Im on 5mg amlodipine b4 but my doc gives me 10mg amlodipine now.. why do i feel hot after starting 10mg of amlodpine and sometimes my bp goes 140/90..

Difficult to say: It's a vasodilator which might explain warmth sensation but should lower not raise BP. Talk to your doc

Side effect: It's not uncommon to get flushing with amlodipine. Generally, if this is the only symptom, it's not serious. If it doesn't improve and remains uncomfortable, your doctor may decide to reduce the dose again add or switch to something else. Call your doctor if near passing out; swelling in hands, ankles, or feet; palpitations. Call 911 if SOB, face/throat swelling, or chest pain.