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For Research Use Only. Not for Use in diagnostic procedures.

This product is solely intended for research purposes as a chemical compound. Its designation permits its use exclusively for in vitro testing and laboratory experimentation. All information regarding this product provided on our website is purely educational. By law, any form of bodily introduction of this product into humans or animals is strictly prohibited. It should only be handled by professionals who are licensed and qualified. This product is neither a drug, food, nor cosmetic, and must not be misrepresented, misused, or mislabeled as such.

Z's Total B Kit

 

Peptide Partners' B-complex proprietary blend. Formulated for researchers looking to analyze large combinations of vitamins and aminos.

 

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 Ingredient

CAS

Quantity (mg/mL)

B1 (Thiamine HCL)

67-03-8

100 mg/mL
B2 (Riboflavin-5-Phosphate)

130-40-5

2 mg/mL
B3 (Niacin) 

59-67-6

20 mg/mL
B3 (Nicotinamide)

98-92-0

80 mg/mL
B5 (Dexpanthenol)

81-13-0

250 mg/mL
B6 (Pyridoxine HCL)

58-56-0

50 mg/mL
B7 (Biotin)

58-85-5

10 mg/mL
B9 (L-methylfolate)

151533-22-1

15 mg/mL
B12 (Methylcobalamin)

13422-55-4

1 mg/mL

Note: also contains 2% Benzoic Acid, 2% Lidocaine 0.2%, and sterile water.

Independent analysis pending

Peptide Partners Manufacturer Id: DF05

Batch Id: ZB20250727

 

Z's Total B Overview

(For Educational Purposes Only)

Composition and Ingredients

B-complex shots contain a synergistic combination of eight essential B vitamins, each serving distinct but interconnected physiological functions. The following ingredients are typically included in therapeutic formulations:

B1 (Thiamine HCL, CAS: 67-03-8): Thiamine serves as a precursor to thiamine pyrophosphate (TPP), a critical coenzyme in energy metabolism and carbohydrate processing [1].

B2 (Riboflavin-5-Phosphate, CAS: 130-40-5): This bioactive form of riboflavin functions as a precursor for flavoproteins involved in redox reactions and cellular energy production [1].

B3 (Niacin, CAS: 59-67-6): Niacin acts as a precursor to nicotinamide adenine dinucleotide (NAD) and supports cardiovascular health and cholesterol metabolism [2].

B3 (Nicotinamide, CAS: 98-92-0): An alternative form of vitamin B3 that provides neuroprotective benefits and supports cellular energy production without the flushing effects of niacin [3].

B5 (Dexpanthenol, CAS: 81-13-0): This provitamin form of pantothenic acid serves as a precursor to coenzyme A, essential for fatty acid synthesis and energy metabolism [4].

B6 (Pyridoxine HCL, CAS: 58-56-0): Pyridoxine converts to pyridoxal 5'-phosphate, a coenzyme crucial for amino acid metabolism and neurotransmitter synthesis [5].

B7 (Biotin, CAS: 58-85-5): Biotin functions as a coenzyme in carboxylation reactions essential for fatty acid synthesis, gluconeogenesis, and gene regulation [6].

B9 (L-methylfolate, CAS: 151533-22-1): The bioactive form of folate that supports DNA synthesis, methylation reactions, and neurotransmitter production [7].

B12 (Methylcobalamin, CAS: 13422-55-4): The active form of vitamin B12 essential for DNA synthesis, red blood cell formation, and neurological function [8].

Mechanism of Action

B-complex vitamins function as essential coenzymes and cofactors in numerous metabolic pathways throughout the body. The mechanism of action involves several interconnected physiological processes:

Cellular Energy Production: B vitamins collectively support mitochondrial function and energy metabolism through the citric acid cycle and electron transport chain. Thiamine, riboflavin, niacin, and pantothenic acid are particularly crucial for converting carbohydrates, fats, and proteins into adenosine triphosphate (ATP) [1].

Neurological Support: Multiple B vitamins contribute to nervous system health through different mechanisms. Thiamine supports nerve conduction and prevents neurological complications such as Wernicke-Korsakoff syndrome. Pyridoxine facilitates neurotransmitter synthesis, while methylcobalamin and methylfolate support myelin synthesis and nerve regeneration [1].

Hematopoietic Function: Folate and vitamin B12 work synergistically in DNA synthesis and red blood cell formation. Deficiencies in these vitamins can lead to megaloblastic anemia and associated complications [1].

Methylation Reactions: L-methylfolate and methylcobalamin serve as methyl donors in critical biochemical reactions, including neurotransmitter synthesis, DNA methylation, and homocysteine metabolism [7,8].

Antioxidant Activity: Riboflavin contributes to glutathione recycling, while other B vitamins support cellular antioxidant systems that protect against oxidative stress [1].

Administration and Storage

B-complex injections can be administered through multiple parenteral routes, each offering distinct advantages and considerations:

Intramuscular (IM) Administration: This is the preferred route for B-complex injections, typically administered into the deltoid, vastus lateralis, or gluteal muscles. IM injection provides reliable absorption and sustained vitamin levels [9].

Subcutaneous (SubQ) Administration: SubQ injections are administered into the subcutaneous tissue and offer a less invasive alternative with slower absorption compared to IM administration [10].

Intravenous (IV) Administration: IV administration provides immediate bioavailability but requires careful dilution and slow injection to prevent adverse reactions [9].

Typical Frequency: Clinical protocols vary based on individual needs and deficiency severity. Common regimens include:

  • Initial loading phase: Weekly injections for 4 weeks

  • Maintenance phase: Bi-weekly injections for 4 weeks, followed by monthly maintenance injections [11]

  • Alternative protocols may involve daily injections for 7-10 days, followed by weekly then monthly administration [12]

Storage Requirements: Proper storage is essential for maintaining vitamin stability and potency:

  • Refrigeration at 2°- 8°C (36°- 46°F) is required

  • Protection from light exposure is necessary

  • Freezing must be avoided to prevent phase separation

  • Darkening of the solution due to riboflavin content does not affect safety or efficacy [9]

Potential Benefits

B-complex shots may provide several health benefits for individuals with deficiencies or increased nutritional needs:

Increased Energy Levels: B vitamins play fundamental roles in cellular energy production, and supplementation may help combat fatigue and improve overall vitality [13].

Enhanced Cognitive Function: Adequate B vitamin levels support neurotransmitter synthesis and may improve memory, concentration, and mental clarity [1].

Improved Mood and Mental Health: B vitamins, particularly folate and B12, are involved in neurotransmitter production and may help alleviate symptoms of depression and anxiety [14].

Better Sleep Quality: Thiamine and other B vitamins support nervous system function and may help regulate sleep patterns [1].

Stronger Immune System: B vitamins support immune cell function and may enhance the body's ability to fight infections [5].

Healthier Skin, Hair, and Nails: Biotin and other B vitamins contribute to keratin production and cellular regeneration [6].

Cardiovascular Support: Niacin may help improve cholesterol profiles, while folate and B12 support healthy homocysteine levels [2,7,8].

Enhanced Athletic Performance: B vitamin supplementation may improve exercise endurance and recovery through optimized energy metabolism [15].

Neurological Protection: Methylcobalamin and other B vitamins may help prevent or slow the progression of certain neurological conditions [8].

Improved Digestive Health: B vitamins support digestive enzyme function and may help with nutrient absorption [1].

Conclusion

B-complex shots represent a valuable therapeutic intervention for individuals with vitamin B deficiencies or increased nutritional requirements. The synergistic combination of eight essential B vitamins provides comprehensive support for energy metabolism, neurological function, and overall health. When administered properly under medical supervision, these injections can offer significant benefits including increased energy, improved cognitive function, enhanced mood, and better overall well-being. The parenteral route of administration ensures optimal bioavailability and bypasses potential absorption issues in the gastrointestinal tract. However, proper storage, administration techniques, and frequency protocols are essential for maximizing therapeutic benefits while minimizing potential risks. Healthcare providers should carefully evaluate individual patient needs and monitor for both therapeutic response and potential adverse effects when implementing B-complex injection therapy.

Bibliography

[1] Hanna, M., Jaqua, E., Nguyen, V., & Clay, J. (2022). B Vitamins: Functions and Uses in Medicine. The Permanente Journal, 26(2), 89-97. https://pmc.ncbi.nlm.nih.gov/articles/PMC9662251/

[2] Mayo Clinic. (2025). Niacin. https://www.mayoclinic.org/drugs-supplements-niacin/art-20364984

[3] Health.com. (2023). What You Need to Know About Nicotinamide: Benefits and Uses. https://www.health.com/nicotinamide-benefits-7561633

[4] StatPearls. (2024). Vitamin B5 (Pantothenic Acid). https://www.ncbi.nlm.nih.gov/books/NBK563233/

[5] National Institutes of Health. (2023). Vitamin B6 - Health Professional Fact Sheet. https://ods.od.nih.gov/factsheets/VitaminB6-HealthProfessional/

[6] National Institutes of Health. (2022). Biotin - Health Professional Fact Sheet. https://ods.od.nih.gov/factsheets/Biotin-HealthProfessional/

[7] Xcode Life. (2025). L-Methylfolate: How To Use, Benefits, And Side Effects. https://www.xcode.life/mthfr-and-methylation/l-methylfolate/

[8] National Institutes of Health. (2025). Vitamin B12 - Health Professional Fact Sheet. https://ods.od.nih.gov/factsheets/VitaminB12-HealthProfessional/

[9] Drugs.com. (2024). Vitamin B Complex: Package Insert / Prescribing Information. https://www.drugs.com/pro/vitamin-b-complex.html

[10] Vibrant Vitality Clinic. (2023). Vitamin B12 Injection Sites: All You Need to Know. https://vibrantvitalityclinic.com/blog/b12-injection-sites/

[11] Ageless Aesthetics Medispa. (2024). Vitamin Injections Ashland KY. https://www.aamedispa.com/vitamin-injections.html

[12] Soza Clinic. (2024). How Often Can I Take B12 Injections? https://weightloss4texas.com/how-often-can-i-take-b12-injections/

[13] WebMD. (2024). Health Benefits of Vitamin B Complex. https://www.webmd.com/diet/health-benefits-b-complex

[14] St. Sophie's. (2023). The Benefits of L-Methylfolate for Treatment-Resistant Depression. https://st-sophies.com/blog/the-benefits-of-l-methylfolate-for-treatment-resistant-depression

[15] PMC. (2023). A functional evaluation of anti-fatigue and exercise performance improvement following vitamin B complex supplementation. https://pmc.ncbi.nlm.nih.gov/articles/PMC10542023/

Storage Instructions:

All of our manufacturing partners produce peptides using the Lyophilization (Freeze Drying) process, ensuring products maintain stability for shipping and storage for 6+ months. 

Once peptides have been received, it is imperative that they are kept cold and away from light. If the peptides will be used immediately, or in the next several days, weeks or months, short-term refrigeration under 4°C (39°F) is generally acceptable. Lyophilized peptides are usually stable at room temperatures for several weeks or more, so if they will be utilized within weeks or months such storage is typically adequate.

However, for longer-term storage (several months to years) it is more preferable to store peptides in a freezer at -80°C (-112°F). When storing peptides for months or even years, freezing is optimal in order to preserve the peptide's stability.

 

Third-party testing

Peptide Partners is committed to providing high-purity peptides at wholesale prices by frequently auditing its manufacturing partners using third-party laboratories. Independent analysis is vital to ensuring the quality and authenticity of your research peptides. Never trust a supplier that doesn't submit to third-party testing. Never trust a certification that cannot be independently verified. All of the certificates that we provide can be validated on the third-party laboratory's website. 

Each product description contains a Manufacturer ID corresponding to the producer of that product. The table below contains the most recent third-party analyses for all manufacturers and peptides listed on Peptide Partners. 

Current Purity certifications

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 Peptide Manufacturer Date Purity Laboratory
Sermorelin WF03 2025-08-27 99.84% BioRegen View File
Tesamorelin WF03 2025-08-22 99.10% TrustPointe View File
CJC-1295 ND WF03 2025-08-20 99.43% TrustPointe View File
Semaglutide EJ12 2025-08-20 99.34% TrustPointe View File
Ipamorelin WF03 2025-08-15 99.64% TrustPointe View File
GHK-Cu SH07 2025-08-09 99.73% BioRegen View File
Tirzepatide EJ12 2025-08-08 99.41% TrustPointe View File
NAD+ SH07 2025-07-31 99.76% BioRegen View File
VIP SH07 2025-07-31 99.42% BioRegen View File
Retatrutide SH07 2025-07-25 99.42% TrustPointe View File
BPC/TB500 SH07 2025-07-17 99.52% TrustPointe View File
TB500 (TB4) SH07 2025-07-17 99.68% TrustPointe View File
BPC-157 SH07 2025-07-17 99.92% TrustPointe View File
Cagrilinitide EJ12 2025-04-17 99.64% TrustPointe View File

Current Endotoxin Certifications

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 Peptide Manufacturer Date USP<85> Conformation Laboratory
Bacteriostatic Water SH07 2025-08-27 Conforms BioRegen View File
Tesamorelin WF03 2025-08-20 Conforms TrustPointe View File
CJC-1295 ND WF03 2025-08-20 Conforms TrustPointe View File
Sermorelin WF03 2025-08-20 Conforms TrustPointe View File
Semaglutide EJ12 2025-08-20 Conforms TrustPointe View File
Ipamorelin WF03 2025-08-11 Conforms TrustPointe View File
GHK-Cu SH07 2025-08-08 Conforms TrustPointe View File
Tirzepatide EJ12 2025-08-04 Conforms TrustPointe View File
NAD+ SH07 2025-07-29 Conforms TrustPointe View File
KPV SH07 2025-07-29 Conforms TrustPointe View File
VIP SH07 2025-07-29 Conforms TrustPointe View File
Retatrutide SH07 2025-07-24 Conforms TrustPointe View File
BPC/TB500 SH07 2025-07-17 Conforms TrustPointe View File
BPC-157 SH07 2025-07-17 Conforms TrustPointe View File
TB500 (TB4) SH07 2025-07-17 Conforms TrustPointe View File

Current Sterility Certifications

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 Product Manufacturer Date USP<71> Pass/Fail Laboratory
Meta-Z DF05 2025-08-26 Pass TrustPointe View File

Verifiable certificates

When obtaining research peptides, it is essential to validate the authenticity of the Certificate of Analysis (COA). Certificate fraud runs rampant throughout the research peptide supply community. The two most common forms are doctored images and stolen certificates. You can check for these two by making sure the third-party laboratory's website shows that the certificate belongs to the supplier and the values haven't been doctored. TrustPointe Analytics provides a few simple rules for verification:

When reviewing a COA, the first thing that should be done is to look for a way to verify that the COA is legitimate – either a link, key, or QR Code. That should take you to the laboratory’s website, not a third party website. If you follow the link and it does not take you to the laboratory’s website (URL), it is likely falsified. Finally, verify that the information on the COA provided matches the COA on the laboratory’s website. People who falsify COAs cannot access the laboratory’s website, so they are unable to alter the original COA.

Beware of fraudulent laboratories

Not only must one remain vigilant about potentially fraudulent certificates, one must also be aware that there are third-party laboratories whose results cannot be considered reliable or scientifically valid. Unfortunately, there is significant evidence to suggest that one of the most popular third-party testing labs does not use scientifically sound methodologies and, in some cases, has fabricated results. There isn't an easy remedy for this problem, but when labs are particularly bad, there tend to be a lot of discussion threads on various social platforms.

Interpreting Endotoxin Results (via TrustPointe)

Our friends at TrustPointe have provided the following detailed explanation to help interpret the results of the endotoxin testing.

We use the Charles River Endosafe PTS system to test for bacterial endotoxins following USP <85> guidelines:

  • USP <85> Bacterial Endotoxin Result: <x.xx EU/mL
    Because it’s reported as “<x.xx” this indicates the test did not detect endotoxin above the detection limit of the cartridge.
  • If a result is above the limit of detection of the cartridge, it will be reported as a number (without the "<").

The following are suitability parameters that verify the system was working properly and the sample prep dilution is appropriate for accurate results. Peptides often interfere with endotoxin detection due to their tendency to bind or mask endotoxins, which can lead to inaccurate low results. To overcome this, samples are typically tested at a large dilution to reduce matrix interference and ensure reliable recovery and detection in compliance with USP <85>.  If the dilution is not correct, the run will fail suitability and we'll need to adjust the dilution to ensure accurate results. We provide the suitability data to customers for transparency and so they can be confident in the results.

USP <85> Sample CV %:

  • CV stands for coefficient of variation, a measure of repeatability.
  • For our lab, CV has to be <25% or the result to be considered valid

USP <85> Spike CV %:

  • This refers to the precision of the positive control (spiked sample).
  • Again, for our lab CV has to be <25% or the result to be considered valid

USP <85> Spike Recovery

  • This tells us how much of the known endotoxin spike was recovered from your sample.
  • The acceptable range is 50–200% per USP <85>
NOT SUITABLE FOR HUMAN CONSUMPTION – INTENDED FOR RESEARCH ONLY

Thank you for choosing Peptide Partners.

NOTICE: All information provided above is strictly intended for educational and informational purposes. Our products are designed for research use solely and are not approved for human consumption. Please refrain from any form of ingestion.

By making a purchase from Peptide Partners, you acknowledge that you are acquiring Research Chemicals. Our products are exclusively intended for laboratory research purposes.

It is imperative that only qualified and licensed professionals handle this product. Under no circumstances should it be utilized as a drug, agricultural or pesticide product, food additive, or household chemical. Misrepresentation of this product for such purposes is strictly prohibited by law. All content on our website is provided for educational use exclusively. Any form of introduction into the human or animal body is illegal.

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