Classification of Multivitamin Preparations
The pharmacological properties and indications of multivitamins depend on their composition and the number of components. Several main groups are distinguished:
- Low-component: Include from two to four vitamins. Prescribed for specific pathologies, such as Ascorutin to strengthen the vascular wall or Aevit as an antioxidant.
- Multicomponent balanced complexes: Contain 10–12 vitamins (Undevit, Decamevit). They are recommended for polyhypovitaminosis and extreme physical or psycho-emotional stress.
- Vitamin-mineral complexes: Combine vitamins with macro- and microelements (Complivit, Vitrum).
- Pediatric dosage forms: Available as syrups, drops, or effervescent tablets tailored to the child's age and preventive needs.
Characteristics and Organotropy of Cytamins
Cytamins are natural biologically active substances derived from animal organs and tissues. They act as cellular bioregulators, correcting metabolism directly within damaged tissues.
Currently, there are 17 cytamins exhibiting pronounced organotropy:
- Nervous and cardiovascular systems: Cerebramin for the brain, Vasalamin for blood vessels, and Coramin for the heart.
- Digestion and respiration: Hepatamin (liver), Pancramin (pancreas), Ventramin (stomach), and Bronchalamin (lungs).
- Reproductive and endocrine systems: Ovariamin, Testalamin, Thyramin (thyroid gland), and Suprenamin (adrenal glands).
- Other systems: Thymusamin for immunity, Chondramin for the musculoskeletal system, and Renisamin for the kidneys.
Composition and Clinical Interactions
In addition to proteins and lipids, cytamins contain B-group vitamins, fat-soluble vitamins A and E, and a wide range of macro- and microelements. An important metabolic feature is the virtually complete absence of carbohydrates, making these agents valuable for patients with obesity and diabetes mellitus.
Clinically significant pharmacological interactions include:
- Combination of the antituberculosis drug Cycloserine with pyridoxine (vitamin B₆) to reduce neurotoxicity.
- Risk of fat-soluble vitamin deficiency (including vitamin K) when taking bile acid sequestrants such as Cholestyramine.
- Increased bioavailability of iron when combining trivalent iron preparations with ascorbic acid.