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Nitrates oxidize Hemoglobin iron (ferrous  ferric) and result
methmoglobin formation  cyanide bind to methmoglobin avidly
result release of cyanide from cytochrome oxidase

Methmoglobin carry less oxygen  treated with methlyene blue to
revert this effect.

+2
Ca Channel Blockers.

Do this from hypertension

Beta blockers.

Same as hypertension

Uses

 Prophylactic treatment of angina

 Prevent exercise induced angina

 In vasospastic angina

 Combination with nitrates

Other drugs.

Contents

Pharmacology Mnemonics and Short Notes By Muhammad Ramzan Ul Rehman