Premier Protein shakes are generally safe during pregnancy, and protein shakes are even listed by the American College of Obstetricians and Gynecologists as a recommended protein source for managing morning sickness. That said, there are a few ingredients worth understanding before you make these shakes a daily habit, including the form of vitamin A, the artificial sweeteners, and the caffeine in coffee-flavored varieties.
Protein Needs Rise Significantly During Pregnancy
During the first trimester, your protein needs barely change from your pre-pregnancy baseline. The recommended daily allowance sits at about 46 grams per day. But by the second and third trimesters, that number jumps to roughly 71 grams per day, an increase of about 21 grams daily. That’s a meaningful bump, and it’s one reason many pregnant women reach for protein shakes to fill the gap.
A single Premier Protein shake delivers 30 grams of protein, which covers a large chunk of that daily target. For women dealing with nausea or food aversions, a shake can be far easier to keep down than a full meal. ACOG specifically names protein powders and shakes alongside dairy, nuts, and seeds as good protein sources during pregnancy.
The Vitamin A Issue Worth Knowing About
This is the most important detail to pay attention to. Each Premier Protein shake contains 230 micrograms of vitamin A in the form of vitamin A palmitate. That’s a preformed version of vitamin A (retinol), not the plant-based beta-carotene your body converts on its own. The distinction matters because excessive preformed vitamin A during pregnancy is linked to birth defects.
The upper limit for preformed vitamin A during pregnancy is 3,000 micrograms per day. At 230 micrograms, one shake sits well below that ceiling. But preformed vitamin A also comes from your prenatal vitamin (most contain 750 to 900 micrograms), fortified foods like cereal and milk, and animal sources like liver. If you’re drinking multiple shakes a day on top of a prenatal vitamin and fortified foods, the numbers can add up. One shake per day alongside a standard prenatal vitamin keeps you comfortably within safe range.
Artificial Sweeteners: Sucralose and Acesulfame Potassium
Premier Protein shakes are sweetened with both sucralose and acesulfame potassium (Ace-K) instead of sugar. Neither sweetener has been shown to cause malformations or adverse fetal effects in the available research. Animal studies using high doses of sucralose during pregnancy found no increased risk of birth defects. Health Canada’s position is that sugar substitutes during pregnancy do not pose a health risk when used in moderation.
One nuance: acesulfame potassium does cross the placenta, meaning it reaches the developing baby. Research on what that means long-term is still limited. The acceptable daily intake for Ace-K is 15 milligrams per kilogram of body weight, and for sucralose it’s 9 milligrams per kilogram. A single protein shake contains far less than those thresholds. If you’re also drinking diet sodas or using other sugar-free products throughout the day, it’s worth keeping a rough mental tally, but one or two shakes a day is unlikely to approach the limits.
Watch the Caffeine in Coffee Flavors
The Café Latte flavor contains 95 milligrams of caffeine per shake. That’s roughly equivalent to a standard cup of brewed coffee. Most guidelines recommend staying under 200 milligrams of caffeine per day during pregnancy. So a single Café Latte shake is fine on its own, but it eats up nearly half your daily caffeine budget. If you’re also drinking coffee, tea, or chocolate throughout the day, you could easily overshoot.
The non-coffee flavors like chocolate, vanilla, and strawberry contain no meaningful caffeine. If you want to avoid the mental math, stick with those.
Heavy Metals and Contaminant Testing
Protein supplements aren’t regulated as strictly as food or drugs, which has raised concerns about heavy metal contamination. Consumer Reports tested Premier Protein as part of a broader investigation into protein products and found low levels of lead. That result placed it among the better-performing products in the category. No elevated levels of cadmium or arsenic were specifically flagged for Premier Protein.
“Low levels” is reassuring but not zero. Rotating your protein sources rather than relying exclusively on any single supplement is a simple way to minimize cumulative exposure to any one contaminant. Whole food protein sources like eggs, Greek yogurt, chicken, and legumes don’t carry the same contamination concerns.
How Many Shakes Per Day Are Reasonable
One shake per day is a straightforward choice that keeps you well within safe limits for vitamin A, artificial sweeteners, and any trace contaminants. Two shakes per day is likely fine for most women but starts to stack up the preformed vitamin A (460 micrograms from shakes alone, plus your prenatal). Beyond two, you’re displacing meals that would provide the fiber, iron, folate, and varied nutrients that pregnancy demands.
Protein shakes work best as a supplement to your diet, not a replacement for meals. They fill a real gap when nausea makes cooking impossible or when your appetite disappears in the first trimester. But they lack fiber entirely and provide a narrow range of micronutrients compared to whole foods. Think of them as a tool for the hard days, not a dietary foundation.