ペプチド療法とは？効果・副作用を解説｜BIANCA CLINIC

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2026.08.04

What Is Peptide Therapy? A Simple Explanation of Its Expected Effects, Benefits, and Drawbacks

Supervising Physician

Board Certified in Aesthetic Internal Medicine / Board Certified Specialist, American Society of Anti-Aging Medicine (A4M) Yoko Maeda

To maximize your beauty, care for both the inside and outside is essential. We aim to bring advanced anti-aging treatments, such as peptide therapy common overseas, to our Japanese patients. While aesthetic medical approaches may offer more gradual results, they are crucial for building the foundation that supports beauty and youth. We combine nutritional therapy and lifestyle improvements with hormone replacement, peptide therapy, and regenerative medicine to propose personalized treatment plans. We provide long-term support for health and beauty from within.

ペプチド療法とは？効果・副作用をBIANCA CLINICが解説

Peptide therapy is a general term for medical treatments that involve the administration of peptide preparations tailored to specific purposes via oral ingestion, intranasal application, or injection.

It’s not a single “miracle pill” that can “reverse aging” all on its own; rather, the medications and approaches used vary depending on the specific concern—whether it’s vitality, cognitive function, sexual function, body composition, or recovery.

When I’m seeing patients, I’m often asked, “If I undergo peptide therapy, will it fix everything—from my fatigue to my skin?” The answer is half yes and half no. When used properly, it can help support the foundation of your health, but it’s not a cure-all.

In this article, we’ll share the information we provide to patients who are considering treatment at BIANCA CLINIC.

What kind of treatment is peptide therapy?

Peptide therapy is a medical treatment that uses different formulations tailored to specific goals, with the aim of supporting the maintenance and improvement of physical health and bodily functions.

Peptides are molecules that transmit information within the body.

Peptides are small molecules formed by the linking of several amino acids. Many of them, such as hormones and neurotransmitters, play a role in transmitting information within the body.

A common misconception here is the idea that this treatment “replenishes all the peptides lost due to aging.” In reality, that is not the case. The basic concept behind the treatment is to select, from among the many peptides available, drugs or compounds that target specific receptors or functions, tailored to the individual’s specific goals.

Depending on the medication, both the purpose and the method of administration are completely different.

Our clinic’s peptide therapy (longevity medicine) involves administration via oral intake, nasal spray, and subcutaneous injection. Even though they are all called “peptide therapy,” the intended effects vary greatly depending on the specific medication chosen. Some target concentration, others address sexual function, and still others aid in tissue repair—please consider each one as a distinct treatment.

To be honest, I don’t recommend choosing a medication based solely on the word “peptide.” The strength of the evidence and the level of risk vary from one medication to another. My honest advice is that you should listen to an explanation of the intended purpose and risks before focusing on the name.

The characteristics and administration methods for each formulation are as follows:Treatments PageBut we go into more detail here.

At Bianca Clinic, we make gradual adjustments while monitoring your progress.

In addition to a medical interview and physical examination, we perform blood tests and saliva tests as needed, and begin by assessing your current physical condition, lifestyle habits, and “what you’d like to improve.” Based on this, we develop a treatment plan and continue to monitor your progress after treatment begins, adjusting the dosage and treatment approach as necessary.

Based on the results of the examination, if we determine that an option other than peptide therapy is more suitable for you, we may suggest alternative options. We view the counseling session not as a process that automatically leads to treatment, but as an opportunity to work together to assess your current physical condition and clarify your goals.

What kind of results can be expected from peptide therapy?

The expected effects of peptide therapy vary depending on the formulation, with the primary treatment goals including vitality, cognitive function, sexual function, body composition, and recovery.

Supports vitality and overall daily well-being
Approaches to Cognitive Functions Such as Concentration and Memory
Addressing Sexual Function Concerns, Such as Low Libido
Support for body composition, including muscle mass and fat metabolism
Tissue repair and support for post-treatment recovery

Approaches to Daily Well-Being, Cognitive Function, and Sexual Function

There are medications you may want to consider for symptoms such as fatigue, low energy, and problems with concentration or memory. There are also medications available to treat a decreased sex drive.

However, I’d like to be careful here. It’s not something we can simply claim with certainty, such as “Using this will relieve fatigue” or “It will improve your memory.”

Whether it’s fatigue or forgetfulness, there are often several underlying factors at play, such as lack of sleep, nutritional status, hormonal balance, medications you’re taking, and hidden underlying conditions. Before choosing a medication, it’s actually more important to work together to identify the cause than the treatment itself.

To support body composition and tissue repair

There are also medications being evaluated for purposes such as maintaining muscle mass, promoting fat metabolism, alleviating joint and muscle discomfort, and aiding post-surgical recovery. However, it is also true that some of these medications have only been studied in limited human trials, or lack sufficient long-term safety data.

Peptide therapy is not a treatment that immediately resolves a wide range of health concerns. It is important to assess, on a case-by-case basis for each medication, whether the intended effect is necessary for the individual and whether the expected benefits outweigh the risks.

Look not just at appearances, but at the physical changes themselves

Treatment at a cosmetic medicine clinic involves monitoring not only your physical appearance but also your overall health, lab results, sleep patterns, and exercise habits. If you do not notice any effects or experience unwanted side effects, options may include adjusting the dosage, temporarily stopping the medication, or switching to a different treatment.

We believe that aesthetic medicine for health involves a combination of lifestyle adjustments and medical follow-up—that is our approach to aesthetic medicine for health.

What are the advantages and disadvantages of peptide therapy?

While there is flexibility in choosing medications based on specific needs, there are also points to be mindful of regarding side effects and evidence.

Benefits

You can choose a medication based on your concerns or goals
You can choose from multiple administration methods, such as oral, nasal spray, and injection.
The content can be adjusted based on the results of medical examinations and tests.
You can decide whether to continue or make changes based on how things progress.

The hallmark of peptide therapy is not that “one drug solves everything,” but rather that treatment can be tailored to specific goals. A major advantage is the ability to select medications after assessing a patient’s health status and lifestyle, and to make fine adjustments based on their progress.

Another key feature is that there are treatment options—such as oral medications and nasal sprays—that can be used at home, not just during clinic visits. However, please avoid increasing or decreasing the frequency or dosage on your own. Increasing the dosage in an attempt to see results more quickly does not necessarily lead to better outcomes.

Disadvantages and Precautions

Results and the time required may vary from person to person.
Side effects and contraindications vary by medication.
Some of these lack sufficient human studies or long-term safety data.
Regular checkups and follow-up monitoring will be necessary.

Reported side effects include headaches, dizziness, fatigue, nausea, facial flushing, swelling, dry mouth, difficulty falling asleep, acne, joint discomfort, and hair loss. Which symptoms are most likely to occur depends on the medication used.

Just because a substance has a structure similar to one naturally found in the body does not mean it has no side effects. If you have any pre-existing medical conditions, are taking other medications, are pregnant, or are planning to become pregnant, be sure to inform your doctor before starting treatment.

Since some medications are classified as prohibited substances under anti-doping regulations, we ask that athletes consult with us in advance.

Frequently Asked Questions

Since the specifics of treatment and the frequency of visits will vary depending on the medication used, the treatment goals, and your current health condition, we will provide you with the final details during your consultation.

前田先生カウンセリング風景

Q. What exactly is peptide therapy?

A. This is a medical treatment that involves the use of peptide preparations and other medications tailored to the specific purpose, administered orally, intranasally, or by injection. Since the effects and risks vary depending on the medication, the treatment plan is determined based on the results of medical examinations and tests.

Q. How does peptide therapy differ from other forms of regenerative medicine?

A. Peptide therapy is a treatment that primarily involves the administration of drugs or compounds. It falls into a different category from regenerative medicine, which uses cell-derived products and other materials, as the substances used and the objectives of the two approaches are distinct.

Q. Could you tell me the estimated treatment duration and frequency of visits?

A. It is often said that it takes about 3 to 6 months to start noticing changes, but this can vary depending on the medication and the treatment goal. The frequency of follow-up visits is not fixed; it is determined based on your physical condition and test results.

Q. Can I get this treatment for cosmetic purposes?

A. It is sometimes considered as part of anti-aging care. However, since it differs in nature from treatments that directly target the skin or appearance, its suitability is determined based on an “internal approach” that includes overall health management.

Q. Can I receive this treatment to boost my immune system?

A. To be honest, it might be a bit of an overstatement to lump all these treatments together under the term “immunity-boosting treatments.” While there are medications currently being studied for their effects on immune function, the evidence and risks vary depending on the specific drug, so I will determine their appropriateness during your consultation.

Take the first step toward healing from the inside out. Consult with your doctor when choosing a peptide therapy.

"Peptide therapy" is not a term that refers to a single specific medication; rather, it is a general term for medical treatments that involve the use of various formulations with different purposes under a doctor's supervision.

Vitality, cognitive function, sexual function, body composition, and recovery—while it’s appealing to be able to choose a medication tailored to each specific goal, the effects, side effects, and strength of the evidence vary from one medication to another.

I think the most important thing is to work with your doctor to assess your current health and determine whether that treatment is truly necessary.

At BIANCA CLINIC, we work with you to determine the treatment method that best suits your needs through consultations, examinations, and follow-up care. If you are interested in peptide therapy, please start by scheduling a consultation to discuss your concerns and treatment goals.

▶Peptide Therapy (Longevity Medicine) Treatment Page
▶Counseling Appointment Page