Mesa, Arizona, where she works directly with patients outside the traditional insurance system.
Her approach stems from a practical concern: if patients are purchasing compounds online and self-injecting anyway, shouldn’t their doctor understand these substances better than they do?
In her recent video breakdown, she tackles the most frequently asked questions about peptides while making one thing crystal clear—this isn’t medical advice, and she’s absolutely not encouraging anyone to buy random substances off the internet.
Jump to:
- Understanding Peptides: The Cellular Text Message
- The Legal and Safety Gray Zone
- Peptides Versus Steroids: A Critical Distinction
- The Research Reality Check
- Practical Considerations Before Starting
- Managing Expectations: Timeline and Results
- Administration Methods Matter
- Stacking: Synergy and Stupid Mistakes
- Side Effects and Long-Term Concerns
- The Purity Problem Nobody Discusses
- Why Mainstream Medicine Hasn’t Embraced Peptides
- The Mitochondrial Connection
Understanding Peptides: The Cellular Text Message
Peptides are simply chains of amino acids—the same building blocks that make up proteins. When introduced into a living body, they interact with cellular receptors.
You can think of them like short, powerful text messages between cells. They provide messages such as repair this, build that, turn this on, turn this off, that kind of thing.
The range of potential applications is extensive, spanning muscle gain, fat loss, brain health, energy enhancement, sleep improvement, and inflammation reduction.
If you want something simple that actually works, this is one of the most effective tools I’ve used to build strength, conditioning, and endurance without needing a full gym setup.
- Full-body training with one weight using swings, squats, and presses
- Solid cast iron build that feels stable and lasts for years
- Comfortable grip that makes high-rep workouts easier to handle
The Legal and Safety Gray Zone
When it comes to legality, Dr. Frzy describes the situation as complicated. Some peptides can be prescribed, but most currently fall outside her prescribing authority.
Safety depends entirely on context—which specific peptide, what research supports it, and how it’s being used.
See, in the right hands, in the right environment, under the right circumstances, peptides can be very safe. In the wrong hands, not so much.
She emphasizes that proper research should always begin with measurable goals. That’s the foundation for determining safety.
Peptides Versus Steroids: A Critical Distinction
Despite common confusion, peptides are not steroids. The fundamental difference lies in their mechanism and duration of action.
Peptides break down relatively quickly after performing their cellular function. Dr. Frzy likens them to “little engine tuners” rather than takeover agents.
Steroids, by contrast, function as hormone takeovers that fundamentally alter the body’s chemistry by taking control of hormonal processes.
If you want something simple that actually works, this is one of the most effective tools I’ve used to build strength, conditioning, and endurance without needing a full gym setup.
- Full-body training with one weight using swings, squats, and presses
- Solid cast iron build that feels stable and lasts for years
- Comfortable grip that makes high-rep workouts easier to handle
The Research Reality Check
Human testing data exists for some peptides. Dr. Frzy points to solid research on compounds like SS31 (a mitochondrial stabilizer) and tesamorelin (a growth hormone releasing hormone peptide).
However, many peptides only have animal studies and anecdotal evidence from online forums.
Now, some peptides only have animal data and Reddit data. Just know the difference.
Practical Considerations Before Starting
Blood Work Basics
While Dr. Frzy isn’t recommending peptide use, she notes that anyone considering them should probably check baseline health markers including kidney function, liver function, hormone levels, and IGF-1.
This doesn’t require an exhaustive panel—just basic foundational data.
Dosing Requires Math Skills
Understanding dilutions is non-negotiable. Dr. Frzy provides an example: if someone has a 6mg vial of a peptide and adds 3ml of bacteriostatic water, they need to calculate that equals 2mg per milliliter.
If you can’t figure out that that equals 2 milligrams per milliliter and understand the dosing that needs to be used after that, maybe you shouldn’t be doing it.
Each peptide has different trial dosing protocols and concentrations, adding another layer of complexity.
If you want something simple that actually works, this is one of the most effective tools I’ve used to build strength, conditioning, and endurance without needing a full gym setup.
- Full-body training with one weight using swings, squats, and presses
- Solid cast iron build that feels stable and lasts for years
- Comfortable grip that makes high-rep workouts easier to handle
Storage and Stability
After mixing with bacteriostatic water, most peptides remain stable for approximately 30 days when refrigerated. Some degrade faster, but the general timeframe is a few weeks before potency diminishes.
Managing Expectations: Timeline and Results
Peptides typically begin acting within the same day of administration. However, visible results require time and consistency.
Injury recovery, muscle development, and fat loss all demand patience along with proper exercise and lifestyle habits.
You can’t expect peptides to just be a magical answer for everything. They enhance the work. They don’t replace it.
Administration Methods Matter
While most peptides require injection, some can be taken orally with proven effectiveness. Research on BPC-157 in animals demonstrates oral activity.
Some peptides come as nasal sprays, but Dr. Frzy warns against assuming all peptides work this way. TB-500 in nasal spray form, for instance, won’t work because the molecule is too large to absorb through nasal mucosa.
Certain peptides like GHK copper work effectively as topical applications.
If you want something simple that actually works, this is one of the most effective tools I’ve used to build strength, conditioning, and endurance without needing a full gym setup.
- Full-body training with one weight using swings, squats, and presses
- Solid cast iron build that feels stable and lasts for years
- Comfortable grip that makes high-rep workouts easier to handle
Stacking: Synergy and Stupid Mistakes
Some peptide combinations create synergistic effects. The classic example pairs growth hormone releasing hormone peptides with growth hormone releasing peptides, such as CJC-1295 and ipamorelin.
However, some combinations prove counterproductive or dangerous. Taking multiple weight loss peptides simultaneously could lead to dangerous appetite suppression, resulting in muscle wasting and bone fragility.
You laugh, but I’ve seen people do this.
Popular blends exist that combine BPC-157, TB-500, and GHK copper in a single vial. Despite concerns, GHK copper remains stable when mixed with these peptides, though it degrades when combined with vitamin C in serums.
Side Effects and Long-Term Concerns
Side effect profiles vary dramatically by peptide:
- BPC-157 and TB-500: Generally minimal side effects
- Melanotan 2: Produces tanning but may cause permanent new moles
- Tesamorelin: Long-lasting in the body and shouldn’t be used indefinitely
Regarding cancer risk, Dr. Frzy explains that theoretically some peptides could promote cancer development if used inappropriately long-term, though she hasn’t seen proof of this occurring.
The Purity Problem Nobody Discusses
Most peptide websites display certificates of analysis (COAs) showing purity testing results, typically claiming 99% purity. These documents appear legitimate with scientific graphs and data.
If you want something simple that actually works, this is one of the most effective tools I’ve used to build strength, conditioning, and endurance without needing a full gym setup.
- Full-body training with one weight using swings, squats, and presses
- Solid cast iron build that feels stable and lasts for years
- Comfortable grip that makes high-rep workouts easier to handle
The uncomfortable truth? COAs can be and have been faked.
But let me be clear with you, COAs can and have been faked. And a PDF on a website does not guarantee purity.
The peptide market remains largely unregulated, with purity varying wildly between suppliers. This represents a significant safety concern and partly explains Dr. Frzy’s cautious stance.
Why Mainstream Medicine Hasn’t Embraced Peptides
Beyond the purity concerns, practical barriers prevent widespread medical adoption. Physicians face time constraints that make deep-diving into peptide research challenging.
Dr. Frzy acknowledges her research has been exhausting, though she genuinely enjoys the process. Most doctors simply don’t have bandwidth for this level of specialized investigation.
The Mitochondrial Connection
When asked about her favorite peptide, Dr. Frzy points to mitochondrial peptides like MOTS-c.
Really everything begins and ends in cellular energy. And the more we unlock about that, I think the healthier we’ll be.
Her focus on cellular energy production reflects a fundamental approach to health optimization—starting at the most basic level of human physiology.
If you want something simple that actually works, this is one of the most effective tools I’ve used to build strength, conditioning, and endurance without needing a full gym setup.
- Full-body training with one weight using swings, squats, and presses
- Solid cast iron build that feels stable and lasts for years
- Comfortable grip that makes high-rep workouts easier to handle
Dr. Frzy’s comprehensive overview provides critical context for anyone curious about peptides while maintaining appropriate caution about their use. Her message remains consistent: understanding these compounds matters, especially for medical professionals, but that knowledge doesn’t equal endorsement of unregulated self-experimentation.
