Synedica 40mg Biotin Injectable Pen Kit – Hair, Skin & Metabolic Support
What is the Synedica 40mg Biotin Injectable Pen Kit?
The Synedica 40mg Biotin Injectable Pen Kit is a complete solution for biotin supplementation via subcutaneous injection. Unlike conventional oral forms, the injectable route delivers the nutrient directly into the bloodstream, bypassing the intestinal absorption process.
Each kit includes:
- 1 pre-filled injector pen with 40mg of biotin
- 12 sterile disposable needles
- Instruction manual with step-by-step usage protocol.
Discover our entire line of Synedica injectable supplements, developed with a focus on practicality and efficiency.
What is biotin and what is its role in the body?
Biotin, also called vitamin B7 or vitamin H, is a water-soluble B-complex vitamin essential for several metabolic functions. It helps convert carbohydrates, fats, and proteins from food into usable energy for the body. ( Office of Dietary Supplements)
Biotin is an important cofactor for the formation of keratin, a protein that gives strength and resistance to the skin, hair, and nails. Sanavita
Furthermore, vitamin B7 plays an important role in the normal functioning of the nervous system, supporting communication between nerve cells and the overall balance of the body. Sara
Scientific sources:
Who can benefit from biotin supplementation?
Biotin deficiency, while not common, can occur and is associated with specific symptoms. Biotin deficiency can cause thinning and hair loss, skin rashes around the eyes, nose, and mouth, as well as conjunctivitis. ( Office of Dietary Supplements)
Biotin supplementation is primarily effective in cases of proven deficiency. In people with normal biotin levels, evidence regarding accelerated hair growth is still limited.Synedica 40mg Biotin Injectable Pen Kit
Supplementation can be especially relevant for:
- People with reduced dietary intake of biotin
- Individuals with impaired intestinal absorption
- Who presents symptoms associated with low vitamin B7 levels?
- People seeking metabolic support in addition to their diet.
Are you unsure if this product is right for you? Talk to our team or consult a healthcare professional.
How does subcutaneous absorption work?
Subcutaneous administration involves applying the supplement to the layer of fat just below the skin. This method is widely used in clinical protocols precisely because it allows for gradual and consistent absorption, without depending on digestion.
In the case of biotin, vitamin B7 acts as a coenzyme in various metabolic reactions, helping the body to break down and utilize fats, carbohydrates, and proteins efficiently. Direct delivery via injection may be advantageous for people with reduced intestinal absorption. Sara
See our complete guide on how to safely administer subcutaneous injections at home .
Dosage and recommended usage protocol
The pen contains 40mg of biotin with adjustable increments, allowing the dose to be tailored to individual needs.
Available doses per application:
| Option | Description |
|---|---|
| 2.5 mg | Initial adaptation dose |
| 5 mg | Standard protocol — weeks 1 to 4 |
| 7.5 mg | Progression — weeks 5 to 8 |
| 10 mg | Maximum dose — starting in week 8 |
Suggested protocol:
| Period | Weekly Dose |
|---|---|
| Weeks 1–4 | 5mg per week |
| Weeks 5–8 | 7.5mg per week |
| 8+ weeks | 10mg per week (if needed) |
Application guidelines:
- Subcutaneous injection, once a week.
- Alternate between the following areas: abdomen, thigh, or upper arm.
- Maintain consistency for better results.
The above protocol is a suggested use. Always consult a doctor or nutritionist before starting any supplementation.
Results: what to expect and when
Results vary from person to person and depend on factors such as current nutritional status, lifestyle, and consistency of use. A typical reported schedule includes:
Weeks 1 to 4:
Metabolic adaptation and initial improvements in nail strength.
Weeks 4 to 8
: Reduction in nail fragility and progressive improvements in skin and hair texture.
Starting in week 8,
more consolidated results are seen in hair, skin, and metabolism for people who have consistently followed the protocol.
Consistency is the most important factor for sustained results.
Storage
- Store in a cool, dry place, protected from direct sunlight.
- Do not freeze.
- Use within the indicated time frame after opening.
- Keep out of reach of children.
Safety and contraindications
This product should not replace professional medical advice. Biotin is generally well tolerated, but it is essential to use it responsibly. Office of Dietary Supplements
Possible side effects (rare):
- Mild irritation at the injection site.
- Occasional allergic reactions
Do not use this product if:
- If you are allergic to any component of the formula.
- If you are pregnant or breastfeeding, do not use this product without medical advice.
- If you are using anticoagulants or other medications (biotin may interfere with laboratory tests).
This product is not a medicine. It does not diagnose, treat, cure, or prevent any disease. The information on this page is for educational purposes only and is not a substitute for medical evaluation. Always consult a qualified healthcare professional.
See our frequently asked questions or learn more about Synedica .
Frequently Asked Questions
Does injectable biotin work better than oral biotin?
The subcutaneous route bypasses the digestive system, which may be advantageous for people with compromised intestinal absorption. The difference in effectiveness varies according to each person’s profile and should be evaluated with a healthcare professional.
How many applications does each pen have?
Each pen contains 40mg in total. Using 10mg per week lasts 4 weeks. Using 5mg per week lasts 8 weeks.
Is it painful to inject?
The needles are thin, designed for subcutaneous injection. Most people report minimal discomfort. Consult our injection guide for tips on how to make the process more comfortable.
How long does it take to see results?
The first signs usually appear between the 4th and 8th week for those who follow the protocol regularly. More complete results usually appear after 8 weeks.
Do I need a prescription to buy it?
Biotin is a vitamin and does not require a prescription. However, we still recommend consulting a healthcare professional before starting any supplementation.
Can I combine it with other supplements?
Tell your doctor or pharmacist about all the supplements and medications you are taking before adding biotin to your routine, as it may interfere with some laboratory tests.
Scientific sources and references:






Kathleen Flores –
Easy to use, well packaged, and a smooth overall experience.
harry –
These guys were quick with their…
These guys were quick with their delivery and support. Got my order missed but they did fast with the replacement and gave a dc code. Very nice service
Ryan Rivera –
Good quality and simple to handle. The kit was delivered safely and met my expectations.
Mark James –
Excellent quality and easy to use. The kit arrived safely and was packaged very well.
linda B –
Great service and can confirm products are 💯 authentic. Customer service was great as well and replied promptly to my email with a query I had. Will definitely order from these guys again.
tom haley –
Easy to use, well packaged, and arrived quickly. Very happy with the quality.
Larry Ruiz –
Great experience with this kit. Easy to use, reliable packaging, and arrived in perfect condition.
harry –
These guys were quick with their delivery and support. Got my order missed but they did fast with the replacement and gave a dc code. Very nice service
Sarah Mitchell –
Good quality and easy to use. Arrived well packaged.