์๋ฉํฐ๋
**์๋ฉํฐ๋(Cimetidine)**์ ํ์คํ๋ฏผ(H2) ์์ฉ์ฒด ๊ธธํญ์ ๋ก, ํน๋ฐ์ฑ, ์๋ ์ฑ ๋๋ ์ฝ๋ฌผ ์ ๋ฐ์ฑ ๋ฏธ๋์ฑ ์์ผ, ์ ๋ฐ ์ญ์ด์ง์ฅ ๊ถค์, ์๋์ผ, ๊ทธ๋ฆฌ๊ณ ๊ฐ์คํธ๋ฆฐ์ข , ๋น๋ง์ธํฌ์ข ๋๋ ๋จ์ฅ ์ฆํ๊ตฐ์ ์๋ฐํ๋ ์์ฐ ๊ณผ๋ค๋ถ๋น ์ํ์ ๊ด๋ฆฌ์ ์ฌ์ฉ๋ฉ๋๋ค. > **์์ ๊ฒฝ๊ณ :** NSAID ์ ๋ฐ์ฑ ๊ถค์์ ๋ํ ํจ๋ฅ์ ๋ ผ๋์ ์ฌ์ง๊ฐ ์์ต๋๋ค. ์ต์ H2 ์ฐจ๋จ์ (์: ํ๋ชจํฐ๋) ๋ฐ ์์ฑ์ ํํ ์ต์ ์ (์: ์ค๋ฉํ๋ผ์กธ)์ ๋นํด ์์ฐ ๊ฐ์ ํจ๊ณผ๊ฐ ๋จ์ด์ง๋๋ค. ์์ฅ๊ด ์ด๋ ์ด์ง ํจ๊ณผ๋ ๋ฏธ๋ฏธํ๋ฉฐ ํญ๊ตฌํ ์ ๋ ์๋๋๋ค.
์์ฉ ๊ธฐ์ : Acts as a **Histamine (H2) receptor antagonist** โ competitively inhibits histamine at H2 receptors of the gastric parietal cells โ reduces histamine-induced gastric acid secretion. It also binds to microsomal **cytochrome P450** enzymes, retarding oxidative hepatic drug metabolism. It has weak anti-androgenic effects.
๋๋ฌผ ์ข ๋ณ ์ฉ๋
- All uses (gastritis, ulcers, oesophagitis, hypersecretory conditions) ยท 2.5-5 mg/kg ยท PO/IV/IM ยท q12h ยท Taper upon cessation ยท Administer IV over 30 minutes. Reduce dose in renal impairment.
- All uses (gastritis, ulcers, oesophagitis, hypersecretory conditions) ยท 5 mg/kg ยท PO/IV/IM ยท q8h ยท Taper upon cessation ยท Administer IV over 30 minutes. Reduce dose in renal impairment.
์ฉ๋์ ๋ฉดํ ์์ ์ ๋ฌธ๊ฐ๋ฅผ ์ํ ์์ ์ฐธ๊ณ ์๋ฃ์ ๋๋ค. ํญ์ ์ต์ ๋ผ๋ฒจ๊ณผ ๊ฐ๋ณ ํ์์ ๋ํด ํ์ธํ์ญ์์ค.
ํฌ์ฌ ๊ฒฝ๋ก
๊ธ๊ธฐ
- No specific contraindications available, but use with caution in patients with known hypersensitivity.
์ด์๋ฐ์
- Thrombocytopenia (reported in dogs)
- Transient and self-resolving slight swelling of mammary glands (female dogs)
- Hepatotoxicity (rare, reported in humans)
- Nephrotoxicity (rare, reported in humans)
- Headache (humans)
- Decreased libido (humans)
์ฝ๋ฌผ ์ํธ์์ฉ
- Propranolol ยท Increases plasma levels of beta-blockers due to CYP450 inhibition ยท moderate
- Verapamil ยท Increases plasma levels of calcium-channel blockers ยท moderate
- Diazepam ยท Increases plasma levels of diazepam ยท moderate
- Lidocaine ยท Increases plasma levels of lidocaine ยท major
- Metronidazole ยท Increases plasma levels of metronidazole ยท moderate
- Pethidine ยท Increases plasma levels of pethidine ยท moderate
- Theophylline ยท Increases plasma levels of theophylline ยท major
- Myelosuppressive agents ยท May exacerbate leucopenia ยท moderate
- Sucralfate ยท May decrease cimetidine bioavailability; administer sucralfate at least 2 hours before ยท minor
- Antacids ยท May decrease absorption; stagger oral doses by 2 hours ยท minor
- Digoxin ยท Altered absorption/metabolism; stagger oral doses by 2 hours ยท moderate
- Itraconazole ยท Decreased absorption of itraconazole due to reduced gastric acidity; stagger oral doses by 2 hours ยท moderate
- Maropitant ยท Potential interaction; stagger oral doses by 2 hours ยท minor
๋ชจ๋ํฐ๋ง
- Clinical signs of GI ulceration or bleeding
- Renal function (to guide dose reduction if impaired)
- Heart rate and blood pressure (if administering IV)
- Complete blood count (monitor for thrombocytopenia or leucopenia, especially if on concurrent myelosuppressive drugs)
๊ณผ์ฉ๋
Adverse reactions are generally minor even at high doses. Supportive care should be provided if massive overdose occurs.
VetSheet ์ฝ๋ฌผ ๋ ํผ๋ฐ์ค๋ ๋ฉดํ ์์ ์ ๋ฌธ๊ฐ๋ฅผ ์ํ ์์ ์์ฌ๊ฒฐ์ ๋ณด์กฐ ๋๊ตฌ์ด๋ฉฐ, ์ ๋ฌธ์ ํ๋จ์ด๋ ์ ์กฐ์ฌ์ ์ต์ ๋ผ๋ฒจ์ ๋์ ํ์ง ์์ต๋๋ค.