Clinoptilolite

Clinoptilolite is a naturally occurring mineral belonging to the zeolite family, characterized by a complex, microporous crystalline framework of aluminosilicate tetrahedra. It is not a biological target, such as a receptor or enzyme, but rather a therapeutic agent or medical device utilized for its physical and chemical properties (Pavelić et al., 2018). In medical and veterinary applications, it is primarily used as an adsorbent and ion exchanger within the gastrointestinal tract to trap toxins, heavy metals, and metabolic waste products like ammonia, preventing their systemic absorption (Mastinu et al., 2019). Because clinoptilolite is chemically inert and not absorbed into the bloodstream, its primary site of action is the intestinal lumen, where it helps maintain gut barrier integrity and reduces oxidative stress. Research indicates that it may provide supportive benefits in conditions involving systemic toxicity, chronic diarrhea, and hyperammonemia (Kraljević Pavelić et al., 2012). Despite its therapeutic use, it is classified as 'incorrect' in the context of being a molecular target because it functions as the active substance rather than the biological entity being targeted by a drug.

Other names

Zeolite clinoptiloliteHydrated sodium potassium calcium aluminum silicateHEU-type zeoliteNatural zeoliteClinoptilolite zeolite

Clinoptilolite acts as a molecular sieve and cation exchanger due to its negatively charged aluminosilicate framework. It selectively traps positively charged ions and molecules, such as ammonia (NH4+) and heavy metals (e.g., Pb2+, Cd2+), within its microporous channels while releasing exchangeable cations like calcium, magnesium, and potassium (Pavelić et al., 2018, doi: 10.3389/fphar.2018.01350). It also exhibits non-specific adsorption of organic toxins and may modulate the gut microbiota and intestinal integrity (Mastinu et al., 2019, doi: 10.3390/molecules24081517).