Is there a way to help long term affects from lsd?

Flashbacks?: It depends on what long-term effects you're referring to. "flashbacks" (momentary psychotic experiences) generally fade over time, both in intensity and frequency. Lsd can precipitate more serious psychoses in susceptible individuals, which can require antipsychotic medication. Persistent mood changes are possible too. Best to avoid additional hallucinogens in all these cases.