Take The Velvet Blog only as directed by a physician. Do not ingest TVB less than 12 hours before a meal, on a full stomach, or an empty stomach. May cause drowsiness; do not read TVB while operating heavy machinery. May cause nausea, dizziness, diarrhea, low blood pressure, or exploding-head syndrome. Anyone who is pregnant, may be pregnant, has been pregnant, or has a mother who has been pregnant should not take TVB. If an erection lasts four hours, call a physician and camera crew immediately.