1 The vast majority of people will never have an anaphylactic reaction. 2  The most common causes of anaphylaxis include drugs, such as penicillin, insect stings, foods (peanuts, shellfish), X-ray dye, and latex. 3  The symptoms of anaphylaxis may vary and can include hives, tongue swelling, vomiting, and even shock.
The recommended starting dose for prolonged-release venlafaxine is 75 mg given once daily. Patients not responding to the initial 75 mg/day dose may benefit from dose increases up to a maximum dose of 375 mg/day. Dosage increases can be made at intervals of 2 weeks or more.
1 If there is no response within 2 weeks of reaching 150 mg/day the dose is again increased in steps of 25 mg/dose until a total daily dose of 300 mg/day is achieved. 2  If this dose is not effective, and the patient is tolerating the venlafaxine without problems, I then increase the dose to between 500 and 600 mg/day. What does venlafaxine cost? 2  Venlafaxine is supplied in tablets ranging from 25 to 100 mg in strength. 3  The 25 mg tablets cost pharmacies nearly as much as the 100 mg tablets ($0.71 vs. $0.83). 4  It is expected that all strengths of venlafaxine will be sold for between $1.00 and $1.50 per tablet.