Tadadel®Professional 20mg is a brand of Tadalafil 20 mg manufactured by Delta Enterprises. Tadadel®Professional 20 mg is approved by Indian Food and Drug Administration for the treatment of Erectile Dysfunction or Impotence. Tadadel®Professional 20 mg is approved by the Drug Controller General of India. Tadadel®Professional 20 mg is also approved by the Central Drugs Standard Control Organization which is the national regulatory body for Indian Pharmaceuticals. Tadadel®Professional 20 mg pills are oval shaped. Tadadel®Professional 20 mg pills are white colored. Tadadel ®Professional 20 mg tablets has a very delicious Vanilla flavor. Tadadel®Professional 20 mg tablets is available in an attractive packaging of a box of hundred tablets and pack of ten pills. Tadadel®Professional 20mg has a molecular formula of C22H19N3O4. Tadadel®Professional 20mg has a molecular weight of 389. 411 g/mol. Tadadel®Professional 20mg is a derivative of carboline and a PHOSPHODIESTERASE 5 INHIBITOR. Tadadel®Professional 20mg is a derivative of carboline with vasodilatory function. Tadadel®Professional20 mg is an annulated 2. 5-diketopiperazine. Tadadel®Professional20 mg is also a 1, 2, 3, 4-tetrahydro-β-carboline. Tadadel®Professional20 mg can also be synthesized from (D)-tryptophan methyl ester and Piperonal. This process is followed by condensations with methylamine and chloroacetyl chloride thereby completing the diketopiperazine ring. The dosage of Tadadel®Professional20 mg is thirty minutes to four hours before having sexual intercourse. Don't take Tadadel®Professional 20 mg with nitrates. Tadadel®Professional20 mg cannot be taken with alpha blockers. Tadadel®Professional20mg cannot be taken with antibiotics, antifungal formulations, Bosentan, Imatinib, St John's wort, Boceprevir, Carbamazepine, Fosphenytoin, Isoniazid, Cimetidine, blood pressure medications, HIV/AIDS medications, Grapefruit juice and high fat meal. Tadadel®Professional20 mg is very well tolerated with very less serious side effects. The side effects of Tadadel®Professional20 mg includes nasal congestion, headache, flushing, nausea, dyspepsia, diarrhea and visual disturbance. Stop taking Tadadel®Professional20 mg if there is a prolonged erection lasting more than 6 hours. Tadadel®Professional20 mg should be stored in a cool and dry place and away from Sunlight. Tadadel®Professional20 mg should be kept away from children's and pets.