Vaccine Ingredients

I used to think that vaccines were just a simple saline solution with some virus particles or something. No medical professional had ever told me the specific ingredients in any of the vaccines I received. After my Gardasil injury, I started wondering what was in the HPV vaccine that had made me so sick. And then I discovered the ingredients in the other vaccines on the CDC schedule. I was baffled at what I learned and shocked that my pediatrician never thought to tell me about these ingredients and their risks. I think every person has the right to full informed consent before getting any vaccine, and that includes knowing and understanding exactly what is being injected into your body. Below you can find the CDC Vaccine Excipient list as well as numerous studies examining the risks of these substances. 

*A couple things to keep in mind as you read about vaccine ingredients:

  • Injection is a lot different than ingestion. Vaccines are injected into muscle tissue, where they form a slow-release reservoir intended to stimulate the production of antibodies for some time. The ingredients are not simply flushed out like they might be if taken in as food, and some ingredients can make their way to the brain and accumulate over time. 

  • The CDC childhood vaccination schedule has never been tested for synergistic toxicity. In other words, the safety of the CDC’s childhood vaccination schedule was never affirmed because health authorities have no scientific data from synergistic toxicity studies on all combinations of vaccines that children are likely to receive.



Aluminum is put into vaccines as an adjuvant so that there is a stronger immune (antibody) reaction. 

According to the FDA, the maximum amount of parenteral (given by injection) aluminum exposure is 25 mcg per day.

The aluminum content of the following vaccines per dose is:

Pneumococcus: 125 mcg

Hib: 225 mcg

Hepatitis A: 250 mcg

Hepatitis B: 250 mcg

HPV: 500 mcg per shot

DTaP: 625 mcg

Pediarix: 850 mcg

*A two-month-old infant may receive up to 1,225 micrograms of aluminum from the vaccines administered at a single well-baby visit and a cumulative 4,925 micrograms by 18 months of age. These are astronomical levels of aluminum!

Parenteral aluminum has been associated with autoimmune diseases, neurological damage, demyelinating disorders, and more as can be seen in the studies below. 


Aluminum in Childhood Vaccines Is Unsafe

Aluminum hydroxide injections lead to motor deficits and motor neuron degeneration

Aluminium Involvement in Neurotoxicity

An aluminium adjuvant in a vaccine is an acute exposure to aluminium

Contact allergy to aluminium induced by commonly used pediatric vaccines

Administration of aluminium to neonatal mice in vaccine-relevant amounts is associated with adverse long term neurological outcomes

Biopersistence and Brain Translocation of Aluminum Adjuvants of Vaccines

Aluminum in the central nervous system (CNS): toxicity in humans and animals, vaccine adjuvants, and autoimmunity

Aluminum vaccine adjuvants: are they safe?

Mechanisms of aluminum adjuvant toxicity and autoimmunity in pediatric populations

Macrophagic Myofaciitis a Vaccine (alum) Autoimmune-Related Disease

A role for the body burden of aluminium in vaccine-associated macrophagic myofasciitis and chronic fatigue syndrome


Macrophagic myofasciitis: characterization and pathophysiology

Clinical Features in Patients with Long-Lasting Macrophagic Myofasciitis

[Lessons from macrophagic myofasciitis: towards definition of a vaccine adjuvant-related syndrome]

Slow CCL2-dependent translocation of biopersistent particles from muscle to brain

Aluminum-induced entropy in biological systems: implications for neurological disease

Aluminum hydroxide injections lead to motor deficits and motor neuron degeneration

Aluminum adjuvant linked to Gulf War illness induces motor neuron death in mice

Long-term persistence of vaccine-derived aluminum hydroxide is associated with chronic cognitive dysfunction

Are there negative CNS impacts of aluminum adjuvants used in vaccines and immunotherapy?

Autoimmune/inflammatory syndrome induced by adjuvants (ASIA) 2013: Unveiling the pathogenic, clinical and diagnostic aspects

On vaccine's adjuvants and autoimmunity: Current evidence and future perspectives

Peptide cross-reactivity: the original sin of vaccines

Exposure to mercury and aluminum in early life: developmental vulnerability as a modifying factor in neurologic and immunologic effects

Autoimmune/autoinflammatory syndrome induced by adjuvants (ASIA syndrome) in commercial sheep

Self-Organized Criticality Theory of Autoimmunity

Predicting post-vaccination autoimmunity: who might be at risk?


Thimerosal is the preservative form of mercury. It is added to vaccines to prevent bacterial growth. While thimerosal was removed from most vaccines in 2004, it is still used in the vaccine development process and is then filtered out with only "trace amounts" remaining. 

2 ppb of mercury is the mandated limit in drinking water

200 ppb mercury in liquid waste renders it a toxic hazard

2,000 ppb mercury in flu vaccines is considered a "trace" amount

50,000 ppb mercury in multi dose flue vaccines is given to infants, pregnant women, and everyone else

A Dose-Response Relationship between Organic Mercury Exposure from Thimerosal-Containing Vaccines and Neurodevelopmental Disorders

Thimerosal-containing hepatitis B vaccination and the risk for diagnosed specific delays in development in the United States: a case-control study in the vaccine safety datalink

Neonatal exposure to Thimerosal from vaccines and child development in the first 3 years of life

An assessment of the impact of thimerosal on childhood neurodevelopmental disorders

Neurodevelopmental disorders after thimerosal-containing vaccines: a brief communication

Neurodevelopmental disorders following thimerosal-containing childhood immunizations: a follow-up analysis

Low-dose mercury exposure in early life: relevance of thimerosal to fetuses, newborns and infants

Thimerosal induces DNA breaks, caspase-3 activation, membrane damage, and cell death in cultured human neurons and fibroblasts

Integrating experimental (in vitro and in vivo) neurotoxicity studies of low-dose thimerosal relevant to vaccines

Effect of thimerosal, methylmercury, and mercuric chloride in Jurkat T Cell Line

Hepatitis B triple series vaccine and developmental disability in US children aged 1–9 years

The risk of neurodevelopmental disorders following Thimerosal-containing Hib vaccine in comparison to Thimerosal-free Hib vaccine administered from 1995 to 1999 in the United States

A two-phased population epidemiological study of the safety of thimerosal-containing vaccines: a follow-up analysis

Thimerosal exposure in infants and neurodevelopmental disorders: an assessment of computerized medical records in the Vaccine Safety Datalink

Neurodevelopment of Amazonian Infants: Antenatal and Postnatal Exposure to Methyl- and Ethylmercury

Commentary: A Link Between mercury exposure, Autism Spectrum Disorder, and other neurodevelopmental Disorders? Implications for thimerosal-containing Vaccines

Thimerosal: clinical, epidemiologic and biochemical studies

Thimerosal exposure & increasing trends of premature puberty in the vaccine safety datalink

Methodological issues and evidence of malfeasance in research purporting to show thimerosal in vaccines is safe

Polysorbate 80

Polysorbate 80 is a surfactant, which means it helps substances stay suspended in a solution so they can be evenly distributed. It is this same quality that enables substances to cross the blood-brain barrier. This means that every component of the vaccine has greater access to the brain if the vaccine contains polysorbate 80. 


The Blood-Brain Barrier: Bottleneck in Brain Drug Development

Specific role of polysorbate 80 coating on the targeting of nanoparticles to the brain

Polysorbate 80: a pharmacological study

Delayed effects of neonatal exposure to Tween 80 on female reproductive organs in rats

Polysorbate 80 in medical products and nonimmunologic anaphylactoid reactions

Polysorbate 80: A Risky Vaccine Ingredient


Formaldehyde is commonly used to embalm bodies as they await burial or cremation. It is added to vaccines as a preservative to prevent deterioration of the active ingredients in the vaccine. 

The International Agency for Research on Cancer classifies formaldehyde as a human carcinogen.

In 2011 the National Toxicology Program named formaldehyde as a known human carcinogen. 

It is estimated that up to 20% of the population is allergic to formaldehyde and any exposure is enough to trigger allergic symptoms. 

NJ Department of Health Hazardous Substance Fact Sheet: Formaldehyde 

Propylene Glycol

Fetal Cell Tissue


Fetal Bovine Serum

Monosodium Glutamate