What are the most common adverse reactions of Viagra?

1. Systemic reactions: facial edema, photosensitive reaction, shock, fatigue, pain, chills, accidental fall, abdominal pain, allergic reaction, chest pain and accidental injury.

2. Cardiovascular system: angina pectoris, atrioventricular block, migraine, syncope, tachycardia, palpitation, hypotension, postural hypotension, myocardial ischemia, cerebral thrombosis, cardiac arrest, heart failure, abnormal electrocardiogram and cardiomyopathy.

3. Digestive system: vomiting, glossitis, colitis, dysphagia, gastritis, gastroenteritis, esophagitis, stomatitis, dry mouth, abnormal liver function, rectal bleeding, gingivitis.

4. Blood and lymphatic system: anemia and leukopenia.

5. Metabolism and nutrition: thirst, edema, gout, unstable diabetes, hyperglycemia, peripheral edema, hyperuricemia, hypoglycemia and hypernatremia.

6. Musculoskeletal system: arthritis, arthropathy, myalgia, tendon rupture, tenosynovitis, osteodynia, myasthenia and synovitis.

7. Nervous system: * * ataxia, hypertonia, neuralgia, neuropathy, paresthesia, tremor, dizziness, depression, insomnia, lethargy, abnormal dreams, decreased reflexes and insensitivity.

8. Respiratory system: asthma, dyspnea, laryngitis, pharyngitis, sinusitis, bronchitis, excessive phlegm and cough.

9. Skin and its accessories: urticaria, herpes simplex, itching, sweating, skin ulcer, contact dermatitis and exfoliative dermatitis.

10. Special feelings: dilated pupils, conjunctivitis, photophobia, tinnitus, eye pain, deafness, earache, eye bleeding, cataract and dry eyes.

1 1. Urogenital system: cystitis, nocturia, frequent urination, mammary gland enlargement, urinary incontinence, abnormal ejaculation, genital edema and lack of orgasm.