One of its ingredients: amorphous aluminum hydroxyphosphate
From page 11 of the Merck Gardisil Package Insert (and remember, these are not merely things that “could happen.” They are things that “already happened.” Notice that on this list, there are no less than eight conditions that are potentially fatal):
6.2 Postmarketing Experience
The following adverse events have been spontaneously reported during post-approval use of GARDASIL. Because these events were reported voluntarily from a population of uncertain size, it is not possible to reliably estimate their frequency or to establish a causal relationship to vaccine exposure.
Blood and lymphatic system disorders: Autoimmune hemolytic anemia, idiopathic thrombocytopenic purpura, lymphadenopathy.
Respiratory, thoracic and mediastinal disorders: Pulmonary embolus.
Gastrointestinal disorders: Nausea, pancreatitis, vomiting.
General disorders and administration site conditions: Asthenia, chills, death, fatigue, malaise.
Immune system disorders: Autoimmune diseases, hypersensitivity reactions including anaphylactic/ anaphylactoid reactions, bronchospasm, and urticaria.
Musculoskeletal and connective tissue disorders: Arthralgia, myalgia.
Nervous system disorders: Acute disseminated encephalomyelitis, dizziness, Guillain-Barré
syndrome, headache, motor neuron disease, paralysis, seizures, syncope (including syncope associated with tonic-clonic movements and other seizure-like activity) sometimes resulting in falling with injury, transverse myelitis.
Infections and infestations: cellulitis.
Vascular disorders: Deep venous thrombosis.
Thank you, and as you said, those are ONLY the Adverse Reactions that have already happened.
This aggregation of studies says that an Average of 94% of Adverse Reactions never even Get reported.
http://www.ncbi.nlm.nih.gov/pubmed/16689555