Side effects of the probiotic Align are generally mild and affect the digestive tract, causing gas or bloating, according to Procter & Gamble. Clinical studies show Align to have no more side effects than a placebo. For most people using the product, these side effects eventually subside.
Rare side effects of Align include infection and severe allergic reactions, notes WebMD. Signs of infection include a persistent cough, high fever and chills. The allergic reaction causes a rash, severe swelling, difficulty breathing and dizziness. With either of these severe side effects, the individual using Align is encouraged to contact his health care provider.
Procter & Gamble indicates Bifantis is the trademarked name for the probiotic Bifidobacterium infantis 35624. The manufacturer freeze-dries the beneficial bacteria and packages it so it is active for up to 24 months when it remains in the original package. It does not require refrigeration. The manufacturer markets this product for daily use to improve bacterial function in the digestive tract.
Because probiotic products often contain live bacteria, antibiotics interfere with their benefits, explains WebMD, which recommends waiting at least two hours after taking an antibiotic before taking Align. While these products help to prevent diarrhea from antibiotics, it is important to limit their use to no more than two days for this purpose due to a potentially serious illness, unless otherwise directed by a doctor.