I assume you mean creatine makes you gain water weight, because beta alanine is not associated with weight gain.
Additionally, many mention the tingling sensation with BA intake, that can be mitigated by splitting the dose. I take 1 pill in the morning and night along with powdered BA in my recovery shake (about 6.5 total daily). I get minor tingling, which is normal, that goes away within 30 minutes. Also, Thorn’s slow release is said to minimize tingling but is also expensive.