LL-37 Injectable
$219.00
Initial charge of $34 for consult, price of medication(s) charged upon consult approval.
Barrier and immune–resilience peptide support designed to help your body defend, repair, and rebound—guided by a Wellcore provider and integrated into your Immune Resilience program.
LL-37 is a human-derived antimicrobial peptide (AMP) that your body naturally produces as part of its innate immune defense. In longevity and performance programs, LL-37 is used for its potential roles in supporting:
- Barrier integrity of skin and mucosal tissues
- Local immune readiness and resilience
- Healthy response to environmental and microbial stressors
- Overall recovery and “bounce-back” capacity
As an injectable therapy, LL-37 is positioned as a signal-level immune and barrier–support tool, not an antibiotic, vaccine, or cure for infection. It’s designed to complement—never replace—core pillars like sleep, nutrition, micronutrients, gut health, stress management, and appropriate medical care when you’re sick.
LL-37 Injectable is a prescription-only peptide available through Wellcore after a full clinical evaluation.
Important Note: LL-37, when provided as a compounded peptide, is not reviewed or approved by the FDA for immune support or any other indication. It is dispensed as a compounded medication by licensed U.S. 503A compounding pharmacies for individual patients under a provider’s prescription. Your Wellcore provider will determine if LL-37 is appropriate for you based on your health history, goals, and current guidelines.
LL-37 is part of your body’s innate immune toolkit—the fast-response system that helps manage early encounters with environmental and microbial challenges.
While research is still evolving and human data are limited, LL-37 is being explored for its potential to:
- Interact with microbial membranes as an antimicrobial peptide
- Support surface and barrier defenses (skin, mucosa, and other exposed tissues)
- Help modulate local immune response and inflammation balance
- Contribute to tissue repair signaling in stressed or challenged areas
In a Wellcore protocol, LL-37 is used with the goal of supporting:
- How your system responds when life, training, or travel challenge your defenses
- Barrier integrity as part of an overall Immune Resilience plan
- Long-term recovery and robustness, not short-term quick fixes
Your provider will be transparent about what is known, what is emerging, and what remains experimental with LL-37 so you can make an informed decision.
Instead of “immune boosters” that promise the impossible, LL-37 is positioned as a precision tool for people who think of immunity the way they think of training—strategic, long-view, and grounded in reality.
Barrier & innate-defense focus
- Oriented around barrier health and innate immune readiness, not just generic “boosting”
- Designed to support how your system meets and manages everyday challenges
- Fits naturally into Immune Resilience and Prevention & Healing frameworks
Signal-level, not a sledgehammer
- Aims to support modulation and coordination, not blunt over-activation
- Built to complement things you’re already doing—sleep, micronutrients, movement—rather than replace them
- Intended as part of a stacked plan that may also include thymosin peptides, BPC-157 blends, NAD+ programs, and more
Clinician-guided, at-home protocol
- Available only after a telehealth evaluation with a licensed Wellcore provider
- Dose, schedule, and cycle length are personalized to your health story, risk profile, and goals
- Self-administered at home via simple subcutaneous injections
Quality and transparency
- Compounded by U.S.-licensed 503A pharmacies, where permitted
- Clear education and informed consent for emerging therapies
Ongoing access to the Wellcore clinical support team for questions and refinements
LL-37 Injectable is designed for high-intent adults who recognize immune resilience and barrier health as critical pieces of long-term performance and longevity.
You may be a good fit if you:
- Want to support immune readiness and tissue defenses as part of a long-term plan
- Live, train, or travel in ways that place repeated stress on your system and barriers
- Are already investing in sleep, nutrition, gut health, micronutrients, and stress management
- Prefer a signal-level, clinician-guided tool over one-size-fits-all “immune boosters”
- Are comfortable with an injectable peptide protocol and regular check-ins with a provider
LL-37 is not appropriate for:
- Replacing antibiotics, vaccines, or urgent medical care when you’re ill
- Treating acute infections or serious immune conditions on its own
- DIY experimentation without medical supervision
Final eligibility is always determined by a Wellcore provider after a complete review of your medical history, medications, and goals.
Your exact protocol will be tailored by your provider. General guidance may include:
- Route: Subcutaneous injection (just under the skin), typically in the abdomen or thigh
- Frequency: Used on a regular schedule (for example, several times per week), or in defined cycles around higher-stress seasons, as directed
- Timing: Often taken at consistent times of day; some protocols may align with training cycles, travel, or recovery windows
- Cycles: Typically used in time-bounded blocks (e.g., a number of weeks “on,” followed by reassessment or a break)
- Site rotation: Rotate injection sites to minimize local irritation and improve comfort
You’ll receive:
- Step-by-step instructions for drawing up, injecting, storing, and safely disposing of supplies
- Guidance on how LL-37 fits with thymosin, BPC-157 blends, NAD+ programs, and other therapies in your stack
- Support on how to coordinate protocols around travel, training phases, and seasonal demands
Never adjust your dose, frequency, or cycle on your own—always consult your provider first.
LL-37 Injectable Package
- Multi-dose vial(s) of compounded LL-37 at your prescribed concentration
- Syringes and injection needles appropriate for subcutaneous use
- Alcohol swabs and basic injection supplies
- Clear written instructions for dosing, administration, storage, and safe disposal
- Cold-packed, discreet shipping delivered directly to your home where permitted
- Access to the Wellcore clinical support team for ongoing guidance and program optimization
Specific vial strength, volume, and refill timing will depend on your prescription and partner pharmacy.
Your Treatment Journey
Start Your Online Evaluation
Get approved by provider
Receive Your product at Home
Start treatment with provider guidance
Is LL-37 an antibiotic or antiviral drug?
No. LL-37 is not an antibiotic or antiviral drug and is not a substitute for appropriate treatment of infections. It is an endogenous antimicrobial peptide, used in longevity and performance programs with the goal of supporting your innate defense and barrier environment, not as a direct treatment for specific infections.
Will LL-37 prevent me from getting sick?
No therapy can guarantee you won’t get sick. LL-37 should be viewed as a supportive tool for immune resilience and barrier health, not a shield or guarantee. It works best as part of a comprehensive approach that includes sleep, nutrition, movement, vaccinations, and timely medical care when needed.
Can LL-37 help with chronic or autoimmune conditions?
LL-37 is sometimes discussed in the context of immune modulation, but it is not a stand-alone treatment for chronic illness, autoimmune disease, or serious immune disorders. If you have these conditions, your provider will weigh potential risks and benefits very carefully and may decide LL-37 is not appropriate.
Can I stack LL-37 with Thymosin, BPC-157 blends, or other peptides?
Often, yes—when thoughtfully designed and monitored. LL-37 is commonly considered as part of Immune Resilience and Prevention & Healing stacks that may also include:
- Thymosin-based peptides
- BPC-157/GHK-U/KPV/TB500 or related repair blends
- MOTS-c, NAD+ programs, and other longevity tools
Your Wellcore provider will review your entire stack (prescription, OTC, and supplements) and design a safe, coherent protocol.
Is LL-37 FDA-approved?
No. LL-37 is not FDA-approved for immune support, infection, or any other indication. When used clinically, it is provided as a compounded medication prepared by U.S.-licensed 503A pharmacies for individual patients under a provider’s prescription, often for off-label or experimental use. Your provider will discuss current evidence, limitations, and alternatives as part of informed consent.
Do Not Use This Medication If You:
- Have a known allergy or hypersensitivity to LL-37 or any component of the formulation
- Are pregnant, planning to become pregnant, or breastfeeding
- Have been clearly advised that peptide-based or immune-modulating therapies are not appropriate for you
Use With Caution If You:
- Have a history of cancer, especially where immune or growth signaling is a concern
- Have significant autoimmune, hematologic, or immune deficiency disorders
- Have advanced liver, kidney, or cardiovascular disease
- Are using medications that strongly influence immune function, coagulation, or inflammation
Always provide your Wellcore provider with a complete list of:
- Medical diagnoses and prior immune-related evaluations
- Prescription and over-the-counter medications
- Supplements, other peptides, and hormone therapies
Possible Side Effects May Include:
- Mild injection-site redness, itching, or discomfort
- Headache or mild fatigue
- Transient changes in how you perceive stress, recovery, or local tissue sensations
- Rarely, allergic reactions (rash, itching, swelling)
Stop the medication and contact your provider if you experience persistent or concerning symptoms. Seek immediate medical care if you develop signs of a severe allergic reaction (such as hives, swelling of the face, lips, tongue, or throat, difficulty breathing) or any rapidly worsening symptom.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. All information provided here is for educational purposes only and does not replace personalized medical advice from a qualified healthcare professional.
Important Information About Compounded LL-37 Injectable
- Compounded medications are not reviewed or approved by the FDA and do not undergo the same pre-market testing as FDA-approved drugs.
- Wellcore’s LL-37 Injectable is prepared using peptide ingredients by FDA-registered, U.S.-licensed 503A compounding pharmacies, where available and clinically appropriate.
- Availability and specific formulations may vary by state, evolving clinical guidance, and pharmacy partners.
Wellcore does not practice medicine or provide direct medical care. All prescriptions, treatment decisions, and care plans are made independently by licensed healthcare providers using their professional judgment. Images and product depictions are for illustration only; actual packaging and supplies may vary.
*If you are interested in a prescription product, Wellcore will coordinate a telehealth visit with a licensed medical provider who will determine whether you are an appropriate candidate based on your health profile and current standards of care. If approved, a prescription will be issued and filled by one of our partner pharmacies unless you request a different pharmacy. All prescriptions are subject to provider discretion and clinical appropriateness.