Vidalista Black 80 mg contains tadalafil, it can potentially cause sleep problems, although insomnia is not among the most common side effects. Insomnia has been reported with tadalafil, along with dizziness, vertigo, and sometimes sleepiness. D DailyMed +1 More importantly, 80 mg is Vidalista Black 80 mg higher than the usual tadalafil dose for erectile dysfunction (typically up to 20 mg as needed). Higher exposure can increase adverse effects. If you're having difficulty falling asleep, waking frequently, or unusual restlessness after taking it, avoid taking another dose until you've discussed it with a healthcare professional. If you tell me what time you take Vidalista Black 80 mg and when the sleep problem starts, I can help determine whether the timing is consistent with the medicine.