Tag: Aluminum salts

For nearly a century, adjuvants have been a critical component of effective vaccines, with aluminum salts being safely used for over 90 years [1.7.2]. So, **what is the first adjuvant for human use?** The answer is **aluminum salts**, whose adjuvant effects were discovered in 1926 [1.3.5, 1.4.2].

For nearly a century, aluminum salts have been a cornerstone of vaccine development. This widespread use often prompts the question, **what is the most commonly used adjuvant?** The answer for human vaccines is, unequivocally, aluminum salts.

For nearly a century, aluminum salts have been the most frequently included adjuvant in human vaccines, with about one-third of currently licensed vaccines containing them. This longevity is a testament to its long-established safety record and efficacy in enhancing immune responses to various antigens. The widespread use of these compounds answers the question: **What is the most common adjuvant?** and highlights their foundational role in modern pharmacology.