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Insulin is protein soluble and would be unable to cross the wall of the gastrointestinal tract without being broken down and the hormones in birth control pills are lipid soluble are correct.
ice can be injected, smoked and orally taken
Rabbits can have pennicillin injected into them,but cannot have it orally,
Yes Ritalin when prescribed is always taken orally however when abused it can be smoked, snorted or injected.
thyroid hormones (T3 and T4)
No, the only approved dosage form of Vyvanse is to be taken orally.
No it is not a lipid. Insulin is made up of proteins. It cannot be injected orally.
Depending on the specific drug, a bronchodilator may be inhaled, injected, or taken orally
You don't give insulin orally ! Insulin needs to be injected into the patient's bloodstream. The acids in the stomach would break down the insulin - rendering it useless.
No, vaccines are not injected into the skin. Most vaccines are administered through injection into the muscle or subcutaneous tissue (under the skin). Some vaccines are also given orally or nasally.
vaccine
Different chemical classes of hormones are made from different substrates and are soluble in different solvents. Steroid hormones are synthesized from cholesterol and include: testosterone, aldosterone, cortisol, estradiol and progesterone. They are soluble in lipids (fat-soluble) and can therefore be administered orally. Other kinds of hormones, eg: tyrosine-based hormones and protein hormones, are made from different substances (eg: amino acids) and may be water soluble and therefore cannot be administered orally.