Zaram-zaram brain

Crude drugs are unrefined, raw materials of plant, animal, or mineral origin used in traditional medicine, folk remedies, or as starting materials for pharmaceutical production. They can be:

1. _Plant-based_: Herbs, roots, leaves, bark, seeds, or flowers, such as:
- O***m poppy (Papaver somniferum)
- Foxglove (Digitalis purpurea)
- Willow bark (Salix alba)
2. _Animal-based_: Derived from animals, such as:
- Hides (e.g., snake skin)
- Bones (e.g., shark cartilage)
- Organs (e.g., liver, gallbladder)
3. _Mineral-based_: Derived from minerals, such as:
- Sulfur
- Mercury
- Arsenic

Crude drugs are often:

1. _Unprocessed_: Not purified or refined
2. _Complex mixtures_: Contain multiple compounds, including active and inactive ingredients
3. _Variable composition_: Can vary depending on source, quality, and processing

Crude drugs are used in various forms, such as:

1. _Infusions_
2. _Decoctions_
3. _Tinctures_
4. _Powders_
5. _Extracts_

They are used in traditional medicine, homeopathy, and as raw materials for pharmaceutical production. However, their use can be associated with risks, such as contamination, adulteration, and unpredictable efficacy.

EVALUATION OF A DRUG

ensures the identity of a drug and determines the quality and purity of drugs. The main reasons behind the need for evaluation of crude drugs are biochemical variation in the drug, effect of treatment and storage of drugs, and the adulterations and substitutions.
Improvements in analytical methods have definitely led to improvements in harvesting schedules, cultivation techniques, storage, activity, stability of active compounds, and product purity. All of these gains have resulted in tre-mendous improvements in the quality of herbal prepara-tions now available.
Methods currently employed in evaluating herbs are organoleptic, microscopic, physical, chemical, and biological parameters





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