Do not use Trental if:

• you are allergic to any ingredient in Trental or to methylxanthines (e.g., theophylline, caffeine, theobromine);
• you have had recent bleeding in the brain or eye.

• Trental may cause dizziness or blurred vision. These effects may be worse if you take it with alcohol or certain medicines. Use Trental with caution. Do not drive or perform other possibly unsafe tasks until you know how you react to it.
• Tell your doctor or dentist that you take Trental before you receive any medical or dental care, emergency care, or surgery.
• It may take 2 to 4 weeks to notice improvement in your condition, and up to 8 weeks for maximum relief.
• Use Trental with caution in the elderly; they may be more sensitive to its effects.
• Pregnancy and breast-feeding: If you become pregnant, contact your doctor. You will need to discuss the benefits and risks of using Trental while you are pregnant. Trental is found in breast milk. Do not breast-feed while taking Trental.

Possible Side Effects: Check with your doctor if any of these most common side effects persist or become bothersome:

• belching; bloating; blurred vision; diarrhea; dizziness; flushing; gas; headache; indigestion; nausea; stomach discomfort.

• severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); chest pain; irregular heartbeat; vomiting.

Trental is to be used only by the patient for whom it is prescribed. Do not share it with other people.

If your symptoms do not improve or if they become worse, check with your doctor.